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Google related pages wont open with sec_error_unkown_issuer

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  • Last reply by cor-el

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Hi Google and any related pages like youtube wont open on my computer anymore for no actual reason. One day in the morning everything still worked fine then later the same day i keep getting the message that it does not wanns try to connect to the page and with the error sec_error_unkown_issuer I read i should check my computer time which i did everything is correct i even changed it multiple times with no success. can you tell me what the problem is. Thanks and regards Nicolas

Hi Google and any related pages like youtube wont open on my computer anymore for no actual reason. One day in the morning everything still worked fine then later the same day i keep getting the message that it does not wanns try to connect to the page and with the error sec_error_unkown_issuer I read i should check my computer time which i did everything is correct i even changed it multiple times with no success. can you tell me what the problem is. Thanks and regards Nicolas

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Are you using a proxy or VPN?

You can check the connection settings.

  • Settings -> General -> Network: Connection -> Settings

If you do not need to use a proxy to connect to internet, select "No Proxy" if "Use the system proxy settings" or one of the of the others do not work properly.

See "Firefox connection settings":