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

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

Thunderbird Error: Platform version "115.3.1" is not compatible with minVersion >= 115.4.0

  • 2 àwọn èsì
  • 0 ní àwọn ìṣòro yìí
  • 325 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ Sillycat41

Two days ago T-bird offered an update and this error message popped up.

Thunderbird Error: Platform version "115.3.1" is not compatible with minVersion >= 115.4.0

I found instructions to download and reinstall T-bird. When I did that there was a question about okaying a certificate with a warning. I chose not to do that because it sounded like it wasn't safe. T-bird wouldn't open and the same error message came up again.

How can I get T-bird to work and save my email??? Will Windows 10 System Restore take me back to when T-bird worked??? Help!!

Two days ago T-bird offered an update and this error message popped up. '''Thunderbird Error: Platform version "115.3.1" is not compatible with minVersion >= 115.4.0''' I found instructions to download and reinstall T-bird. When I did that there was a question about okaying a certificate with a warning. I chose not to do that because it sounded like it wasn't safe. T-bird wouldn't open and the same error message came up again. How can I get T-bird to work and save my email??? Will Windows 10 System Restore take me back to when T-bird worked??? Help!!

Ọ̀nà àbáyọ tí a yàn

just download from Thunderbird.net and reinstall. That has been a sure fire fix for those platform issues for the last 10 years.

Ka ìdáhùn ni ìṣètò kíkà 👍 0

All Replies (2)

Ọ̀nà àbáyọ Tí a Yàn

just download from Thunderbird.net and reinstall. That has been a sure fire fix for those platform issues for the last 10 years.

Yeah, I have reinstalled T-bird several times over the years to fix problems, but this time it didn't work... came up with that message about a certificate. Ran the exe setup again and the certificate message didn't come up and it finished. Weird. Thanks for responding.