Trying to run the Group Policy Results Wizard in SBS 2003 from the server to a remote PC gives the following error message:
Group Policy Error
Failed to connect to <computername> due to the error listedbelow. Ensure that the Windows ManagementInstrumentation (WMI) service is enabled on thetarget computer, and consult the event log of thetarget computer for further details.
Details: the RPC server is unavailable.
Needless to say, WMI and RPC server are both running on the target computer and the event log contains no entries.
The Microsoft solution is to enable "Allow Remote Administration Exceptions" in the Small Business Server Windows Firewall GPO (Computer Configuration | Administrative Templates | Network | Network Connections | Windows Firewall | Domain Profile).
Naturally this doesn't help any. A helpful post by DonL on Microsoft's public SBS newsgroup gives the fix:
The RPC port 135 is being blocked - by the Microsoft Firewall Client for ISA 2004. To unblock, do the following:Go to ISA Server Management Browse to "Firewall Policy" Select "Edit System Policy" Browse to "Active Directory" under "Authentication Services" Uncheck the box titled "Enforce strict RPC compliance" Click OK Apply the new settings
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