How to tell which version of Update Rollup you have installed?

As we have released Exchange 2007 SP1 Update Rollup 4 on Microsoft Update two days ago, a question came up: how do you tell which version of the Update Rollup is installed?

The simplest answer is to go to Add or Remove Programs Control Panel applet. Then:

1. Make sure that "Show updates" checkbox is checked
2. Click on the Update Rollup that you are trying to figure out version information for
3. Click on the "Click here for support information" link

The version will be displayed like this:

This applies to pretty much all other updates too, Exchange related or not.

- Nino Bilic