How do I determine the SP version number and Rollup version of an Exchange installation?
Open "Programs and Features", select view updates, and search for the relevant Exchange 2010 patch.
Run this command in Powershell
Then use this URL to decipher the version number:
I created a PowerShell function to retrieve the proper version information for Exchange 2007, 2010 and 2013. My blog post includes the code and some usage examples. Since the function is over 200 lines, I will not include it here. The following is some sample usage and output of the function:
Get Installed Updates (Cumulative and Update Rollups) for a Single Server
Output All Exchange Server Object Properties with Installed Updates