X
Tap here to go to the mobile version of the site.

Support Forum

This thread was closed and archived. Please ask a new question if you need help.

remove yahoo redirect in search bar

Posted

when i tape something in search bar i automatically redirected to https://maktoob.search.yahoo.com i can't remove that useless search engine i did almost everything but non of this help me 0- my default search engine is Google not yahoo 1- delete all cookies and search history 2- Refresh Firefox and restore Firefox to its default state 3- Open the Windows Control Panel an visit Uninstall a Program but there is no harmful application 4- scan the hole windows vis avg INTERNET security 5- in Firefox Add-ons page there is no add-on but i still get the same problem 6- in Firefox icon when i click in right on proprieties ; there is no thing special in target field

when i tape something in search bar i automatically redirected to https://maktoob.search.yahoo.com i can't remove that useless search engine i did almost everything but non of this help me 0- my default search engine is Google not yahoo 1- delete all cookies and search history 2- Refresh Firefox and restore Firefox to its default state 3- Open the Windows Control Panel an visit Uninstall a Program but there is no harmful application 4- scan the hole windows vis avg INTERNET security 5- in Firefox Add-ons page there is no add-on but i still get the same problem 6- in Firefox icon when i click in right on proprieties ; there is no thing special in target field

Chosen solution

i recheck

C:\Program Files\Mozilla Firefox\defaults\pref

C:\Program Files (x86)\Mozilla Firefox\defaults\pref

then i realized that dsengine.cfg is the problem

i opened it and miss up with the code ( it look like javascript )

and everthing work fine

thank you very much for your help ; )

Read this answer in context 0

Additional System Details

Installed Plug-ins

  • Shockwave Flash 29.0 r0

Application

  • Firefox 56.0b9
  • User Agent: Mozilla/5.0 (Windows NT 6.1; rv:56.0) Gecko/20100101 Firefox/56.0
  • Support URL: https://support.mozilla.org/1/firefox/56.0/WINNT/en-GB/

Extensions

  • NoRedirect 1.3.2.13.1-signed.1-signed ({c1970c0d-dbe6-4d91-804f-c9c0de643a57})
  • Popup Blocker Ultimate 8.1 ({60B7679C-BED9-11E5-998D-8526BB8E7F8B})
  • Remove Redirect 2.2.1 (removeredirect@hyperfekt)
  • Skip Redirect 2.2.1 (skipredirect@sblask)
  • Strict Pop-up Blocker 0.3 (jid1-P34HaABBBpOerQ@jetpack)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: Intel(R) HD Graphics
  • adapterDescription2:
  • adapterDeviceID: 0x0a06
  • adapterDeviceID2:
  • adapterDrivers: igdumdim32 igd10iumd32 igd10iumd32
  • adapterDrivers2:
  • adapterRAM: Unknown
  • adapterRAM2:
  • adapterSubsysID: 06511028
  • adapterSubsysID2:
  • adapterVendorID: 0x8086
  • adapterVendorID2:
  • crashGuards: []
  • direct2DEnabled: False
  • direct2DEnabledMessage: [u'']
  • directWriteEnabled: True
  • directWriteVersion: 6.1.7601.17514
  • driverDate: 3-23-2016
  • driverDate2:
  • driverVersion: 10.18.14.4414
  • driverVersion2:
  • featureLog: {u'fallbacks': [], u'features': [{u'status': u'available', u'description': u'Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'HW_COMPOSITING'}, {u'status': u'available', u'description': u'Direct3D11 Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'D3D11_COMPOSITING'}, {u'status': u'unavailable', u'description': u'Direct2D', u'log': [{u'status': u'available', u'type': u'default'}, {u'status': u'unavailable', u'message': u'Failed to acquire a Direct2D 1.1 factory', u'type': u'runtime'}], u'name': u'DIRECT2D'}, {u'status': u'available', u'description': u'Direct3D11 hardware ANGLE', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'D3D11_HW_ANGLE'}, {u'status': u'unavailable', u'description': u'GPU Process', u'log': [{u'status': u'available', u'type': u'default'}, {u'status': u'unavailable', u'message': u'GPU Process requires the Windows 7 Platform Update', u'type': u'env'}], u'name': u'GPU_PROCESS'}, {u'status': u'unavailable', u'description': u'WebRender', u'log': [{u'status': u'opt-in', u'message': u'WebRender is an opt-in feature', u'type': u'default'}, {u'status': u'unavailable', u'message': u"Build doesn't include WebRender", u'type': u'runtime'}], u'name': u'WEBRENDER'}, {u'status': u'disabled', u'description': u'Advanced Layers', u'log': [{u'status': u'disabled', u'message': u'Disabled by default', u'type': u'default'}], u'name': u'ADVANCED_LAYERS'}]}
  • info: {u'ApzWheelInput': 1, u'ApzDragInput': 1, u'AzureFallbackCanvasBackend': u'cairo', u'AzureCanvasAccelerated': 0, u'AzureCanvasBackend': u'skia', u'AzureContentBackend': u'skia'}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • 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
  • webgl1Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query 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_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context MOZ_WEBGL_lose_context MOZ_WEBGL_compressed_texture_s3tc MOZ_WEBGL_depth_texture
  • 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: 0000000000007944) 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_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_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 MOZ_debug 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: 0000000000007944) 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_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_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: False

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No
FredMcD
  • Top 10 Contributor
4313 solutions 60593 answers

Helpful Reply

Type about:addons<enter> in the address bar to open your Add-ons Manager. Hot key; (<Control> [Mac=<Command>] <Shift> A)

In the Add-ons Manager, on the left, select Extensions. Remove “ Yahoo “ Anything.

Also remove SafeSearch, SearchAssist Incognito, FileConverter Addon, SearchLock, DiscreteSearch, WebSearch, Findwide Search Engine

Now do the same in the computer’s Programs Folder.

Windows: Start > Control Panel > Uninstall Programs. Mac: Open the Applications folder. Linux: Check your user manual.

Type '''about:addons'''<enter> in the address bar to open your Add-ons Manager. Hot key; '''(<Control> ''[Mac=<Command>]'' <Shift> A) ''' In the Add-ons Manager, on the left, select '''Extensions. ''' Remove “ Yahoo “ '''Anything. ''' Also remove SafeSearch, SearchAssist Incognito, FileConverter Addon, SearchLock, DiscreteSearch, WebSearch, Findwide Search Engine Now do the same in the computer’s '''Programs Folder. ''' '''Windows:''' Start > Control Panel > Uninstall Programs. '''Mac:''' Open the '''Applications''' folder. '''Linux:''' Check your user manual.
Happy112 561 solutions 5694 answers

Hello lounis_hamza,

You seem to have already done just about 'everything in the book', except maybe run different scans as listed here :

https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware

However, Maktoob.search.yahoo.com doesn't seem to be a malicious program :

See : https://en.wikipedia.org/wiki/Maktoob

And also : https://www.easycounter.com/report/maktoob.search.yahoo.com

I noticed that your system details show these three extensions :

NoRedirect 1.3.2.13.1 and Remove Redirect 2.2.1 and Skip Redirect 2.2.1

Maybe you should try to contact their developers (as you are being redirected ....... )

Hello lounis_hamza, You seem to have already done just about 'everything in the book', except maybe run different scans as listed here : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware However, Maktoob.search.yahoo.com doesn't seem to be a malicious program : See : https://en.wikipedia.org/wiki/Maktoob And also : https://www.easycounter.com/report/maktoob.search.yahoo.com I noticed that your system details show these three extensions : NoRedirect 1.3.2.13.1 and Remove Redirect 2.2.1 and Skip Redirect 2.2.1 Maybe you should try to contact their developers (as you are being redirected ....... )

Modified by Happy112

jscher2000
  • Top 10 Contributor
8839 solutions 72245 answers

I think the previous posters are most likely correct that this is caused by one of your extensions, although I couldn't tell you which one. You might disable all of them, restart Firefox, and check again.

If that doesn't help, here are two other things you could check:

(1) Connection Settings

You can check on those here:

  • Windows: "3-bar" menu button (or Tools menu) > Options
  • Mac: "3-bar" menu button (or Firefox menu) > Preferences
  • Linux: "3-bar" menu button (or Edit menu) > Preferences
  • Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the search box at the top of the page, type proxy and Firefox should filter to the "Settings" button, which you can click.

The default of "Use system proxy settings" piggybacks on your Windows/IE "LAN" setting. "Auto-detect" can lead to a flaky connection. You may want to try "No proxy".

Any difference?

(2) Program Folder Infection

Could you check for alien script files in your Firefox program folder? In particular, in these locations (varies for 32-bit / 64-bit):

  • C:\Program Files\Mozilla Firefox\defaults\pref
  • C:\Program Files (x86)\Mozilla Firefox\defaults\pref

Caution: Do not double-click script files! The default action for a script file it to execute as a Windows system script. (Typically this would just not work, but why risk it.)

Make sure Windows is showing hidden files: https://support.microsoft.com/en-us/help/14201/windows-show-hidden-files

A file named channel-prefs.js is normal. Any other file in this folder is suspicious -- for example, dsengine.js (added by Lavasoft/AdAware Web Companion). Remove any such files to a neutral location for further analysis at your leisure.


By the way, your Firefox identified itself as a very old beta version of Firefox 56. If you are not ready for Firefox Quantum, do you want to discuss that, or could you at least update to the last Firefox 56 update (56.0.2 non-beta)?

I think the previous posters are most likely correct that this is caused by one of your extensions, although I couldn't tell you which one. You might disable all of them, restart Firefox, and check again. If that doesn't help, here are two other things you could check: (1) Connection Settings You can check on those here: * Windows: "3-bar" menu button (or Tools menu) > Options * Mac: "3-bar" menu button (or Firefox menu) > Preferences * Linux: "3-bar" menu button (or Edit menu) > Preferences * Any system: type or paste '''about:preferences''' into the address bar and press Enter/Return to load it In the search box at the top of the page, type ''proxy'' and Firefox should filter to the "Settings" button, which you can click. The default of "Use system proxy settings" piggybacks on your Windows/IE "LAN" setting. "Auto-detect" can lead to a flaky connection. You may want to try "No proxy". Any difference? (2) Program Folder Infection Could you check for alien script files in your Firefox program folder? In particular, in these locations (varies for 32-bit / 64-bit): * C:\Program Files\Mozilla Firefox\defaults\pref * C:\Program Files (x86)\Mozilla Firefox\defaults\pref Caution: ''Do not double-click script files!'' The default action for a script file it to execute as a Windows system script. (Typically this would just not work, but why risk it.) Make sure Windows is showing hidden files: https://support.microsoft.com/en-us/help/14201/windows-show-hidden-files A file named '''channel-prefs.js''' is normal. '''Any other file''' in this folder is suspicious -- for example, dsengine.js (added by Lavasoft/AdAware Web Companion). Remove any such files to a neutral location for further analysis at your leisure. ---- By the way, your Firefox identified itself as a very old beta version of Firefox 56. If you are not ready for Firefox Quantum, do you want to discuss that, or could you at least update to the last Firefox 56 update (56.0.2 non-beta)?

Question owner

i uninstall Firefox then reboot

an manually remove

C:\Users\Administrator\AppData\Local\Mozilla

C:\Users\Administrator\AppData\LocalLow\Mozilla

C:\Users\Administrator\AppData\Roaming\Mozilla

C:\Users\Administrator\AppData\Local\Temp


then reinstall Firefox 56.0b9 (i like it for personal reason )

start it

set default search engine an stop update

and reconnect to network

close it

and start Firefox again

check default search engine and "yahoo search engine" still as my default

this is weird

i download it from ftp.mozilla.org

then refresh it again and again and again and again

and i just start to be leave it a programmatic issue because Google chrome is fine (but i like Firefox more)

i uninstall Firefox then reboot an manually remove C:\Users\Administrator\AppData\Local\Mozilla C:\Users\Administrator\AppData\LocalLow\Mozilla C:\Users\Administrator\AppData\Roaming\Mozilla C:\Users\Administrator\AppData\Local\Temp then reinstall Firefox 56.0b9 (i like it for personal reason ) start it set default search engine an stop update and reconnect to network close it and start Firefox again check default search engine and "yahoo search engine" still as my default this is weird i download it from ftp.mozilla.org then refresh it again and again and again and again and i just start to be leave it a programmatic issue because Google chrome is fine (but i like Firefox more)
jscher2000
  • Top 10 Contributor
8839 solutions 72245 answers

lounis_hamza said

check default search engine and "yahoo search engine" still as my default

This search engine name (Yahoo Search Engine) is characteristic of a program folder infection caused by the Lavasoft/AdAware program Web Companion. Please see my previous reply for how to check on that.

You may wonder: when you reinstalled Firefox, how can there still be a program folder infection? The reason is that Firefox does not remove the user's script files, it only replaces its own files.

''lounis_hamza [[#answer-1089568|said]]'' <blockquote> check default search engine and "yahoo search engine" still as my default </blockquote> This search engine name (Yahoo Search Engine) is characteristic of a program folder infection caused by the Lavasoft/AdAware program Web Companion. Please see my previous reply for how to check on that. You may wonder: when you reinstalled Firefox, how can there still be a program folder infection? The reason is that Firefox does not remove the user's script files, it only replaces its own files.

Chosen Solution

i recheck

C:\Program Files\Mozilla Firefox\defaults\pref

C:\Program Files (x86)\Mozilla Firefox\defaults\pref

then i realized that dsengine.cfg is the problem

i opened it and miss up with the code ( it look like javascript )

and everthing work fine

thank you very much for your help ; )

i recheck C:\Program Files\Mozilla Firefox\defaults\pref C:\Program Files (x86)\Mozilla Firefox\defaults\pref then i realized that dsengine.cfg is the problem i opened it and miss up with the code ( it look like javascript ) and everthing work fine thank you very much for your help ; )
James
  • Top 25 Contributor
  • Moderator
1603 solutions 11348 answers

lounis_hamza said

then reinstall Firefox 56.0b9 (i like it for personal reason ) check default search engine and "yahoo search engine" still as my default this is weird i download it from ftp.mozilla.org

The b9 on 56.0b9 means it is the ninth Beta channel build (there were 13 Beta builds) of Firefox 56.0. If you must use the old vulnerable 56.0 then at least use the Firefox 56.0.2 Release. http://ftp.mozilla.org/pub/firefox/releases/56.0.2/

The Yahoo search engine was recently removed as one of the default search options to use for users of Firefox 52 ESR, 57.0, 58.0, 59.0 later.

''lounis_hamza [[#answer-1089568|said]]'' <blockquote> then reinstall Firefox 56.0b9 (i like it for personal reason ) check default search engine and "yahoo search engine" still as my default this is weird i download it from ftp.mozilla.org </blockquote> The b9 on 56.0'''b9''' means it is the ninth '''Beta''' channel build (there were 13 Beta builds) of Firefox 56.0. If you must use the old vulnerable 56.0 then at least use the Firefox 56.0.2 Release. http://ftp.mozilla.org/pub/firefox/releases/56.0.2/ The Yahoo search engine was recently removed as one of the default search options to use for users of Firefox 52 ESR, 57.0, 58.0, 59.0 later.
aiikimmell 0 solutions 3 answers

I tried everything and nothing worked until I used the Reset Firefox. It was the ONLY thing that worked for me. A bit pissed I didn't try this first. Go to https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings and follow the instructions. That's it. Supper easy!

I tried everything and nothing worked until I used the Reset Firefox. It was the ONLY thing that worked for me. A bit pissed I didn't try this first. Go to https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings and follow the instructions. That's it. Supper easy!