In ConfigMgr Current Branch, version 1511/1602 you have a new pre-production client upgrade feature that allows you to test the new client install on a pre-preproduction collection. The feature works like a charm and allows you to gain control over the upgrade process by testing first. However, while testing the new client, you might run into client installation issues if you are installing a new client on a Management Point.
In ccmsetup.log on the management point you will see errors stating that “The client version 5.00.8325.1000 does not match the MP version 5.00.8355.1000. The client will not be installed.”
The fix is easy, the only question is - if you are ready. Configure you the client install options to deploy to production instead of the pre-production collection. That can be done from Cloud Services, Updates and Servicing. You’ll notice in the illustration below that Client Update Options is still in pre-production (if it was not, the option would be grayed out).
Click Client Update options and enable I’m ready……
After that, time to spend a few seconds in cmtrace reading hman.log (on the site server). Notice that both the preproduction and production packages are impacted by your recent change. Look for the line Loaded client upgrade settings from DB successfully. FullClientPackageID=PS100002, StagingClientPackageID=PS100007, ClientUpgradePackageID=PS100003, PilotingUpgradePackageID=PS100008, ClientUpgradeAdvertisementID=PS120000, ClientPilotingAdvertisementID=PS120003
After the upgrade, your management point will successfully install.