KB923105 - How to determine which version of Microsoft Operations Manager you are running
This article was published on how to determine the MOM version you are running https://support.microsoft.com/?id=923105
In brief, the build numbers for MOM releases are:
| • | MOM 2005 Service Pack 1: 5.0.2911.0 |
| • | MOM 2005: 5.0.2749.0 |
| • | MOM 2000 Service Pack 1: 4.00.1300 |
| • | MOM 2000: 4.00.0.066 |