Message migrated from Groupwise to Exchange have a resultant timestamp difference.
- Source message time: 12:00
- Migrated message time: 1:00 PM
The source, migration, and target machine may all have the exact and correct time with all the same regional settings.
The cause can be due to different registry setting for the time service. It can also be previous settings applied by group policy. These full settings can be viewed in the REG key:
HKLM\SYSTEM\Current control set\services\W32Time
We need to re-install and re-register the Windows Time Service w32time.
To do this complete the following via the command prompt:
- net stop w32time
- w32tm /unregister
- w32tm /register
- net start w32time