Check Exchange Server Patch Level

Source: http://serverfault.com/questions/448827/how-do-i-determine-the-sp-and-rollup-version-of-an-exchange-installation

Slow method

Open "Programs and Features", select view updates, and search for the relevant Exchange 2010 patch.

Fast method

Run this command in Powershell

 gcm exsetup | %{$_.fileversioninfo}

Then use this URL to decipher the version number:

http://social.technet.microsoft.com/wiki/contents/articles/240.exchange-server-and-update-rollups-build-numbers-en-us.aspx




Source: http://serverfault.com/questions/448827/how-do-i-determine-the-sp-and-rollup-version-of-an-exchange-installation