Firefox throws Secure Connection Failed for many Microsoft domains (Fix)

Discussion in 'Tech news' started by RGiskardR, May 30, 2017.

  1. RGiskardR

    RGiskardR Malware Tester Silver Member

    When you try to connect select Microsoft owned domains such as or right now in Firefox, you may get a Secure Connection Failed error.

    Sites that are affected by the issue include the following domains:,,,,,

    In fact, it appears that the majority of Microsoft owned domains are affected by the issue. Only some sites are not.

    The error reads:

    Secure Connection Failed

    An error occurred during a connection to Invalid OCSP signing certificate in OCSP response. Error code: SEC_ERROR_OCSP_INVALID_SIGNING_CERT

    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 you try to load the site in another web browser, say Google Chrome or Internet Explorer, it loads fine and without any issues.

    Full source:
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