Problem: Rebooted my Exchange 2010 server and when it came back up the information store wouldn’t mount. Looked in the application log and found the following error:
Unable to initialize the Information Store service because the clocks on the client and server are skewed. This may be caused by a time change either in the client or the server, and may require a reboot of that computer. Verify that your domain is properly configured and is currently online.
Found some instructions on the technet website that fixed my problem.
- Open a cmd prompt from the Exchange Server as administrator (right mouse click on the command prompt shortcut and select Run as Administrator)
- Run this command Net time \\ADServerName /Set
- Restart the Microsoft Exchange Active Directory Topology Service
*Important!! You have to restart the Microsoft Exchange Active Directory Topology Service or this fix will not work.. I tried just starting the Information Store service after running the command it it still failed..
Further reference: Technet