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
Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.
Okugcinwe kunqolobane

how do I undo the last update from yesterday which gave me version 143.0.1 64 bit winndows 11

info5413

how do I undo the last update from yesterday which gave me version 143.0.1 64 bit in windows 11 as it has corrupted my main email account?

how do I undo the last update from yesterday which gave me version 143.0.1 64 bit in windows 11 as it has corrupted my main email account?

Okulungisiwe ngu info5413

All Replies (2)

These are the steps, but I suggest NOT doing it:

 Exit Thunderbird if running.
   click windows key and 'r' key
   Enter: thunderbird.exe -P --allow-downgrade
   click on 'OK' 

Instead, I encourage posting more about your problem so someone here can possibly assist. My concern is that reverting to a prior release may cause further problems.

What exactly did you see that makes you think it is corrupt?