SCCM

This morning, I noticed in our SCCM Primary server, all components Type and Availability shows “Unknown” After awhile, “Type” and “Availability” shows correctly, about 60 minutes later, it shows “Unknown” again, and it just repeatedly changes itself. We rebooted the server, but it didn’t help. Investigating further, I saw that the compmon.log on the site server displayed the following errors: “Failed to read the required Operations Management component registry key values on local computer; error… 

NOTE: the KB has been updated with a workaround for this issue https://support.microsoft.com/en-us/kb/3155482 Lovely weekend, upgraded from SCCM 2012 R2 SP1 CU2 to 1511, then 1602, then hotfix KB3155482. At the end, we end up exectly like this, Client Upgrade shows old client version numbers, and SCCM Client package is not updated. https://social.technet.microsoft.com/Forums/en-US/d8f01d28-e21a-49cd-80b7-a0cba6a200ca/1511-client-after-1602-kb3155482-upgrade?forum=ConfigMgrCBGeneral Big thanks for Niall Brady ‘s windows-noob Facebook group, Anderz Wedefelt point me out technet forum has same discussion of this matter, –Marc–  has reported as bug…