How to determine installed EUM version

The version of the installed EUM can be found out by someone having access to the server where the EUM is hosted.

You can do this by going to the Extranet_API_V4 Bin folder located at C:\inetpub\wwwroot\YourEUMInstall\Extranet_API_V4\bin. Right click on the EIT_MembershipUserMaintenance.dll and open up the dlls properties. Click the Details tab and note the File Version.