I keep getting "the certificate for this server is invalid" for all SSL web sites.

Since the upgrade to Mac OS Sierra I get certificate errors on my Mac Pro to the end of 2013.  It will work fine right after a reboot, but then it will start refusing to open all web sites that use SSL.  In this case until I restart, then it kinda good.

I thought it was some kind of problem caused by the application of update after update to the Member, then I've completely erased from the hard drive and reinstalled Sierra fresh. And now the issue of the certificate is back.

Anyone else having issues like this?  Anyone know of a fix?

Do you have a third party anti virus or other applications that claim to protect, manage, clean, etc. from your computer? If so, uninstall them. Do you get the same message when you are using another browser?

Tags: Mac OS & System Software

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