Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, 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.
Archived

Frickin' Please ... I doubt that Hotmail is such a high security risk that you're blocking it.

Firefox Troubleshooting
philipp replied
Abouttoloseanotheruser
Abouttoloseanotheruser

There is no reason for this:

SEC_ERROR_OCSP_INVALID_SIGNING_CERT

To be blocking frickin' Hotmail. There's no man-in-the-middle or other exploit here either. You need to fix your stuff or explain why, and allow overrides when you're clearly screwed up.

There is no reason for this: SEC_ERROR_OCSP_INVALID_SIGNING_CERT To be blocking frickin' Hotmail. There's no man-in-the-middle or other exploit here either. You need to fix your stuff or explain why, and allow overrides when you're clearly screwed up.

All Replies (1)

philipp
philipp
  • Moderator

hi, unfortunately MS has misconfigured a security feature (OCSP stapling) on their servers which got now cached in your local firefox installation.

in order to resolve that, please enter about:config into the firefox address bar (confirm the info message in case it shows up) & search for the preference named security.ssl.enable_ocsp_stapling. double-click it and change its value to false - this will degrade a security feature in firefox, so please revisit it in a couple of days again after microsoft has fixed their stuff and turn it back on again then...