SCOM: Incorrect rollup state issue

Actually I don't want to make this blog as an issue list of SCOM but...another issue which you should know - especially because workaround is already found. :)

Sometimes you can see that your rollup monitor (dependency or aggregate) doesn't change its state to correct one after all nested monitors already green. Sometimes you can wait about 2 minutes and correct state appears...sometimes you need to reset health of this monitor manually or reset Health Service (ouch really strong and ugly way).

Bad news - it's a SCOM issue and you can't prevent yourself or your MP users from this case.
Good news - Microsoft PFE Daniel Mueller found a workaround which is really better because prevent your from any "hacky" actions on your SCOM environment.
So follow this link and enjoy this workaround!

Good luck!