It’s a long time I wonder how to discover the list of installed updates in a SharePoint farm. Unfortunately not all updates are listed in the server’s control panel “view installed updates” page. This is bad because more than once it happened that I had to scale out a farm and there was no documentation at all.
I spent some time searching for how to get this list using Windows Powershell, but all I found out is that it seems that is not possible to get it (or no one did this before – or I did not search using the right keywords :)). I found lot of scripts but none of them did what I was looking for, the list of CU’s and hotfix installed on the farm. (more…)