How we upgrade 300k ConfigMgr clients in 10 days

Hi Andy.

You are exactly correct on the shared accountability.  I was recently in a conversation in our org where folks were talking about how another process could "fix" ConfigMgr client health better than ConfigMgr.  I had to point out that the same process couldn't "fix" itself, but ConfigMgr could.  There is a lot of confusion in the client health space and what it takes to "fix the fixer" since more powerful software has more dependencies to keep it functional.

On a related note, if you have a Microsoft Premier support agreement I suggest you check out the PFE client health offering (https://blogs.technet.microsoft.com/michaelgriswold/2011/12/16/find-and-fix-those-unhealthy-clients/).