Incorrect clock setting

Error in debug log file:

<time> (ESRI) Logfile switched from stdout

<time> (ESRI) The system clock has been set back to the past.

<time> (ESRI) This is not allowed!

<time> (ESRI) daemon shutdown requested - shutting down

Error from the command prompt:

FLEXlm Error: cannot connect to license server (15).

Program not run.

FLEXlm Error: Clock difference too large between client and server

Cause:

Note: The license manager respects and understands time zones. If the log shows the above error and starting ARC gives the above error, the server and client workstations may not have the same date or time. They must be in sync with Greenwich Mean Time. Up to four hours difference is allowed between the license server and client machines.

Solution: