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My Thunderbird install updated from 140.13.0esr to 153.0.2esr yesterday and now I can no longer drag and drop any attachment from an email to any folder on my computer. I simply get an error message window with a title of "Error Moving File or Folder" with "Unspecified error" text. See image attachment.

I've tried a variety of folders, including Downloads, Documents, Pictures and other folders on local and external storage devices.

I can save the attachments using the Save All button, or by right-clicking a file and choosing Save As, but not by dragging and dropping as I have done so for years.

I have checked if Thunderbird is running in admin mode, which it is not, but have tested it both ways with the same problem occurring. I have also run Thunderbird in Troubleshoot mode, and the same thing occurs. I tried clearing the startup cache from the troubleshooting page with no change. Restarting the PC did not resolve the issue, and disabling my anti-virus(Avast) also did not make a difference to the issue.

Hello! Since the latest update to Firefox (153, I believe) my Firefox has not worked. It starts up perfectly fine, but quickly freezes, becomes non-responsive, and needs to be closed. No matter how many times I attempt to open it, the same thing occurs. There’s been been occasions where it hasn’t frozen immediately so I have been able to turn off hardware acceleration as well as remove my theme and disable all my add-ons/extensions, but this has done nothing. Creating a new profile does not help, nor does trying Safe Mode: the same thing happens no matter what. I tried to reinstall the update, but this also did nothing. I haven’t yet tried to uninstall & reinstall or do a Firefox refresh as those are my last resorts and I won’t do them unless I’m sure they’ll make a difference. I haven’t downloaded any new extensions recently, and this only started happening after the most recent update. I’m not sure what else I can try at this point, and am very frustrated.

The mouse cursor does not highlight text in the address bar. It is selecting the text but the blue 'select' highlight doesn't show so I'm working blind. Firefox 154.0b5 Build ID: 20260731090442 (64-bit) on Windows 11 Home 25H2. Build 26200.8875 Tested in troubleshoot mode - same issue.

No point adding screenshots to show an invisible select highlight.  :-)

Name Firefox Version 154.0b5 Build ID 20260731090442

I cannot get audio to play on the browser. I've gone into settings and the default says that audio should be on for all websites. However, Youtube, facebook, instagram, etc., won't play audio. Audio plays on other browsers (Chrome, Edge). what must I do to get audio working?

In trying to launch Thunderbird, I am now for the first time being asked for my primary Thunderbird password. I do not remember setting this up and I have no record of this. How do I reset this password so that I can open thunderbird? I have been using Thunderbird for several years now and have never previously been asked for a primary password.

Two days ago I started my PC to discover a firefox update with an option to change my default firefox appearance by adding a wallpaper image. I have now decided that I want to remove that image, but I cannot find out how to do so.

In recent update several duplicate folders were installed in three different email accounts. Point to them there was a 'delete' button enabling elimination of duplicates. However, on two accounts, 'Drafts' duplicates didn't have the delete button enabling elimination. How to clean up?

When I woke up to an update saying tab groups were now on android I was thrilled. ... And then I couldn't use them.

I have confirmed, to the best of my ability, that I am on the correct version, version 153.0, in the firefox settings. I have read the article about creating them back to front. I turned my phone on and off again, cleared the cache, etc etc... As far as I can reasonably tell, it should work, and it just doesn't.

Pixel 6a, android 17.