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YouTube thumbnails not showing in Firefox on Win 10 computer

.: Hello. A couple of days ago Firefox stopped displaying thumbnails of YouTube videos. I tried YouTube on other browsers and the thumbnails appeared as usual. On Firefox… (閱讀更多)

.: Hello. A couple of days ago Firefox stopped displaying thumbnails of YouTube videos. I tried YouTube on other browsers and the thumbnails appeared as usual. On Firefox, they've disappeared, but only on my Windows 10 computer. The YouTube thumbnails appear on Firefox on my MacBook. The attached graphic shows what it looks like on my Win 10 computer.

Any ideas on how to solve this would be greatly appreciated. I have also searched the Internet and YouTube for a solution, but was unable to find one that works.

Thank you.

Solved 封存 8 757

V143.0.1 update what's new page display is odd.

Hi. The "What's New?" page displayed all this: __________________________________________________ Help us improve your firefox.com experience In addition to Cookies neces… (閱讀更多)

Hi. The "What's New?" page displayed all this: __________________________________________________ Help us improve your firefox.com experience

In addition to Cookies necessary for this site to function, we’d like your permission to set some additional Cookies to better understand your browsing needs and improve your experience. Rest assured — we value your privacy. Cookie settings Firefox home

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View all Firefox Features

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Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR 64-bit

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Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox. Download Firefox ESR Firefox Privacy Notice Download

Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR 64-bit

Download Firefox ESR 32-bit Download a different build

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox. Download Firefox ESR Firefox Privacy Notice Release Notes

   Desktop Desktop Beta & Developer Edition Desktop Nightly Android iOS 

See what’s new in Firefox!

Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release. 143.0.1 Firefox Release

September 19, 2025 Version 143.0.1, first offered to Release channel users on September 19, 2025 Fixed

   Fixed a tab crash experienced by some users caused by DLL injection. (Bug 1872261)
   Reference link to 143.0 release notes.

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Download Firefox — English (US)

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Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR 64-bit

Download Firefox ESR 32-bit Download a different build

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox. Download Firefox ESR

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Solved 封存 2 482

Mystified

Using your browser as my default and going to https://bracingviews.substack.com/p/yes-its-about-the-oil, https://jonathancook.substack.com/p/western-elites-fear-a-globali… (閱讀更多)

Using your browser as my default and going to https://bracingviews.substack.com/p/yes-its-about-the-oil, https://jonathancook.substack.com/p/western-elites-fear-a-globalised and https://georgehazim.substack.com/p/murdochs-australian-manufacturing, regular sites where I comment often, since Thursday there's no visible button to post my comment. Never encountered that before.

Using another browser, I can comment in Jonathan Cook and George Hazim's Blog but not in Bracing Views

Moderator note: This question has been edited to fix a link.

Solved 封存 2 475

Сайты с сервисами Яндекс не открывает

Здравствуйте. Сайты с сервисами от компании Яндекс не работают - не грузятся. Пробовал почистить куки, перезагрузиться, не помогает. Открыл в новом приватном окне, все з… (閱讀更多)

Здравствуйте. Сайты с сервисами от компании Яндекс не работают - не грузятся. Пробовал почистить куки, перезагрузиться, не помогает. Открыл в новом приватном окне, все заработало. В чём может быть дело? Работать в приватном окне - не удобно.

Solved 封存 1 402

Gmail not working correctly in Firefox

Since the last update, Gmail has not been working correctly on Firefox. All of the buttons to the left of inbox emails that enable you to move, categorize, file, etc your… (閱讀更多)

Since the last update, Gmail has not been working correctly on Firefox. All of the buttons to the left of inbox emails that enable you to move, categorize, file, etc your emails have disappeared. I have tested my Gmail account on Chrome, Edge and DuckDuckGo browsers, and everything displays correctly. Please help. An image of the missing buttons is attached (well, since there aren't there, you're seeing a blank area of gray to the immediate left of my inbox [or any other folder] emails). Many thanks -- this is driving me crazy. P Haynes

Solved 封存 1 381

Youtube error

Hi I keep getting this error on Firefox. I did disable all my extensions prior to this image shown to see if it was an extension causing an issue to no avail. I also look… (閱讀更多)

Hi I keep getting this error on Firefox. I did disable all my extensions prior to this image shown to see if it was an extension causing an issue to no avail. I also looked for an update for Firefox and saw it was up to date. I also attempted to refresh Firefox which was a successful refresh however the error persisted. After refreshing I fully uninstalled Firefox and then reinstalled however the issue persists.

This error is shown however if I refresh the page sometimes the page freezes as if it lost connection and sometimes it reloads as per normal with the video playable.

Solved 9 312

ArcGis either won't load or takes hours

I use Arcgis quite a bit for property info and for the last several months, it either won't fully load or has constant freezes when doing anything. It also freezes other … (閱讀更多)

I use Arcgis quite a bit for property info and for the last several months, it either won't fully load or has constant freezes when doing anything. It also freezes other windows I have open and most the time when I shut down those windows and start FireFox again, my home screen (Start Page) won't load? I have to dump history/cookies and sometimes flush dns. I contacted ArcGis and they say it works fine on their end. So I suspect FireFox is the issue.

I downloaded the Opera browser last night and it has no problems with this site. I won't use chrome or edge.

Any help figuring out what's going on? I have changed no settings, no vpn, no private browsing either. It seems with each FireFox update, my issues get worse?

Win 10 on desktop. FF version 145.0.1 the site in question https://experience.arcgis.com/experience/ba70b3d86f5e4bbeb7582591f3dde16a/

Solved 封存 2 266

Firefox not loading certian websites (facebook) but only on my PC

I'm not sure why, but starting a couple of days ago Firefox will not load a couple (there may be others) of my regularly used sites - the page just 'hangs' or only partia… (閱讀更多)

I'm not sure why, but starting a couple of days ago Firefox will not load a couple (there may be others) of my regularly used sites - the page just 'hangs' or only partially loads:

facebook.com theguardian.com

These are on my Windows 11 PC which I use 95% of the time. They load fine on my Windows 10 laptop which has the identical Firefox settings (they are Synced) with the same Extensions.

I have uninstalled and reinstalled Firefox on my PC to see if this helps, but the issue remains.

The websites load fine using Chrome on my PC.

Can anyone offer any thoughts as to why this is happeneing and offer any solutions?

Solved 封存 1 266

Malwarebytes website

I have been trying to get on the Malwarebytes website, but I keep getting; Your connection is not secure The owner of links.malwarebytes.com has configured their website … (閱讀更多)

I have been trying to get on the Malwarebytes website, but I keep getting;

Your connection is not secure

The owner of links.malwarebytes.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

links.malwarebytes.com uses an invalid security certificate. The certificate is only valid for the following names: *.fortinet.com, fortinet.com Error code: SSL_ERROR_BAD_CERT_DOMAIN


This happens with all of my web browsers. Is it safe to allow Fortinet ?

Solved 封存 11 255

Can't access Facebook after 145.0 update

Since update to latest version of Firefox, I cannot access content on Facebook. All I get after long wait is the blank screen with the Facebook logo in the middle and Met… (閱讀更多)

Since update to latest version of Firefox, I cannot access content on Facebook. All I get after long wait is the blank screen with the Facebook logo in the middle and Meta logo at the bottom. No problem before update. Other sites seem OK but take much longer to load. I can get Facebook with MS Edge. I'm using Windows 10 on PC.

Marrose

Locked 封存 2 255

Email access

Since upgrading to Windows 10, I can only access my Yahoo email using Microsoft Edge. When I try to access in Firefox or Google Chrome, my access is denied. I've tried cl… (閱讀更多)

Since upgrading to Windows 10, I can only access my Yahoo email using Microsoft Edge. When I try to access in Firefox or Google Chrome, my access is denied. I've tried clearing cookies, browser history, rebooting my router, etc. Any ideas I can try?

Solved 封存 6 247

Tumblr

Something's wrong with my Tumblr. When Firefox crashed before it updated, my Tumblr has completely broke (It won't show any notifcations that someone posted, the activity… (閱讀更多)

Something's wrong with my Tumblr. When Firefox crashed before it updated, my Tumblr has completely broke (It won't show any notifcations that someone posted, the activity is stuck at 2 and community at 6). PLEASE HELP

Solved 2 246

Remove blue ball from tab

How can I remove the moving blue ball from the tab of a frequently used website? It's distracting and hopefully not symptomatic of a problem It appeared on this new compu… (閱讀更多)

How can I remove the moving blue ball from the tab of a frequently used website? It's distracting and hopefully not symptomatic of a problem It appeared on this new computer/monitor, used to be an icon Thanks, --Laurie

Solved 封存 3 237

lates update crashes the view of pages on my nas

Two QNAP NAS displayed readable web pages this morning. Early afternoon I updated Firefox with a reset and the admin pages on both servers are unusable. How can I roll b… (閱讀更多)

Two QNAP NAS displayed readable web pages this morning. Early afternoon I updated Firefox with a reset and the admin pages on both servers are unusable. How can I roll back Firefox or recover the earlier version?

Solved 封存 4 227

Picture Verification

Picture Verification is not working in Firefox. It works correctly in Chrome. When trying to access prosper.com, it continues to send a link to check pictures. When click… (閱讀更多)

Picture Verification is not working in Firefox. It works correctly in Chrome. When trying to access prosper.com, it continues to send a link to check pictures. When clicking on the correct pictures, it comes back a repeats another picture.

[email removed]@yahoo.com

Solved 封存 4 226