IIS 7 and Above
IISRESET results in W3SVC stuck in stopping status after July 2018 pa...
Re: IISReset Issues after July 2018 Patches
Jul 16, 2018 08:39 PM|mb300sd|LINK
This update was definitely also causing the Exchange issue, which to me seems like a bigger problem than not being able to restart IIS. The transport service would randomly stop accepting connections and required a reboot of the server before it started
working again. All fixed after uninstalling KB4338818. Perhaps also get in contact with that team.