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Error code: SEC_ERROR_OCSP_INVALID_SIGNING_CERT >> Whats going on i cannot access Outlook Hotmail & are not receiving E-mails from Firefox to verify my account

  • 4 replies
  • 33 have this problem
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  • Last reply by garrywm30

garrywm30
garrywm30
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I cannot access Outlook Hotmail via firefox ? { Error code: SEC_ERROR_OCSP_INVALID_SIGNING_CERT } started 28/5/17 . Also am Not receiving Mozilla Firefox Verification E-Mails in my hotmail address . Have checked Spam and inbox nothing happening ?

I cannot access Outlook Hotmail via firefox ? { Error code: SEC_ERROR_OCSP_INVALID_SIGNING_CERT } started 28/5/17 . Also am Not receiving Mozilla Firefox Verification E-Mails in my hotmail address . Have checked Spam and inbox nothing happening ?

Chosen solution

hey, it's about:config with a colon (see screenshots).

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All Replies (4)

philipp
philipp
  • Moderator
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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...

garrywm30
garrywm30 Question owner
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When I enter About.config into address bar there are no preference settings showing . Ie do I have another way to get to security.ssl.enable_ocsp_stapling. Step by step would be good .

philipp
philipp
  • Moderator
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Chosen Solution

hey, it's about:config with a colon (see screenshots).

garrywm30
garrywm30 Question owner
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Thank you that fixed it .