Fix issue with Azure AD/Office 365 sync hogging CPU resource on Server 2016 domain controller

IT Guy
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I have a Server 2016 Active Directory domain controller installed within a Server 2016 Hyper-V virtual machine that runs the Azure AD/Office 365 sync utility.

There is a constant issue where this Azure AD/Office 365 sync utility "Microsoft Online Reporting MonitoringAgent.Startup" utility consumes all of the CPU resources on this virtual server (see the screenshot).

I understand that this might be related to a .NET bug that Microsoft hasn't fixed yet.

All updates are installed on this Server 2016 server, its base server, and all other Hyper-V virtual servers.

The Hyper-V base server and all virtual machines are running on Solid State drives. The base server and all of the other virtual servers are operating just fine and don't have this issue with CPU utilization.

Currently, there are 4 virtual CPUs assigned to this virtual server (out of a total of 32 physical CPUs). It doesn't matter how many virtual CPUs I assign to this virtual server, this issue continues to occur when I have assigned 8, 12, or 16 virtual CPUs.

What can be done to fix this issue?

MS-Online-Reporting CPU hog
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Most Valuable Expert 2015
Distinguished Expert 2018
Commented:
There was a known issue with the previous version of AAD Connect and some windows updates. Update to the latest AAD Connect build: https://docs.microsoft.com/en-us/azure/active-directory/connect/active-directory-aadconnect-version-history#118800
Warwick ReimanSenior Systems Engineer

Commented:
Above is correct, came across this issue also with a customer. Need to update to latest version either by the website or turning on automatic upgrade azure connect settings..
IT GuyNetwork Engineer

Author

Commented:
What are the steps to turn on "automatic upgrade azure connect settings"?

I would rather that this upgrade be done automatically and that all future upgrades be done automatically without me having to do them manually.

Please provide me with the exact steps on how to do this.
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IT GuyNetwork Engineer

Author

Commented:
Alright, I have set it to Enabled.

Now how long will it take until it performs the first upgrade?

Is there any way I can make it perform the first upgrade right away instead of having to wait?

How can I determine what version I am running now?

What is the most recent version I can upgrade to?
Most Valuable Expert 2015
Distinguished Expert 2018

Commented:
Simply use the download link in the article I provided above to get the latest version, you dont have to wait for auto-upgrade.

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