I'm getting an intermittent error when trying to access a SQL 2000 database with a Windows XP machine. This XP machine is authenticating to a 2000 DC. The error is a file access error and is as follows File (dbo.TApptNote) could not be opened. Error: Cannot generate SSPI context (S1000). Usually if the machine is rebooted the error will not occur when trying to access again, until later in the day. Any help would be greatly appreciated, thanks.