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Firefox – sec_error_revoked_certificate Issue

When Firefox web browser checks a security certificate, it also checks with the issuing authority if the certificate is valid. It appears that, near a certificate’s expiration date, the issuing authority may release a new certificate. The two certificates have conflicting expiration dates.

For reasons unknown, this caused Firefox to report a sec_error_revoked_certificate error and refuse to allow you to connect to the site!

To resolve this, presumably at the same time reducing the security of your browsing, complete the following:

For PC Users:

  1. Open Firefox.
  2. Go to Tools the top menu and select Options.
  3. Click the Advance tab.
  4. Click the following button:
    Encryption, then
    Certificates, then
    Validation
  5. Check “Do not use OCSP for certificate validation.”
  6. Click OK and restart Firefox.

For Mac Users:

  1. Open Firefox.
  2. Go to Firefox in the top menu and select Preferences.
  3. Click the Advance button.
  4. Click the following buttons:
    Encryption, then
    Validation
  5. Un-check “Use the OCSP to confirm the validity of certificates.”
  6. Click OK and restart Firefox.