What does SEC_ERROR_OCSP_INVALID_SIGNING_CERT mean and what do I do to correct it please?
The above message has just started showing this morning when I try to get onto my emails etc. How do I get round this please?
I would be grateful if you could answer in laymen's terms and not be too technical so that I can understand it please!
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Hi !
Since last night this looks like an epidemic - this is a misconfiguration on microsoft's server side.
If you want to, you can disable OCSP (which is a security mechanism) :
3-bar menu (the three horizontal lines in the upper right corner, right under the closing X) => Advanced => Certificates panel
And Let's keep our fingers crossed that Microsoft will fix the issue soon.
Another way to disable OCSP (for now) : Type in the address bar about:config (press Enter) (promise to be careful, if asked) Type and look for the preference : security.ssl.enable_ocsp_stapling and set it's value to false
It is best to reset this pref via the right-click context menu to true once you are done with this website.