Err_auth_cert after updates from installshield and windows updates

[dpoo_joy]

Hi, I'm at the end of the rope here. After installing an update from installshield and windows, I was not able to access Google Chrome browser. It gives me an error message as folllows: err_cert_authority_invalidYouTube and Google was working minutes before doing the update. I tried several methods found online without success. Please help!

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