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PR_CONNECT_RESET_ERROR since newest version of Firefox 91.0

Since I updated to Firefox v.91.0 I get this error: Secure Connection Failed An error occurred during a connection to support.mozilla.org. PR_CONNECT_RESET_ERROR … (read more)

Since I updated to Firefox v.91.0 I get this error:

Secure Connection Failed

  • The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
  • Please contact the website owners to inform them of this problem.

when ever I try to connect to websites via Firefox only. I've tried many things like reinstalling Firefox and I know its an issue between Firefox and my Antivirus (Kaspersky,) but this didn't happen before Firefox updated to v.19.0 though. I've tried https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can and many other things but nothing works to fix it. I've switched certificate stores and other 'fixes' I've read on this website and others to no avail. It does this with or without any extensions in Firefox.

This only started when I updated Firefox to version 91.0. It doesn't give an errors/issues on any other browser I've tried so far (MS Edge and Chrome) so must be something with the version 91.0 update?

Any ideas to fix this would be great. Thanks!

Asked by Icarus 1 year ago

Answered by Icarus 1 year ago

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Thunderbird 78.6.0

Thunderbird 78.6 (32x) Windows 10 Pro 20H2 Today I stumbled with a problem, this was not the case before. File extensions for Documents attached to an incoming letter are… (read more)

Thunderbird 78.6 (32x) Windows 10 Pro 20H2 Today I stumbled with a problem, this was not the case before. File extensions for Documents attached to an incoming letter are truncated. So for the Excel file, the extension is .xls_ instead of .xlsx As a result, the document does not tear off. You need to save the file, change the extension in the explorer, only then you can open it. Can someone help solve this problem?

Asked by Aiyva 1 year ago

Answered by sfhowes 1 year ago