How to Remove Certificates Imported with MOMCertImport
Use the following procedure to remove certificates that have been imported using the MOMCertImport tool.
To remove certificates imported with the MOMCertImport tool
Log on to the computer with an account that is a member of the Administrators group.
On the Windows desktop, click Start, and then click Run.
In the Run dialog box, type cmd, and then click OK.
At the command prompt, type <drive_letter>: (where <drive_letter> is the drive where the System Center 2012 – Operations Manager installation media is located), and then press ENTER.
Type cd\SupportTools\amd64 and then press ENTER.
Type the following:
MOMCertImport /Remove, and then press ENTER.