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Unable to download/install ANY/ALL add-ons?

投稿日時

"The add-on could not be downloaded because of a connection failure." error message shows up every time i try to download ANY add-on, not just 3rd party ones. I tried downloading imacros and adblock plus among a couple others but it keeps telling me it can't because of my connection, even though i can load any page on the internet and play online games just fine, and on Chrome and Edge browsers too,

Another annoying note is when I tried downloading older versions to see if that's the problem I keep getting these Secure Connection Failed messages along with a line of

An error occurred during a connection to addons.cdn.mozilla.net. The server uses key pinning (HPKP) but no trusted certificate chain could be constructed that matches the pinset. Key pinning violations cannot be overridden. Error code: MOZILLA_PKIX_ERROR_KEY_PINNING_FAILURE The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem.

"The add-on could not be downloaded because of a connection failure." error message shows up every time i try to download ANY add-on, not just 3rd party ones. I tried downloading imacros and adblock plus among a couple others but it keeps telling me it can't because of my connection, even though i can load any page on the internet and play online games just fine, and on Chrome and Edge browsers too, Another annoying note is when I tried downloading older versions to see if that's the problem I keep getting these Secure Connection Failed messages along with a line of An error occurred during a connection to addons.cdn.mozilla.net. The server uses key pinning (HPKP) but no trusted certificate chain could be constructed that matches the pinset. Key pinning violations cannot be overridden. Error code: MOZILLA_PKIX_ERROR_KEY_PINNING_FAILURE The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem.

選ばれた解決策

First thing to note: all of the discussion about ConnectSafe and DNS settings is completely outside of Firefox config.

ConnectSafe from Norton is just a DNS service that’s supposed to block malicious web sites. A couple other levels will also block based on content (i.e. parental control). As far as I know, the only way to use it is to set your DNS settings to use their servers (instead of your ISP). This can be done at the router level (to affect all devices connected to the router), or on an individual computer. See their site here: https://dns.norton.com

Note that some routers can intercept DNS lookups, and then perform the lookup itself, based on its own settings. Essentially an override. Consequently, you’re probably best off by starting with router settings instead of adjusting OS settings.

Check your current DNS settings. If a ConnectSafe ip address is specified (see their FAQ for the list servers), change it to something else (e.g. Google’s DNS is 8.8.8.8; alternatively change it to your ISP DNS..you’ll have to contact them).

Last I checked, ConnectSafe was listing a TTL of 10 minutes (600 seconds) for addons.cdn.mozilla.net, so you may have to wait over 10 minutes for the change to take effect. You may need to restart the router (to ensure its DNS cache is cleared).

For more additional instructions on updating DNS settings, try any of these: - your ISP support - Google - ConnectSafe FAQ

Finally, I see that Norton Web Safe has once again marked addons.cdn.mozilla.net as unsafe. https://safeweb.norton.com/report/show?url=addons.cdn.mozilla.net

It’s like Norton is trying to break Firefox.

この回答をすべて読む 1

システム詳細の追加情報

アプリケーション

  • Firefox 57.0.2
  • ユーザーエージェント: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0
  • サポート URL: https://support.mozilla.org/1/firefox/57.0.2/WINNT/en-US/

拡張機能

Javascript

  • incrementalGCEnabled: True

グラフィックス

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  • adapterDescription2:
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  • adapterDrivers2:
  • adapterRAM: Unknown
  • adapterRAM2:
  • adapterSubsysID: 00000000
  • adapterSubsysID2:
  • adapterVendorID: 0x8086
  • adapterVendorID2:
  • crashGuards: []
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 10.0.15063.674
  • driverDate: 4-4-2016
  • driverDate2:
  • driverVersion: 10.18.10.4425
  • driverVersion2:
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  • info: {u'AzureContentBackend (UI Process)': u'skia', u'AzureCanvasBackend (UI Process)': u'skia', u'ApzWheelInput': 1, u'ApzDragInput': 1, u'ApzKeyboardInput': 1, u'ApzTouchInput': 1, u'AzureFallbackCanvasBackend (UI Process)': u'cairo', u'ApzAutoscrollInput': 1, u'AzureCanvasAccelerated': 0, u'AzureCanvasBackend': u'Direct2D 1.1', u'AzureContentBackend': u'Direct2D 1.1'}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • offMainThreadPaintEnabled: False
  • webgl1DriverExtensions: GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order 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_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query 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_frag_depth 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_dxt1 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_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_compressed_ETC1_RGB8_texture 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_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
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  • webgl1Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics Direct3D11 vs_5_0 ps_5_0)
  • webgl1Version: OpenGL ES 2.0 (ANGLE 2.1.0.dec065540d5f)
  • webgl1WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000a3c2) EGL_VERSION: 1.4 (ANGLE 2.1.0.dec065540d5f) 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_nv12 EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource 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
  • webgl2DriverExtensions: GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_pack_reverse_row_order 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_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query 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_frag_depth 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_dxt1 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_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_compressed_ETC1_RGB8_texture 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_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
  • webgl2Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc
  • webgl2Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics Direct3D11 vs_5_0 ps_5_0)
  • webgl2Version: OpenGL ES 3.0 (ANGLE 2.1.0.dec065540d5f)
  • webgl2WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000000a3c2) EGL_VERSION: 1.4 (ANGLE 2.1.0.dec065540d5f) 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_nv12 EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource 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
  • windowLayerManagerRemote: True
  • windowLayerManagerType: Direct3D 11
  • windowUsingAdvancedLayers: True

変更された設定

その他

  • ユーザー JS: 無し
  • アクセシビリティ: 無し
jscher2000
  • Top 10 Contributor
解決数 8783 件 回答数 71835 件
投稿日時

役に立った返信

Could you look at this recent post about one reason for the "connection failure" error being Norton ConnectSafe DNS: https://support.mozilla.org/questions/1183370#answer-1054133

Could you look at this recent post about one reason for the "connection failure" error being Norton ConnectSafe DNS: https://support.mozilla.org/questions/1183370#answer-1054133

質問者

Thank you!! I see, I do get that warning message. I don't know much about these things so I just wasn't sure what was going on. How would I adjust DNS settings to not use Norton ConnectSafe..? I've been going crazy the past few days trying to get add-ons installed haha, reinstalled Firefox at least 2-3 times already

Thank you!! I see, I do get that warning message. I don't know much about these things so I just wasn't sure what was going on. How would I adjust DNS settings to not use Norton ConnectSafe..? I've been going crazy the past few days trying to get add-ons installed haha, reinstalled Firefox at least 2-3 times already
jscher2000
  • Top 10 Contributor
解決数 8783 件 回答数 71835 件
投稿日時

役に立った返信

Hi Feralviper, I don't use Norton myself so it's difficult to make specific suggestions. Let me mention your thread over there and see if the Norton user can help you.

Hi Feralviper, I don't use Norton myself so it's difficult to make specific suggestions. Let me mention your thread over there and see if the Norton user can help you.
oilblue99 解決数 1 件 回答数 4 件
投稿日時

選ばれた解決策

First thing to note: all of the discussion about ConnectSafe and DNS settings is completely outside of Firefox config.

ConnectSafe from Norton is just a DNS service that’s supposed to block malicious web sites. A couple other levels will also block based on content (i.e. parental control). As far as I know, the only way to use it is to set your DNS settings to use their servers (instead of your ISP). This can be done at the router level (to affect all devices connected to the router), or on an individual computer. See their site here: https://dns.norton.com

Note that some routers can intercept DNS lookups, and then perform the lookup itself, based on its own settings. Essentially an override. Consequently, you’re probably best off by starting with router settings instead of adjusting OS settings.

Check your current DNS settings. If a ConnectSafe ip address is specified (see their FAQ for the list servers), change it to something else (e.g. Google’s DNS is 8.8.8.8; alternatively change it to your ISP DNS..you’ll have to contact them).

Last I checked, ConnectSafe was listing a TTL of 10 minutes (600 seconds) for addons.cdn.mozilla.net, so you may have to wait over 10 minutes for the change to take effect. You may need to restart the router (to ensure its DNS cache is cleared).

For more additional instructions on updating DNS settings, try any of these: - your ISP support - Google - ConnectSafe FAQ

Finally, I see that Norton Web Safe has once again marked addons.cdn.mozilla.net as unsafe. https://safeweb.norton.com/report/show?url=addons.cdn.mozilla.net

It’s like Norton is trying to break Firefox.

First thing to note: all of the discussion about ConnectSafe and DNS settings is completely outside of Firefox config. ConnectSafe from Norton is just a DNS service that’s supposed to block malicious web sites. A couple other levels will also block based on content (i.e. parental control). As far as I know, the only way to use it is to set your DNS settings to use their servers (instead of your ISP). This can be done at the router level (to affect all devices connected to the router), or on an individual computer. See their site here: https://dns.norton.com Note that some routers can intercept DNS lookups, and then perform the lookup itself, based on its own settings. Essentially an override. Consequently, you’re probably best off by starting with router settings instead of adjusting OS settings. Check your current DNS settings. If a ConnectSafe ip address is specified (see their FAQ for the list servers), change it to something else (e.g. Google’s DNS is 8.8.8.8; alternatively change it to your ISP DNS..you’ll have to contact them). Last I checked, ConnectSafe was listing a TTL of 10 minutes (600 seconds) for addons.cdn.mozilla.net, so you may have to wait over 10 minutes for the change to take effect. You may need to restart the router (to ensure its DNS cache is cleared). For more additional instructions on updating DNS settings, try any of these: - your ISP support - Google - ConnectSafe FAQ Finally, I see that Norton Web Safe has once again marked addons.cdn.mozilla.net as unsafe. https://safeweb.norton.com/report/show?url=addons.cdn.mozilla.net It’s like Norton is trying to break Firefox.
jscher2000
  • Top 10 Contributor
解決数 8783 件 回答数 71835 件
投稿日時

oilblue99 said

Finally, I see that Norton Web Safe has once again marked addons.cdn.mozilla.net as unsafe. https://safeweb.norton.com/report/show?url=addons.cdn.mozilla.net It’s like Norton is trying to break Firefox.

The problematic version 2.0.0 of the "Open With Adobe PDF Reader" extension identified on that report page has been removed from the Add-ons site, so hopefully Norton will clear the server again soon. They are providing a useful service identifying individual problem extensions, but blocking the entire domain is definitely overkill.

Of course, Firefox's built-in download blocking (based on Google's Safe Browsing service) works the same way, but due to user pressure, Firefox also has an override button for cases where the user still wants the download. It's difficult to picture how that could be done in this case because the request occurs in the background.

''oilblue99 [[#answer-1054756|said]]'' <blockquote> Finally, I see that Norton Web Safe has once again marked addons.cdn.mozilla.net as unsafe. https://safeweb.norton.com/report/show?url=addons.cdn.mozilla.net It’s like Norton is trying to break Firefox. </blockquote> The problematic version 2.0.0 of the "Open With Adobe PDF Reader" extension identified on that report page has been removed from the Add-ons site, so hopefully Norton will clear the server again soon. They are providing a useful service identifying individual problem extensions, but blocking the entire domain is definitely overkill. Of course, Firefox's built-in download blocking (based on Google's Safe Browsing service) works the same way, but due to user pressure, Firefox also has an override button for cases where the user still wants the download. It's difficult to picture how that could be done in this case because the request occurs in the background.