During the installation of Forefront Endpoint Protection 2010 there is a prerequisite verification step. Most were fairly easy to resolve except for the SQL one
Checking the details for the failure you get:
"Setup cannot verify the service principal name (SPN) for this account. Ensure that there is a single valid SPN entry for this account in the Active Directory Domain Services.
Launch a command prompt as administrator
Execute the following:
setspn -a mssqlsvc/accountname yourdomain\accountname
You should see an updated object line confirming that the change was successful
To verify that the SPN was added correctly execute:
setspn -l yourdomain\accountname
The prerequisite check should now complete without errors and you can proceed with the installation.
setspn -a MSOLAPSvc.3/accountname yourdomain\accountname