SCCM 2012 R2 Clients are not retrieving policy

Question

Hi - I know this question has been asked many times before - but I have tried almost everything and a no closer to solving the problem.
Background: Recently a SCCM 2012 SP1 single stand-alone site was upgraded to SCCM 2012 R2. The site is a single stand-alone primary site with a single DP, single MP, using mixed mode
(HTTP). The R2 upgrade ran without any problem and all SCCM components are showing as healthy.
A few test SCCM 2012 SP1 clients were upgraded to the R2 client using client-push.
However the upgraded clients are not retrieving policy from the Management Point. In the Actions Tab of the SCCM client, only Machine Policy Retrieval and User Policy Retrieval are available. But kicking of those actions does not
result in any of the advertised applications, Task Sequences becoming available. Infact Custom Client Settings are not being set either (e.g. Organisation Name in software Center).
I have checked and rechecked the following:
The upgrade of the client completed successfully (checked ccmsetup.log) and the version number went from 5.00.7804.1000 (SP1) to 5.00.7958.1000 (R2).
The MP health in the SCCM console is showing healthy.
The MP access URL's load correctly when run from SCCm client computers
“http://<ServerName>/sms_mp/.sms_aut?mplist” is ok
“http://<ServerName>/sms_mp/.sms_aut?mpcert” is ok
The SCCM clients are assigned to the site correctly – verified via the SCCM client and
ClientLocation.Log
ClientIDManager.Log is not showing any errors
CCMExec.log and ExecMgr.log don't show any advertisements being executed (Execmgr.log is almost empty and only has "Software ditrbution site settings policy does not yet exist on the client). If the client is not yest
registered this is expected behaviour")
The SCCM clients are Approved and NOT Blocked in SCCM
I have attempted to upgrade the SCCM client and also completely removed and reinstalled - and both have the same result (no client policy dpwnloaded)
I have also deleted the above clients completely from SCCM, Run divoery again and pushed the client to the machines again ...with the same result (SCCM client installs, assigns to correct site and then no policy downloaded)
SCCM 2012 Boundaries are configured correctly and assigned to Boundary Groups correctly
The SCCM client’s do not have the firewall enabled
Changed boundary from AD Site to Subnet to IP Address Range: Same issue exists
Uninstalled MP role and reinstalled it: same Issue exists
Tried to connect to SCCm client using 3rd party SCCM Client center tool but cannot connect
??? Not sure what else to try ???

Answer 1

Hi all - sorry for the late response.
We managed to resolve the issue after logging a job with Microsoft Support.
The issue was that the SCCM 2012 R2 upgrade corrupted 2 tables in the SCCM Database - leading to corrupt SCCM client policies.
I am pasting the resolution email from Microsoft below:
(NOTE: This may not be the exact sypmtoms you are experiencing so do not implement this fix assuming it will fix your problem!)
ISSUE: 
- All clients are unable to download policies from the server
CAUSE:
- Bad policies in the Database
RESOLUTION: 
-Issue with PADbID - Run below query against SCCM DB to verify corrupt entries:
SELECT * FROM
ResPolicyMap WHERE machineid = 0 and PADBID IN (SELECT PADBID FROM PolicyAssignment WHERE BodyHash IS NULL)
Confirmed Bad policies entries in the SCCM database
Run below query to delete the bad policy after which we resolved the issue:
Delete FROM ResPolicyMap
WHERE machineid = 0 and PADBID IN (SELECT PADBID FROM PolicyAssignment WHERE BodyHash IS NULL)"