FSSMC/FPFMC Error 500 when launching
If you have issues logging into any of the Forefront Management Consoles with an Error 500 you most likely changed the service account password.
To verify this is due to a password issue you can check the event logs for
Event ID 10004, Distributed COM
DCOM got error “1326” and was unable to logon <account name> in order to run the server:
{9738A91E-222B-4F3F-8962-6B01144D6ACB}
If that’s there you need to go into Com+ applications under component Services.
Get the properties of the MFSMC.Services object and change the password on the Identity page.
That should resolve the error.