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MacOS Certificate Errors

"This certificate was signed by an untrusted issuer"

Beginning in September, 2010 we started having Safari and Chrome browser errors when people connected to https://confluence.slac.stanford.edu. We have found the fix for this issue is to download the newest Thawte Root certs. Please follow these steps to fix the issue:

• Open Applications; Utilities; Keychain Access

• Select Certificates in the Category menu.

• With your browser, go to: https://www.thawte.com/roots/index.html

• Click on "Download a root package" with all the Thawte roots.

• Expand the zip file you downloaded and then select the Thawte Premium Server CA.cer certificate and drag it into the Certificates window in your Keychain Access application.

• You will be asked if you want to Always Trust this issuer and you should do so.

• You should be prompted for your computer administrator password.