Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Open

Thunderbird is freezing up after a few minutes or when I try to select a folder.

G Andrew Wernham

I believe with Update 154,0 my thunderbird has been freezing up. I can't see, to compress files or select some folders. After a few minutes everything freezes up. 21 AUGUST 2026

[redacted] @gmail.com


/edit: unlocked as other was made as duplicate.

I believe with Update 154,0 my thunderbird has been freezing up. I can't see, to compress files or select some folders. After a few minutes everything freezes up. 21 AUGUST 2026 [redacted] @gmail.com /edit: unlocked as other was made as duplicate.

Modified by Wayne Mery

All Replies (3)

What is your anti-virus software?

Norton 360, Superantispyware. Whatever comes with Windows 11.

These are some generic suggestions to avoid problems with anti-virus software.

Create an exception in your anti-virus software for the Thunderbird profile folder, so that the anti-virus real-time scanner will not scan it. https://support.mozilla.org/en-US/kb/profiles-where-thunderbird-stores-user-data#w_how-to-find-your-profile

Don't let your anti-virus software scan incoming and outgoing messages.

Don't let your anti-virus software scan attachments.

Don't let your anti-virus software intercept your secure connection to the server.

Remove any add-ons your anti-virus software may have installed in Thunderbird.

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.