AUM "Schedule timedout waiting for an ongoing update to complete on the resource" Maintenance window is at maximum

Tomlinson, Mick 20 Reputation points
2025-06-24T10:30:02.9166667+00:00

AUM patching of arc enabled servers not completing. Maintenance windows at maximum 3 hrs 55 mins.

Error is "Schedule timedout waiting for an ongoing update to complete on the resource"

Can I increase the maintenance window beyond this limit or is there a work around please?

Azure Arc
Azure Arc
A Microsoft cloud service that enables deployment of Azure services across hybrid and multicloud environments.
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  1. Stanislav Zhelyazkov 28,986 Reputation points MVP Volunteer Moderator
    2025-06-24T10:40:47.2466667+00:00

    Hi,

    The limit cannot be increased beyond the maximum. If this is caused by having multiple updates and they cannot finish in the specified window you can create multiple maintenance window that run one after another. That way the updates that were not installed on the first run will be installed on the second one. If the server that you are updating does not have sufficient resources and that is causing for the updates to not install fast I would suggest to increase the resources of that server. If this is caused by any other issue I would suggest to provide more information about the issue as there are no details.

    Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

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