Thunderbird Support Forum

Running TB 115.4.1 (64-bit), POP3 account, up until this morning everything was fine.

Now getting msg - "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox."

Have more than 70 Gb free on my drive. Have tried: -deleting messages and compacting the inbox. -using TB's built-in repair folder utility. -deleting and re-creating the global-messages-db.sqlite file in my profile

Have logged into my email with my browser and can't find anything wrong with the account itself. Everything seems ok on that end.

Nothing has worked. Any other suggestions?

I have submitted 2 questions on having to reboot the computer because thunderbird hung. This usually affects my main gmail account. I just discovered a way to get out without rebooting. I went to task manager and found there were 3 thunderbird processes running. (Is that normal?) I ended the third process and thunderbird quit. I restarted it and it was no longer hung.

When it is hung, there is a blue line at the right hand bottom of the page showing it is trying to do something. It hangs if I end Thunderbird and restart it. I am running Windows 11 that was upgraded from my preinstalled windows 10 computer. I keep the OS up to date.

Hello community. My company decided, right before Christmas, to force-migrate all e-mail addresses from the functioning old servers to "Exchange Online", which not only made the web-browser based access more complicated, but also required changes in Thunderbird. While they provided instructions, which I slavishly followed (despite being usually rather hand around the computer), I still cannot send e-mails with my work address - they get timed out. My company IT are notoriously unwilling to help with issues on the private computer and have recommended even beforehand to from now on only use the web-based access to avoid trouble - which is laughable, for me, as I need my e-mails offline as well. So before harassing them more loudly, I wanted to make sure it's a fault on their end not on mine.

Some details: New server is outlook.office365.com, SMTP port 587. Security level is STARTTLS, authentification OAuth2. These are the changed options requested by the company IT. The window popping up when trying to send a message asks me to chose a certificate for athentification and suggests "Adobe Conetent Certificate 10-7". Neither installing this manually, accepting, or changing something under "further options" changes the outcome that the message will be timed out. As my private e-mail also uses port 587, and it still works perfectly normal, this port is not generally blocked by the windows defender or antivirus (I use Kaspersky).

Maybe someone has an idea what it happening here? Or knows if to slve it by installing a particular different certificate?