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
Archived

Solution for Thunderbird crashes/freezes

yorck001

I had a problem with Thunderbird for weeks after an upgrade from WIN 8.1 to WIN 10. The symptoms were just like those described in many posts. Thunderbirds starts normal but after clicking any button it becomes unresponsive. No error message or anything. It took usually 2 minutes before it 'cleared', was than working fine for a few minutes and bang- it happened again.

After a little research I found out that in some instances, after the WIN upgrade, multiple unnecessary 'MSF' files were in my Thunderbird profile folder. A simple free tool called Thunderfix helped me out of the misery. Now everything is fine and works as it should. I do not have any vast interest in promoting this tool or the developer, just wanted to share the solution I found. This is the link for the tool.

http://www.parhelia-tools.com/products/thunderfix/thunderfix.aspx

I had a problem with Thunderbird for weeks after an upgrade from WIN 8.1 to WIN 10. The symptoms were just like those described in many posts. Thunderbirds starts normal but after clicking any button it becomes unresponsive. No error message or anything. It took usually 2 minutes before it 'cleared', was than working fine for a few minutes and bang- it happened again. After a little research I found out that in some instances, after the WIN upgrade, multiple unnecessary 'MSF' files were in my Thunderbird profile folder. A simple free tool called Thunderfix helped me out of the misery. Now everything is fine and works as it should. I do not have any vast interest in promoting this tool or the developer, just wanted to share the solution I found. This is the link for the tool. http://www.parhelia-tools.com/products/thunderfix/thunderfix.aspx

All Replies (1)

that "tool" simply deletes all the MSF files in your profile. Not really a tool. I would be more interested in these "multiple unnecessary 'MSF' files were in my Thunderbird profile" what extra ones did you have?