[John]

I have a number of WinXP machines reporting this error:

The kerberos subsystem encountered a PAC verification failure. This
indicates that the PAC from the client %machinename%$ in realm %DOMAINNAME%
had a PAC which failed to verify or was modified. Contact your system
administrator.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.

Does anyone know where to start troubleshooting

[Richard G. Harper]

Did you try following the "more information" link?

See if this applies:

http://support.microsoft.com/default.aspx?scid=kb;en-us;883268

--
Richard G. Harper [MVP Shell/User] rgharper@gmail.com
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"John" <John@discussions.microsoft.com> wrote in message
news:883BD1EF-D7F4-49F1-88C3-C93D1F776373@microsoft.com...
>I have a number of WinXP machines reporting this error:
>
> The kerberos subsystem encountered a PAC verification failure. This
> indicates that the PAC from the client %machinename%$ in realm
> %DOMAINNAME%
> had a PAC which failed to verify or was modified. Contact your system
> administrator.
>
> For more information, see Help and Support Center at
> http://go.microsoft.com/fwlink/events.asp.
>
> Does anyone know where to start troubleshooting