Situation: The client has an Azure AD DirSync server version 1.1.819.0 running on Windows server 2012 r2. After installing the latest cumulative Windows Update patch, the server is experiencing high CPU issues being used by the “Azure AD Connect Health Sync Monitor”
Resolutions 1. Install the latest version (1.1.880.0) of Microsoft Azure Active Directory Connect.
2. If for some reasons you can’t install the new version, stop the Azure AD Connect Health Sync Monitor Service. Here is how:
- Click on Start and search for Services
- Find the Azure AD Connect Health Sync Monitor service
- Right click on it and click Stop
- Right click on the same service and go to Properties
- Change the Startup Type to Manual.
3. Uninstall the KB4338814 Windows Update. The next option is to uninstall the Windows Updates that caused the problem. In my case, it was the KB4338814 “2018-07 Cumulative Update for Windows Server”. Some other people have reported success by uninstalling any or all of these updates: KB4103725, KB4096417, KB4095875, KB4054566, KB4338815, KB4338419, KB4340558, KB4338605, KB4339093, KB4340006, or KB4338824.
•Click on Start and go to Settings
•Go to Windows Update
•Go to Update History
•Click on Uninstall Updates
•Find the KB updates you want to uninstall
•Click on the update then click Uninstall
Uninstall .NET Framework 4.7.2 Update
