Why doesn Kerberos work?
The most common reason why Kerberos doesn’t work on a computer is the computer time setting. Kerberos puts expiration times on everything and requires that your computer’s clock is accurate. It must be within five minutes of the clock on the Kerberos servers. Most operating systems now support some way to set the system clock automatically from a central time server. If your system is on the Stanford campus network, you can use time.stanford.edu as the time server. For other problems with Kerberos on your system, submit a HelpSU request.
