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My wife’s Thunderbird has had problems for several weeks. To repair them, I have disconnected from our e-mail provider (Proton.me), & reconnected to it. Everything seems to be fine but her Thunderbird Inbox. There are no emails in it, but it insists there are two (2). I have tried to compact the folder & to repair the folder, but these actions have no effect. How do I get her inbox clear of this problem, so I can focus on her bigger problem?

When I try to download messages from Proton’s inbox, I get this message: “Thunderbird. The current operation on ‘Inbox’ did not succeed. The mail server for account loiscodling@proton.me responded: no such mailbox.. .”

If I access the account directly through Firefox, the inbox is visible with a large number of files in it. Mail in all the other folders on Proton has downloaded correctly to Thunderbird, but not the inbox.

I have have had a Gmail address for a few years and have just created a new Gmail address, I am trying to copy about 20,000 emails from the original Gmail IMAP folders to local Thunderbird folders as a backup, and then copy them to the new Gmail address IMAP folders.

I have tried copying these in smaller amounts as suggested (between 200 and 500 at once) This seems to go well, however, when I have completed the task the original folder has a much higher amount of messages in it than the new one, so some messages are being lost along the way.

Is there a reliable method to do this, such as closing Thunderbird and then copying and pasting data held in the profile folder, or does it need to be done with Thunderbird running?

Many Thanks in advance

I thought I had successful auto install W-10 but when I open to send 1st message the"+ new message" button is not active/working. Per article this is how to start. Thanks for help.

URGENT! My emails are from 5 roadrunner.com (former mail.twc.com) New owner Spectrum is closing us out of our accounts. How can I protect my 15 GB of emails?? Will they disappear if I can no longer access roadrunner? I'm not sure if the server will be swept, but it's in the works. Please tell me how I can bulk save these lifetime of emails...fast! Thank you! p.s. I am computer illiterate and very nervous! I will appreciate step-by-step. (I thought I was safe downloading them to my computer with Thunderbird, but now I think I need to do more to secure them locally.....thank you!

We are currently rolling out a profile management solution based on Ivanti User Environment Manager. In order to configure file includes and excludes in the profile management tool, we have to “standardize” the Firefox profile path in the filesystem. We have implemented a PowerShell script, which reads the currently used profile from %appdata%\Mozilla\Firefox\install.ini, renames the appropriate profile subfolder to “firefox.default-esr” and replaces the entries in installs.ini and profiles.ini.

The script seems to be reliable. However, for around 10% of the users, we are seeing issues when the user launches Firefox after the “firefox profile migration” happened. Firefox opens but none of the GUI controls is accessible. Firefox is completely unusable. See screenshot attached.

We do have workarounds to resolve this issue, such as completely wiping the %appdata%\Mozilla\Firefox folder and let Firefox re-build everything from scratch. But we are still trying to find the root cause the issue, because our customers have more than 100k clients, what will be a big impact and hard to handle for the helpdesk.

We are currently unable to reproduce the issue on test clients. Even copied Firefox profile folders form affected clients don’t show the issue on other clients.

Therefore we want to find out and ask for your help:

- Is there a supported way to “standardize” the filesystem folder name of the Mozilla Firefox (ESR) profile of a user? - What are the files within a Firefox profile that are required for the profile and the application itself to properly start? - Do you have any idea which files in a Firefox profile (in a corrupted state) could cause our issue?

Hello!

I am getting consistent issues with Firefox where the tabs seemingly just crash with no rhyme or reason to them. Could be within a few seconds, could be after a few minutes. Doesn't seem to be one website causing it either as I was worried it was Twitch but I get issues browsing other places too. Any help would be appreciated!

Here are the last 5 crash reports:

https://crash-stats.mozilla.org/report/index/ec73ed64-a446-42d2-9d3c-7e4eb0251111 https://crash-stats.mozilla.org/report/index/3cee5bdf-a6c5-423b-be72-495120251111 https://crash-stats.mozilla.org/report/index/b56f84df-ad2a-4bca-9ed4-c168c0251111 https://crash-stats.mozilla.org/report/index/accb021f-0cf7-4b20-a2cc-99e8d0251111 https://crash-stats.mozilla.org/report/index/91189681-3123-4d91-ab6a-c5f2c0251111

I’ve been having issues with Firefox on iOS. As you can see on the screenshots, the URL bar section expands on blocks half off my screen. When I scroll down the URL bar is hidden and the issue disappears but when I scroll up the same issue returns. It doesn’t seem to be specific to a certain website and is really disruptive.

I’m using an iPhone SE, iOS version 26.0.1, Firefox is updated.

Hi, is there a way to setup access shared e-mail accounts (they appear as unlicensed accounts in office 365 business accounts)? In office365 business accounts, it is possible to setup general mailboxes like sales@ etc. and grant access of said mailbox to user account of choice. OAuth2 login for these accounts does not exist, instead, login occurs via user accounts and then the shared accounts appear for such user, it is not possible to login with or setup shared mailboxes with a password as it is normal (licensed) user accounts. According to Chat-GPT5 it is difficult or impossible, it says login name would be something like licensedusername@company.com\sharedmailbox@company.com, so for example, eric.smith@contoso.com\sales@contoso.com But that doesn't seem to work, like a silly suggestion, outlook.office365.com server then asks for credentials of said eric.smith@contoso.com\sales@contoso.com as if it were a single username! so if you have any info if that is possible, any work-around, pls let me now! Thank you - Andreas Hartmann (ADEC Technologies Ltd)

For the third time now I have found messages I have saved in Local folders in TRASH. I did not put them there, and the original ones in Local Folders are empty. I have had to manually move messages intended to be saved from Trash into my intended folders. I am perplexed why this is happening, as I have not chosen Compact Folders or anything. Very, very annoying. If it continues I will search for another mail tool

Hello Team, today suddenly while restarting the PC, I did not close Firefox and restarted it. But when I opened it, a new Firefox appeared in front of me where Password bookmarks are nothing, how can I get them back?