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After updating Windows 11 machine to Thunderbird Nebula, I am asked for a password when trying to subscribe a public nextcloud network calendar. I have installed this same calendar dozens of times on our school staff's desktops, so I know how to do it. I am pretty sure the upgrade broke it.

Hi, My instance of Thunderbird keeps crashing. I've tried emptying the startup cache, troubleshooter mode, reboot windows, turn off anti-virus. Nothing seems to work. It freezes sometimes and needs to be killed, but most times it crashes, sometimes right upon startup. I am not sure how to debug. Thank you! -D

Ever since I switched to Firefox a few months ago, i've noticed that the audio on youtube music vids cuts out when I put the video on a loop sometimes. Moving the play bar to a different point/time on the video fixes it but it is extremely annoying. Can anyone help with fixes? Thanks

Is there a way to force FF to use HTTP/3? There are multiple instances (youtube, for example) when site says "alt-svc: h3", but FF ignores it and keeps using at best HTTP/2.

I have been told by my bank that firefox wants their customers who are having a problem with the website when using firefox to contact firefox directly. How do I do that? I have wasted way too much time trying to find that contact information. Any help would be greatly appreciated.

When I input my backup code, mozilla shows the error "There was a problem confirming your backup authentication code". I tried inputting just one of the codes and all the codes. I'm not sure what to do.

OK, this is really complicated, and involves trying to rescue an old Eudora account to Thunderbird. If anyone wants the whole gory story, please ask and I'll tell all. ( I used Eudora Mailbox Cleaner and Eudora Rescue.) But the simple question is: is it possible to import a Thunderbird profile created on a Mac into a Thunderbird program on a PC? Thanks for any help.

My desktop lost power, I went to restart and opened Thunderbird. I think it went to an updated version. The usual page that I had to confirm and enter password were not there, at least I didn't see it anyway. I noticed a tab for "create new account". So I did that, which it opened all new emails, but my old ones were gone and I don't have any of them saved to a folder. Is there a way to migrate the old emails to the new account? Thanks in advance

I use pop3 for all my emails. I am setting up a new computer (not copying over old email backups) and trying to get my msn.com and live.com set up. It keeps telling me my username or password is incorrect. I can sign into the microsoft email directly, so I know they are correct. In thunderbird I add email and password for the msn email. click on pop3 - it auto populates the info. but when I click done - it states: unable to login at server. probably wrong configuration or username and password. (I did try imap with the same username and password and it worked - I just prefer to keep everything on my computer)

I had two Firefox windows open and I accidentally closed the good one while trying to close out another app. Is there an "in-Firefox" app that will restore everything?

I tried reading the instructions but couldn't comprehend them outside of changing the name of sessionstore.something. I couldn't comprehend where to get the tabs I accidentally closed.

I would prefer the easy button. The easiest button possible.

Thanks.

This issue started a few weeks ago. When I receive an email in my outlook account and click on it, a new window opens but there is no content, the page is blank. I know the link is working because if I copy and paste it into a new window it works fine. Is there a setting I need to change to be able to click on a link and have it open, like it has in the past? Since it is a new issue I am not sure if it is from an update or something. Thank you

On my email account - keith@mediafivecorp.com - sometimes ALL my SENT emails are shown, but at other times only a about 15 or 20 show up...and from a wide range of past years. How can I get ALL my sent emails to show up all the time? Thanks.bold text

Hello,

Ever since I updated to the new Nebula version, fonts in some of the emails I've been getting are this weird flat/fat font that I have no idea what it is or why this started happening.

How do I correct this? (see attached screenshots for examples of this font in red boxes)

Thank you.