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Unable to access mail since Thunderbird 78.4.0 update - disabling Avast's (v20.8.2432) Mail Shield allows Thunderbird to access

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  • Last reply by kramster

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Last Saturday Thunderbird automatically updated to v78.4.0 and immediately I was unable to access emails from the servers (I have 3 accounts on different mail servers). Whenever I selected 'Get Messages' Thunderbird would indicate it was accessing a server but the process hung from there. There are no error messages, just no email. After troubleshooting I have found that disabling Avast's (v20.8.2432) Mail Shield allows Thunderbird to access and download emails normally so I am currently running with that shield disabled.I am running up to date Windows 10.

No I have tried running Thunderbird in safe mode without addons, I have tweaked tls.security.min from 3 to 1 via about:config and have completely uninstalled/reinstalled Avast and installed Thunderbird 78.4.1 over the top. Since then I have updated Thunderbird to 78.4.2. None of these have made any difference.

Can anyone shed light on this problem for me please. I have run the Thunderbird troubleshooter and the results are below:


 Application Basics
   Name: Thunderbird
   Version: 78.4.2
   Build ID: 20201108203418
   Distribution ID:
   Update Channel: release
   User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2
   OS: Windows_NT 10.0
   Launcher Process: Enabled
   Multiprocess Windows: 0/0
             Disabled
   Remote Processes: 0
   Enterprise Policies: Inactive
   Google Location Service Key: Missing
   Google Safebrowsing Key: Missing
   Mozilla Location Service Key: Missing
   Safe Mode: false
 Mail and News Accounts
   account1:
     INCOMING: account1, , (pop3) cp-qh03.syd02.ds.network:995, SSL, passwordCleartext
     OUTGOING: , cp-qh03.syd02.ds.network:465, SSL, passwordCleartext, true
   account2:
     INCOMING: account2, , (none) Local Folders, plain, passwordCleartext
   account3:
     INCOMING: account3, , (pop3) pop3.optusnet.com.au:110, alwaysSTARTTLS, passwordCleartext
     OUTGOING: , smtp.optusnet.com.au:25, alwaysSTARTTLS, passwordCleartext, true
   account5:
     INCOMING: account5, , (pop3) mail.tasmaritime.com.au:995, SSL, passwordCleartext
     OUTGOING: , mail.tasmaritime.com.au:465, SSL, passwordCleartext, true
 Crash Reports for the Last 3 Days
 Remote Processes
   Type: Count
 Extensions
     Name
     Version
     Enabled
     ID
       Amazon.co.uk
       1.1
       true
       amazon@search.mozilla.org
       Bing
       1.0
       true
       bing@search.mozilla.org
       DuckDuckGo
       1.0
       true
       ddg@search.mozilla.org
       FileLink Provider for Box
       4
       true
       box-cloudfile@darktrojan.net
       FileLink Provider for Dropbox
       7
       true
       dropbox-cloudfile@darktrojan.net
       Google
       1.0
       true
       google@search.mozilla.org
       Wikipedia (en)
       1.0
       true
       wikipedia@search.mozilla.org
 Security Software
   Type: Name
     Antivirus: Malwarebytes;Avast Antivirus
     Antispyware:
     Firewall: Avast Antivirus
 Graphics
     Features
     Compositing: Direct3D 11 (Advanced Layers)
     Asynchronous Pan/Zoom: none
     WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000010f05)

EGL_VERSION: 1.4 (ANGLE 2.1.0.6c72b64f910d) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control

     WebGL 1 Driver Renderer: Google Inc. -- ANGLE (Intel(R) UHD Graphics 630 Direct3D11 vs_5_0 ps_5_0)
     WebGL 1 Driver Version: OpenGL ES 2.0.0 (ANGLE 2.1.0.6c72b64f910d)
     WebGL 1 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_depth24 GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_3D GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture
     WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
     WebGL 2 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000010f05)

EGL_VERSION: 1.4 (ANGLE 2.1.0.6c72b64f910d) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control

     WebGL 2 Driver Renderer: Google Inc. -- ANGLE (Intel(R) UHD Graphics 630 Direct3D11 vs_5_0 ps_5_0)
     WebGL 2 Driver Version: OpenGL ES 3.0.0 (ANGLE 2.1.0.6c72b64f910d)
     WebGL 2 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_copy_texture_3d GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_multisample GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_depth24 GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_3D GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object GL_OVR_multiview GL_OVR_multiview2 OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture
     WebGL 2 Extensions: EXT_color_buffer_float EXT_float_blend EXT_texture_compression_bptc EXT_texture_filter_anisotropic MOZ_debug OES_texture_float_linear OVR_multiview2 WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
     Direct2D: true
     Off Main Thread Painting Enabled: true
     Off Main Thread Painting Worker Count: 4
     Target Frame Rate: 60
     DirectWrite: true (10.0.19041.546)
     GPU #1
     Active: Yes
     Description: Intel(R) UHD Graphics 630
     Vendor ID: 0x8086
     Device ID: 0x3e9b
     Driver Version: 25.20.100.6577
     Driver Date: 2-7-2019
     Drivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32
     Subsys ID: 1a4e1043
     RAM: 0
     GPU #2
     Active: No
     Description: NVIDIA GeForce GTX 1050 Ti
     Vendor ID: 0x10de
     Device ID: 0x1c8c
     Driver Version: 27.21.14.5167
     Driver Date: 7-5-2020
     Drivers: C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumdx.dll C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumd.dll
     Subsys ID: 1a4e1043
     RAM: 4096
     Diagnostics
     AzureCanvasBackend: direct2d 1.1
     AzureContentBackend: direct2d 1.1
     AzureFallbackCanvasBackend: skia
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     Display0: 1920x1080@60Hz
     Display1: 1600x900@60Hz
     DisplayCount: 2
     ClearType Parameters: \\.\DISPLAY1 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] \\.\DISPLAY4 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ]
     Decision Log
     GPU_PROCESS: unavailable by default: Multi-process mode is not enabled
     WEBRENDER: opt-in by default: WebRender is an opt-in featureunavailable-no-gpu-process by runtime: GPU Process is disabled
     WEBRENDER_QUALIFIED: denied by env: Not on allowlist
     WEBRENDER_COMPOSITOR: unavailable by runtime: No DirectComposition usage
     WEBRENDER_ANGLE: opt-in by default: WebRender ANGLE is an opt-in feature
     WEBRENDER_DCOMP_PRESENT: opt-in by default: WebRender DirectComposition is an opt-in feature
     WEBGPU: disabled by default: Disabled by defaultblocked by runtime: WebGPU can only be enabled in nightly
   Crash Guard Disabled Features
   Workarounds
   Failure Log
 Media
     Audio Backend: wasapi
     Max Channels: 2
     Preferred Sample Rate: 48000
     Roundtrip latency (standard deviation): 54.80ms (2.79)
     Output Devices
       Name
       Group
       Vendor
       State
       Preferred
       Format
       Channels
       Rate
       Latency
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       2
       default: 48000, support: 48000 - 48000
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       2
       default: 48000, support: 48000 - 48000
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       2
       default: 48000, support: 48000 - 48000
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       2
       default: 48000, support: 48000 - 48000
       0 - 0
       Speakers (Realtek(R) Audio)
       HDAUDIO\FUNC_01&VEN_10EC&DEV_0235&SUBSYS_104313B1&REV_1000\4&6d02c71&0&0001
       Enabled
       All
       default: F32LE, support: S16LE F32LE
       2
       default: 48000, support: 48000 - 48000
       144 - 480
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       2
       default: 48000, support: 48000 - 48000
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       2
       default: 48000, support: 48000 - 48000
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
     Media Capabilities
     Enumerate database
     Input Devices
       Name
       Group
       Vendor
       State
       Preferred
       Format
       Channels
       Rate
       Latency
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       2
       default: 44100, support: 44100 - 44100
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
       Stereo Mix (Realtek(R) Audio)
       HDAUDIO\FUNC_01&VEN_10EC&DEV_0235&SUBSYS_104313B1&REV_1000\4&6d02c71&0&0001
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
       Line (Galaxy A5 (2017) A2DP SNK)
       BTHENUM\{0000110a-0000-1000-8000-00805f9b34fb}_VID&00010075_PID&0100\7&225d8a66&0&D4AE05D50746_C00000000
       Unplugged
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       2
       default: 44100, support: 44100 - 44100
       0 - 0
       Microphone (Realtek(R) Audio)
       HDAUDIO\FUNC_01&VEN_10EC&DEV_0235&SUBSYS_104313B1&REV_1000\4&6d02c71&0&0001
       Enabled
       All
       default: F32LE, support: S16LE F32LE
       2
       default: 48000, support: 48000 - 48000
       64 - 480
       Disabled
       None
       default: F32LE, support: S16LE F32LE
       0
       default: 0, support: 0 - 0
       0 - 0
 Important Modified Preferences
   accessibility.typeaheadfind.flashBar: 0
   browser.cache.disk.amount_written: 1105853
   browser.cache.disk.capacity: 952320
   browser.cache.disk.filesystem_reported: 1
   browser.cache.disk.smart_size_cached_value: 358400
   browser.cache.disk.smart_size.first_run: false
   browser.cache.disk.smart_size.use_old_max: false
   browser.cache.disk.telemetry_report_ID: 3
   browser.search.region: AU
   dom.apps.reset-permissions: true
   extensions.lastAppVersion: 78.4.2
   font.internaluseonly.changed: true
   font.name.monospace.el: Consolas
   font.name.monospace.x-cyrillic: Consolas
   font.name.monospace.x-unicode: Consolas
   font.name.monospace.x-western: Consolas
   font.name.sans-serif.el: Calibri
   font.name.sans-serif.x-cyrillic: Calibri
   font.name.sans-serif.x-unicode: Calibri
   font.name.sans-serif.x-western: Calibri
   font.name.serif.el: Cambria
   font.name.serif.x-cyrillic: Cambria
   font.name.serif.x-unicode: Cambria
   font.name.serif.x-western: Cambria
   font.size.fixed.el: 14
   font.size.fixed.x-cyrillic: 14
   font.size.fixed.x-unicode: 14
   font.size.fixed.x-western: 14
   font.size.variable.el: 17
   font.size.variable.x-cyrillic: 17
   font.size.variable.x-unicode: 17
   font.size.variable.x-western: 17
   gfx.crash-guard.d3d11layers.appVersion: 78.4.2
   gfx.crash-guard.d3d11layers.deviceID: 0x3e9b
   gfx.crash-guard.d3d11layers.driverVersion: 25.20.100.6577
   gfx.crash-guard.d3d11layers.feature-d2d: true
   gfx.crash-guard.d3d11layers.feature-d3d11: true
   gfx.crash-guard.status.d3d11layers: 2
   gfx.crash-guard.status.wmfvpxvideo: 2
   gfx.crash-guard.wmfvpxvideo.appVersion: 78.4.2
   gfx.crash-guard.wmfvpxvideo.deviceID: 0x3e9b
   gfx.crash-guard.wmfvpxvideo.driverVersion: 25.20.100.6577
   idle.lastDailyNotification: 1604885271
   layers.mlgpu.sanity-test-failed: false
   media.gmp.storage.version.observed: 1
   media.hardware-video-decoding.failed: false
   network.cookie.cookieBehavior: 3
   network.cookie.prefsMigrated: true
   network.predictor.cleaned-up: true
   places.database.lastMaintenance: 1604549736
   places.history.expiration.transient_current_max_pages: 112348
   plugin.flash.arch: x86-msvc
   plugin.flash.blockliststate: 0
   plugin.flash.desc: Shockwave Flash 32.0 r0
   plugin.flash.lastmod_hi: 373
   plugin.flash.lastmod_lo: 1145887405
   plugin.flash.path: C:\WINDOWS\SysWOW64\Macromed\Flash\NPSWF32_32_0_0_445.dll
   plugin.flash.version: 32.0.0.445
   plugin.importedState: true
   privacy.donottrackheader.enabled: true
   privacy.purge_trackers.date_in_cookie_database: 0
   security.remote_settings.crlite_filters.checked: 1604881671
   security.remote_settings.intermediates.checked: 1604881671
   security.sandbox.content.tempDirSuffix: {a3859ea3-b372-434f-8ae7-5f8b710402d8}
   security.sandbox.plugin.tempDirSuffix: {9e3b8c9e-2a04-439b-9eaf-db73fe00e2c6}
   signon.importedFromSqlite: true
   storage.vacuum.last.index: 1
   storage.vacuum.last.places.sqlite: 1603677962
   ui.osk.debug.keyboardDisplayReason: IKPOS: Touch screen not found.
 Important Locked Preferences
   dom.ipc.processCount.webIsolated: 1
   fission.autostart: false
 Places Database
 Accessibility
   Activated: false
   Prevent Accessibility: 0
   Accessible Handler Used: true
   Accessibility Instantiator:
 Library Versions
     Expected minimum version
     Version in use
     NSPR
     4.25.1
     4.25.1
     NSS
     3.53.1
     3.53.1
     NSSSMIME
     3.53.1
     3.53.1
     NSSSSL
     3.53.1
     3.53.1
     NSSUTIL
     3.53.1
     3.53.1
 Sandbox
   Content Process Sandbox Level: 0
   Effective Content Process Sandbox Level: 1
 Startup Cache
   Disk Cache Path: C:\Users\mark\AppData\Local\Thunderbird\Profiles\i88it4ym.default\startupCache\startupCache.4.little
   Ignore Disk Cache: false
   Found Disk Cache on Init: true
   Wrote to Disk Cache: false
 Internationalization & Localization
     Application Settings
     Requested Locales: ["en-US"]
     Available Locales: ["en-US"]
     App Locales: ["en-US"]
     Regional Preferences: ["en-AU"]
     Default Locale: "en-US"
     Operating System
     System Locales: ["en-AU","en-US","de-DE"]
     Regional Preferences: ["en-AU"]
Last Saturday Thunderbird automatically updated to v78.4.0 and immediately I was unable to access emails from the servers (I have 3 accounts on different mail servers). Whenever I selected 'Get Messages' Thunderbird would indicate it was accessing a server but the process hung from there. There are no error messages, just no email. After troubleshooting I have found that disabling Avast's (v20.8.2432) Mail Shield allows Thunderbird to access and download emails normally so I am currently running with that shield disabled.I am running up to date Windows 10. No I have tried running Thunderbird in safe mode without addons, I have tweaked tls.security.min from 3 to 1 via about:config and have completely uninstalled/reinstalled Avast and installed Thunderbird 78.4.1 over the top. Since then I have updated Thunderbird to 78.4.2. None of these have made any difference. Can anyone shed light on this problem for me please. I have run the Thunderbird troubleshooter and the results are below: Application Basics Name: Thunderbird Version: 78.4.2 Build ID: 20201108203418 Distribution ID: Update Channel: release User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.4.2 OS: Windows_NT 10.0 Launcher Process: Enabled Multiprocess Windows: 0/0 Disabled Remote Processes: 0 Enterprise Policies: Inactive Google Location Service Key: Missing Google Safebrowsing Key: Missing Mozilla Location Service Key: Missing Safe Mode: false Mail and News Accounts account1: INCOMING: account1, , (pop3) cp-qh03.syd02.ds.network:995, SSL, passwordCleartext OUTGOING: , cp-qh03.syd02.ds.network:465, SSL, passwordCleartext, true account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext account3: INCOMING: account3, , (pop3) pop3.optusnet.com.au:110, alwaysSTARTTLS, passwordCleartext OUTGOING: , smtp.optusnet.com.au:25, alwaysSTARTTLS, passwordCleartext, true account5: INCOMING: account5, , (pop3) mail.tasmaritime.com.au:995, SSL, passwordCleartext OUTGOING: , mail.tasmaritime.com.au:465, SSL, passwordCleartext, true Crash Reports for the Last 3 Days Remote Processes Type: Count Extensions Name Version Enabled ID Amazon.co.uk 1.1 true amazon@search.mozilla.org Bing 1.0 true bing@search.mozilla.org DuckDuckGo 1.0 true ddg@search.mozilla.org FileLink Provider for Box 4 true box-cloudfile@darktrojan.net FileLink Provider for Dropbox 7 true dropbox-cloudfile@darktrojan.net Google 1.0 true google@search.mozilla.org Wikipedia (en) 1.0 true wikipedia@search.mozilla.org Security Software Type: Name Antivirus: Malwarebytes;Avast Antivirus Antispyware: Firewall: Avast Antivirus Graphics Features Compositing: Direct3D 11 (Advanced Layers) Asynchronous Pan/Zoom: none WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000010f05) EGL_VERSION: 1.4 (ANGLE 2.1.0.6c72b64f910d) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control WebGL 1 Driver Renderer: Google Inc. -- ANGLE (Intel(R) UHD Graphics 630 Direct3D11 vs_5_0 ps_5_0) WebGL 1 Driver Version: OpenGL ES 2.0.0 (ANGLE 2.1.0.6c72b64f910d) WebGL 1 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_depth24 GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_3D GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture WebGL 1 Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context WebGL 2 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000010f05) EGL_VERSION: 1.4 (ANGLE 2.1.0.6c72b64f910d) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control WebGL 2 Driver Renderer: Google Inc. -- ANGLE (Intel(R) UHD Graphics 630 Direct3D11 vs_5_0 ps_5_0) WebGL 2 Driver Version: OpenGL ES 3.0.0 (ANGLE 2.1.0.6c72b64f910d) WebGL 2 Driver Extensions: GL_ANGLE_client_arrays GL_ANGLE_copy_texture_3d GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_multisample GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_depth24 GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_3D GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object GL_OVR_multiview GL_OVR_multiview2 OES_compressed_EAC_R11_signed_texture OES_compressed_EAC_R11_unsigned_texture OES_compressed_EAC_RG11_signed_texture OES_compressed_EAC_RG11_unsigned_texture OES_compressed_ETC2_RGB8_texture OES_compressed_ETC2_RGBA8_texture OES_compressed_ETC2_punchthroughA_RGBA8_texture OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture OES_compressed_ETC2_sRGB8_alpha8_texture OES_compressed_ETC2_sRGB8_texture WebGL 2 Extensions: EXT_color_buffer_float EXT_float_blend EXT_texture_compression_bptc EXT_texture_filter_anisotropic MOZ_debug OES_texture_float_linear OVR_multiview2 WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context Direct2D: true Off Main Thread Painting Enabled: true Off Main Thread Painting Worker Count: 4 Target Frame Rate: 60 DirectWrite: true (10.0.19041.546) GPU #1 Active: Yes Description: Intel(R) UHD Graphics 630 Vendor ID: 0x8086 Device ID: 0x3e9b Driver Version: 25.20.100.6577 Driver Date: 2-7-2019 Drivers: igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32 Subsys ID: 1a4e1043 RAM: 0 GPU #2 Active: No Description: NVIDIA GeForce GTX 1050 Ti Vendor ID: 0x10de Device ID: 0x1c8c Driver Version: 27.21.14.5167 Driver Date: 7-5-2020 Drivers: C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumdx.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumdx.dll C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumd.dll,C:\WINDOWS\System32\DriverStore\FileRepository\nvam.inf_amd64_f92a5acfce8259e8\nvldumd.dll Subsys ID: 1a4e1043 RAM: 4096 Diagnostics AzureCanvasBackend: direct2d 1.1 AzureContentBackend: direct2d 1.1 AzureFallbackCanvasBackend: skia CMSOutputProfile: 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Modified by Wayne Mery

All Replies (6)

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oops. When I said tls.security.min I meant security.tls.version.min

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re :After troubleshooting I have found that disabling Avast's (v20.8.2432) Mail Shield allows Thunderbird to access and download emails normally so I am currently running with that shield disabled.

This is an issue with Avast not Thunderbird. suggest you ask on the Avast support forum. This is a frquent issue with Avast.

Try: In Avast, create an exception for the Thunderbird profile folder, so that the real-time scanner won't attempt to scan the profile with your mail.

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Hi Toad-Hall. Unfortunately that did not work. I can't see why this would be an Avast problem when the problem only started immediately after a Thunderbird update - never a problem before. I'll try their support as well though. Thanks for the reply.

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kramster said

Hi Toad-Hall. Unfortunately that did not work. I can't see why this would be an Avast problem when the problem only started immediately after a Thunderbird update - never a problem before. I'll try their support as well though. Thanks for the reply.

It is an avast problem because if you remove avast hen Thunderbird works as designed. Given AVAST inserts itself between Thunderbird and the mail server and with it installed it does not work and without it installed it does work make it is obvious problem child.

It is probably that avast is issuing certificates for TLS connections that fail validation. The manufacturer of Avast s not a certifying authority and has not submitted o the audit process that get a company to that status. However AVAST is using self issued TLS certificated.

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Hi Matt, I have opened a support ticket on Avast - we'll see what they say.

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Problem solved by Avast support. They asked me to follow the instructions from their official support page for importing the Mail Shield certificate into your mail client, as it should resolve this type of issue: https://support.avast.com/en-my/article/Troubleshoot-invalid-email-certificate]