Hello there, if you paste "about:support" into your URL Browser bar. You can scroll down to your active extensions, to verify which you have. If they don't appear, attempt to reinstall your AdBlockers.

Hi   !

Could it be that you have an adblocker installed on Edge (or IE, whichever Windows browser you have running)  ?

Discovered Hidden Add-on On Firefox. How To Check Yours https://support.mozilla.org/en-US/forums/support-forum-contributors/711335

Type chrome://mozapps/content/extensions/extensions.xul?<enter> in the address bar.

Thanks guys! No sign of ad blocker or Ublock or anything that looks like it is ad block software. Trying to remember back... I wonder if I deinstalled it some time ago and yet the "ghost" of it is still in the machine. Does anyone know where these progs might reside? What part of the registry would they most likely be in? I'll poke around but if you know please tell me. Thanks in advance. Zachary, I had forgotten about support. It's been years since I had a problem with firefox so thanks for reminding me.

paul585 said

Trying to remember back... I wonder if I deinstalled it some time ago and yet the "ghost" of it is still in the machine. Does anyone know where these progs might reside? What part of the registry would they most likely be in? I'll poke around but if you know please tell me.

a) Have you looked at FredMcD's post  ? b) Have you checked Windows Settings => Apps  ?

Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Now in the Reply Box on the forum page, do a right-click in the box and select Paste.

This will show us your system details. No Personal Information Is Collected.

You can try these steps in case of issues with web pages:

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

• hold down the Shift key and left-click the Reload button
• press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
• press "Command + Shift + R" (Mac)

Clear the cache and remove the cookies from websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences).

"Clear the cache":

• Options/Preferences -> Advanced -> Network -> Cached Web Content: "Clear Now"

"Remove the cookies" from websites that cause problems.

• Options/Preferences -> Privacy -> "Use custom settings for history" -> Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

• switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
• do NOT click the "Refresh Firefox" button on the Safe Mode start window

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
• https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems

You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").

Using "Forget About This Site" will remove all data stored in Firefox from that domain like bookmarks and history and cookies and passwords and cache and exceptions, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note.

You can't recover from this 'forget' unless you have a backup of involved files.

If you revisit a 'forgotten' website then data from that website will be saved once again.

• https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox

Websites often tell you something that is ONLY A GUESS. Before driving yourself crazy looking all over your system, consider whether there might be another reason for this mistaken guess. For example:

• Anti-tracking feature: What happened to Tracking Protection?
• Anti-tracking add-on, for example: Blur, Ghostery, or Privacy Badger
• Script blocking extension, for example: NoScript or uMatrix

Thanks guys. Just wanted to say am busy and will try your suggestions in a day or so. Didn't want you thinking I was unappreciative. Cheers.

Name: Firefox Version: 54.0.1 Build ID: 20170628075643 Update Channel: release User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0 OS: Windows_NT 6.1 Multiprocess Windows: 1/1 (Enabled by default) Google Key: Found Mozilla Location Service Key: Found Safe Mode: false

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: Application Update Service Helper Version: 2.0 Enabled: true ID: aushelper@mozilla.org

Name: Avast Online Security Version: 12.0.263 Enabled: true ID: wrc@avast.com

Name: Firefox Screenshots Version: 6.6.0 Enabled: true ID: screenshots@mozilla.org

Name: Multi-process staged rollout Version: 1.50 Enabled: true ID: e10srollout@mozilla.org

Name: Pocket Version: 1.0.5 Enabled: true ID: firefox@getpocket.com

Name: Web Compat Version: 1.1 Enabled: true ID: webcompat@mozilla.org

Name: Avast SafePrice Version: 12.0.278 Enabled: false ID: sp@avast.com

Graphics

Features Compositing: Basic Asynchronous Pan/Zoom: wheel input enabled WebGL 1 Driver WSI Info: EGL_VENDOR: Google Inc. (adapter LUID: 0000000000000000) EGL_VERSION: 1.4 (ANGLE 2.1.0.2a250c8a0e15) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation 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_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 WebGL 1 Driver Renderer: Google Inc. -- ANGLE (Software Adapter Direct3D11 vs_5_0 ps_5_0) WebGL 1 Driver Version: OpenGL ES 2.0 (ANGLE 2.1.0.2a250c8a0e15) WebGL 1 Driver Extensions: 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_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 WebGL 1 Extensions: 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_get 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 WebGL 2 Driver WSI Info: - WebGL2 Renderer: WebGL creation failed: * Refused to create WebGL2 context because of blacklist entry: WebGL 2 Driver Version: - WebGL 2 Driver Extensions: - WebGL 2 Extensions: - Audio Backend: wasapi Direct2D: Blocked for your graphics driver version mismatch between registry and DLL. DirectWrite: true (6.2.9200.22084) GPU #1 Active: Yes Description: Intel(R) HD Graphics 3000 Vendor ID: 0x8086 Device ID: 0x0116 Driver Version: 8.15.10.2712 Driver Date: 3-26-2012 Drivers: igdumd64 igd10umd64 igd10umd64 igdumd32 igd10umd32 igd10umd32 Subsys ID: 06451025 RAM: Unknown GPU #2 Active: No Description: NVIDIA GeForce GT 630M Vendor ID: 0x10de Device ID: 0x0de9 Driver Version: 9.18.13.2702 Driver Date: 8-29-2013 Drivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um Subsys ID: 06461025 RAM: 1024 Diagnostics AzureCanvasAccelerated: 0 AzureCanvasBackend: skia AzureContentBackend: skia AzureFallbackCanvasBackend: cairo failures: CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) Decision Log HW_COMPOSITING: disabled by user: Disabled by pref D3D11_COMPOSITING: unavailable by default: Hardware compositing is disabled D3D9_COMPOSITING: unavailable by default: Hardware compositing is disabled DIRECT2D: unavailable by default: Direct2D requires Direct3D 11 compositing D3D11_HW_ANGLE: unavailable by default: D3D11 compositing is disabled disabled by env: D3D11 compositing is disabled GPU_PROCESS: unavailable by env: Not using GPU Process since D3D11 is unavailable WEBRENDER: unavailable by runtime: Build doesn't include WebRender Crash Guard Disabled Features OpenGL: Reset on Next Restart

Failure Log (#0): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#13): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#14): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#15): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#16): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#17): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#18): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#19): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#20): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#21): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#22): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#23): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#24): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#25): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#26): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0) (#27): CP+[GFX1-]: Failed to allocate a surface due to invalid size (CDT) Size(0,0)

Important Modified Preferences

accessibility.blockautorefresh: true accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 browser.cache.disk.hashstats_reported: 1 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.frecency_experiment: 3 browser.download.importedFromSqlite: true browser.places.smartBookmarksVersion: 8 browser.search.update: false browser.search.useDBForOrder: true browser.sessionstore.upgradeBackup.latestBuildID: 20170628075643 browser.startup.homepage: http://www.metoffice.gov.uk/public/weather/observation/map/#?map=SatelliteIRAndRADAR&zoom=5&lon=-4.00&lat=55.01&fcTime=1 browser.startup.homepage_override.buildID: 20170628075643 browser.startup.homepage_override.mstone: 54.0.1 browser.tabs.remote.autostart.2: true browser.urlbar.searchSuggestionsChoice: false browser.urlbar.userMadeSearchSuggestionsChoice: true dom.apps.lastUpdate.buildID: 20161019084923 dom.apps.lastUpdate.mstone: 49.0.2 dom.apps.reset-permissions: true dom.mozApps.used: true extensions.lastAppVersion: 54.0.1 font.internaluseonly.changed: false gfx.crash-guard.glcontext.appVersion: 45.0.2 gfx.crash-guard.glcontext.deviceID: 0x0116 gfx.crash-guard.glcontext.driverVersion: 8.15.10.2712 gfx.crash-guard.glcontext.gfx.driver-init.direct3d11-angle: true gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle: true gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-force-d3d11: false gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-force-warp: false gfx.crash-guard.glcontext.gfx.driver-init.webgl-angle-try-d3d11: true gfx.crash-guard.status.glcontext: 3 gfx.direct2d.disabled: true gfx.driver-init.appVersion: 41.0.2 gfx.driver-init.deviceID: 0x0116 gfx.driver-init.driverVersion: 8.15.10.2712 gfx.driver-init.feature-d2d: false gfx.driver-init.feature-d3d11: true gfx.driver-init.status: 2 layers.acceleration.disabled: true media.gmp-eme-adobe.abi: x86-msvc-x64 media.gmp-eme-adobe.lastUpdate: 1462824365 media.gmp-eme-adobe.version: 17 media.gmp-gmpopenh264.abi: x86-msvc-x64 media.gmp-gmpopenh264.lastUpdate: 1471609006 media.gmp-gmpopenh264.version: 1.6 media.gmp-manager.buildID: 20170628075643 media.gmp-manager.lastCheck: 1505030424 media.gmp-widevinecdm.abi: x86-msvc-x64 media.gmp-widevinecdm.lastUpdate: 1474814398 media.gmp-widevinecdm.version: 1.4.8.903 media.gmp.storage.version.observed: 1 media.hardware-video-

HI guys, above is about support page. I tried the clear cache and other stuff. I also ran through the registry to see if I could see anything labelled adblock but nothing. Does anyone know the registry keys for adblock? cheers

You inadvertently marked your last post as 'Chosen Solution' - you can rectify that by clicking on the 'Undo' button on the right side of that post.

May I suggest that you disable (or better still : remove) your AVAST software  ? That just might be the culprit ......

yep, I thought it might be a drop down menu offering a different answer...

The thing is that ad block IS working and it's doing what it's supposed to do as other web pages report "you have ad block enabled" and yet I can't see where in my computer it is. Turning off anti virus seems a little extreme. I'll give it a go tomorrow

paul585 said

The thing is that ad block IS working and it's doing what it's supposed to do as other web pages report "you have ad block enabled" and yet I can't see where in my computer it is.

Did you do what FredMcD suggested in his first post and paste in the address bar : chrome://mozapps/content/extensions/extensions.xul? and then press Enter  ?

yes I did that before asking the question. It shows widevine decryption shockwave flash and openh264 video codec

I can see a couple refences to adblock in the avast installation xml file but thats all

Other users without ad block have also received that message. It's a false positive. Disable your other blockers as a test.

I repeat my penultimate post :

May I suggest that you disable (or better still : remove) your AVAST software  ? That just might be the culprit ......