How to Fix “SEC_ERROR_OCSP_FUTURE_RESPONSE” Error in FireFox or Opera

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    Some firefox user’s report the SEC_ERROR_OCSP_FUTURE_RESPONSE error while opening a webpage in Firefox or Opera. The SEC_ERROR_OCSP_FUTURE_RESPONSE error in Firefox or Opera has nothing to do with security settings and it is not related to the web browser at all. The SEC_ERROR_OCSP_FUTURE_RESPONSE error occurs due to a misconfiguration in the device’s time and date settings. Firefox throws up the SEC_ERROR_OCSP_FUTURE_RESPONSE error when the time and date settings or not correctly configured. In this article, I’ll show you how to easily fix the SEC_ERROR_OCSP_FUTURE_RESPONSE firefox and opera web browser error.

    Secure Connection Failed

    An error occurred during a connection to. The OCSP response is not yet valid (contains a date in the future). Error code: SEC_ERROR_OCSP_FUTURE_RESPONSE 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.


    Fix SEC_ERROR_OCSP_FUTURE_RESPONSE error Firefox and Opera

    Open windows control panel, go to Clock, Language, and Region.

    windows control panel

    Go to set time and date.

    set time and date firefox

    Open change date and time settings as Administrator.

    change date and time settings SEC_ERROR_OCSP_FUTURE_RESPONSE firefox error

    Provide the correct date and time settings, restart Firefox for the changes to take effect.

    date time change date and time settings SEC_ERROR_OCSP_FUTURE_RESPONSE firefox error

    Once the correct date and time settings are provided the SEC_ERROR_OCSP_FUTURE_RESPONSE error in Firefox or Opera will disappear. Easy fix!


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    1. Thank you! I was able to download Mozilla with this fix.
      I also have a message that my windows 7 is counterfeit. The download was from Microsoft & the windows 7 key was purchased on Ebay. What can I do? I have a windows 7 disk & key from an old desk top that I no longer own. Could I use that and start over clean?


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