Question : Error when reading Event viewer security log

While logged in on W2K server w/Exchange 2k installed and working fine, all of a sudden I am unable to view my Security Log in event viewer.  All other logs are fine.

I receive a message "unable to complete the operation on "Security Log"
"A required privilege is required by the client"

What does this mean?  I trying logging on as administrator or exch admin and get the same message.  thanks.

Answer : Error when reading Event viewer security log

I see it fairly often when I log in as an administrator of a trusted domain, but not as an account which is defined explictly as the administrator on the machine I'm administring.  That probably doesn't help you though.

Something had to have changed... make certain your admin account is still actually a member of the admin group.  Check to see if it is a member of any OTHER groups, and make certain the other groups aren't denied permissions.

Make certain you still have permissions to c:\windows\system32\config.

Make certain the SecEvent.evt file isn't corrupt.  (I.e. Disable event log service, reboot, rename the file, reenable the event log service, reboot.)  See if you can see the Security Event Log now...