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OsamaMansoor-3160 asked OsamaMansoor-7723 answered

Event id 5120 - STATUS_CONNECTION_DISCONNECTED(c0000020c)

Hi,

Today faced below Warning on Three nodes Windows Server 2019 Hyper-V Cluster

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I had checked with the server and storage vendor and found no issue at this time period.

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ElevenYu-MSFT avatar image
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ElevenYu-MSFT answered

Hi,

Thank you for posting the issue to Q&A forum.

The warning might occur if you have unused but active network-adapters. You can check and disable the useless Adapter to see if the warning will not reoccur.

For your reference:
FailoverCluster: EventID 5120 - STATUS CONNECTION DISCONNECTED(c000020c)

You can also read below articles for reference to troubleshoot the 5120 event.
Unable to access ClusterStorage folder on a passive node in a server cluster
Troubleshooting Cluster Shared Volume Auto-Pauses – Event 5120


Thanks,


If the Answer is helpful, please click "Accept Answer" and upvote it. Thanks.

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OsamaMansoor-3160 answered

Hi @ElevenYu-MSFT

In a server, there are 4 Adapters and are part of two different NIC teams.One is used for LAN traffic and one is used for a heartbeat for a cluster

As per below link not found any relevant Event id but found some others are they important?

http://wiki.webperfect.ch/index.php?title=FailoverCluster:EventID_5120-_STATUS_CONNECTION_DISCONNECTED(c000020c)

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OsamaMansoor-7723 answered

Can someone please help

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