Although the installation of Exchange server 2013 CU3 is simple few steps needs to be consider while deploying.
- Restart the exchange server before deploying the patch – This will let’s the other user’s session will be dropped and also if there is any pending restart will get cleared off
- There are several places a restart flag could be squirreled. This is not an exhaustive list:
- Look at HKLM\SYSTEM\CurrentControlSet\Control\Session Manager
- PendingFileRenameOperations
- Use Sysinternals Pendmoves.exe to see if there are pending operations
- HKLM\Software\Microsoft\Windows\CurrentVersion\Component Based Servicing
- RebootPending
- When you are installing using command prompt don’t use exchange management PowerShell instead use the windows PowerShell. Open the windows PowerShell using “Run As” and type the username and credential that holds admin privilege
- In Exchange 2013 it is mandatory to accept the license agreement - /IAcceptExchangeServerLicenseTerms
- After Exchange 2013 Cumulative Update 3 installation we will not able to revert back
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