Quick little tip on SCCM 2007 – if you see the following messages in your SMS_MP_CONTROL_MANAGER component of the SCCM server, here’s the fix.
MP has rejected a policy request from GUID:XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX because it was not approved. The operating system reported error 2147942405: Access is denied.
SOLUTION: Open SQL Management Studio and run the following query on your SMS database:
select SMS_Unique_Identifier0, Name0 from V_R_System where SMS_Unique_Identifier0 = ‘GUID:XXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX’
This will show you your problem client. You can then follow the standard processes for approving a client – most easily right clicking after searching in the collections, and approving. Some times this may work and a re-install of the SCCM client may be necessary. Hope this helps.