Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Unable to write email to mailbox

bob stewart
bob stewart
more options

Hello- 

  I recently updated Thunderbird and now I am getting the error message, "Unable to write email to mailbox...". On top of that, when I click the OK button the error window doesn't go away and will not let me use any part of Thunderbird. I have to use Task Manager to close down TB.
 I suspect it is the new update 102.0.1. How can I go back to the last one, 91.10.0 where everything worked?

Thanks, Bob

Hello- I recently updated Thunderbird and now I am getting the error message, "Unable to write email to mailbox...". On top of that, when I click the OK button the error window doesn't go away and will not let me use any part of Thunderbird. I have to use Task Manager to close down TB. I suspect it is the new update 102.0.1. How can I go back to the last one, 91.10.0 where everything worked? Thanks, Bob
Attached screenshots

Chosen solution

It looks like update 102.0.2 took care of the problem. All better now.

Read this answer in context 👍 0

All Replies (1)

bob stewart
bob stewart Question owner
more options

Chosen Solution

It looks like update 102.0.2 took care of the problem. All better now.