Diễn đàn hỗ trợ Thunderbird

Every time I start TB on Windows 10, I am seeing "Compact folders". The prompt is offering to save around 310MB, but no matter how many times I select COMPACT NOW, I still get the prompt next time.

I have tried:

 - compact all folders in all accounts
 - Repair Folders in all accounts, all folders (which took a while! I have 10 email accounts)
 - deleting global-messages-db.sqlite

Any ideas on how to resolve this would be appreciated. Email is still working fine, I am just trying to get rid of the never ending prompt.

TB version 147.0 (yes, I know, I know. But I have made it look exactly how I want, so I avoid regular updates unless absolutely necessary.) Thanks.

since 2 years, the option "send to an email addres" isn't fonctionning, connected to this problem, is de "resize" operation that desappeared. It was so practical, fast and relaible method to proceed.

I use Thunderbird on a Mac, where Gmail is my default email. When I try to send an email, it often takes 10 tries before it goes through, due to timeouts. How can I fix this?

I've been running TB for 10-12 years, generally with no problems. When I logged in on 5/13/26, I saw that Windows had run an overnight update:

    2026-05 Security Update (KB5089549) (26200.8457)

Thunderbird (version 147.0.2.0) was not running, although it had been when I slept the PC the previous night.

Now, when I try to start TB it gives me the crash report dialog. Selecting the Restart option just brings me back to the crash report.

In searching for possible causes, I see that this may be caused by a bad profile. So I open the profile folder with (run) %APPDATA%\Thunderbird\Profiles\ which in my case is:

  C:\Users\<user_name>\AppData\Roaming\Thunderbird\Profiles

This is an empty directory. But if I go up one level to \Thunderbird there is a profile.ini file which contains (actual user ID replaced by <user_ID>:

[Install8216C80C92C4E828] Default=E:\Thunderbird\Profiles

[Profile0] Name=<user_ID> IsRelative=0 Path=E:\Thunderbird\Profiles Default=1

[General] StartWithLastProfile=1 Version=2

"E:\Thunderbird\" is the correct location of my TB installation. In that directory is a profile.ini file that contains:

[General] StartWithLastProfile=1

[Profile0] Name=default IsRelative=1 Path=Profiles/<user_ID>.default

Directory "E:\Thunderbird\Profiles\<user_ID>.default" is present. But all of it's files are dated 2010 except Mail, dated 2016.

Directory "E:\Thunderbird\Profiles" contains the ImapMail and Mail sub directories totaling about 25GB data.

I don't know what the Thunderbird startup process is or if this all looks correct. Can someone give me a sanity check? If this looks normal, what else could be corrupted?

Thanks in advance.