Agents/Servers Missing in Windows Server Operating System State

Hasan Bin Hasib 0 Reputation points

Hello Everyone!

Environment: SCOM 2022 (without any UR)

In the Administration > Device Management > Agent Managed > shows 80 agents

In the Administration > Operations Manager Products > Agents > shows 80 agents

In the Monitoring > Microsoft Windows Server > Windows Server State > shows 80 servers

In the Monitoring > Microsoft Windows Server > Windows Server Operating System State > shows only 15 servers


Resultantly, SCOM is not generating alerts for those 65 servers that are not appearing under the Windows Server Operating System State.

When I go to Monitors and try to configure an Override for a specific object under the class of that monitor, there also it shows only 15 servers...

Will be grateful for any leads.

Operations Manager
Operations Manager
A family of System Center products that provide infrastructure monitoring, help ensure the predictable performance and availability of vital applications, and offer comprehensive monitoring for datacenters and cloud, both private and public.
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Microsoft System Center
Microsoft System Center
A suite of Microsoft systems management products that offer solutions for managing datacenter resources, private clouds, and client devices.
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  1. XinGuo-MSFT 15,941 Reputation points


    Open the Operations console and select Monitoring. Navigate to the Operations Manager\Agent Details\Agent Health State view. In Agent State from Health Service Watcher, select the agent you want to check connectivity for.

    For network connections, please check if all agents are on the same subnet, are there any firewall?

    If the issue still exists, I recommend you try to reinstall an agent of those 65 servers to see if this agent show under the Windows Server Operating System State.

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  2. Bob Cornelissen 251 Reputation points MVP

    Sounds like OS discovery not working. Most other discoveries follow after that one.

    Could be OS packs not loaded correctly. Could be disabled discoveries. Could be the discovery can't run on the agent because it is denied. That last one could be due to... agent default run as account, group policies, WMI broken or access denied, or antivirus blocking.

    Restart the agent on a machine and look at eventvwr

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  3. Hasan Bin Hasib 0 Reputation points

    In Monitoring\Operations Manager\Agent Details\Agent Health State -> the server is shown as Healthy.

    Moreover, I have also deleted the cache by deleting the Health Service State folder but it did not help.

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