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Windows Server reboot needed or can wait?

Anonymous
2025-02-19T16:27:42+00:00

Every month Windows Server tells us to reboot the server after the cumulative update install.

There is also a powershell script "Test-PendingReboot" that puts IsRebootPending to True when there are PendingFileRenameOperations

When we use this script every week to decide whether to reboot or not, the server gets rebooted every week.

This is because several MS applications (mostly Edge) causes this registry key filled.

We can also run this cmdlet with parameter -SkipPendingFileRenameOperationsCheck

This causes the server to reboot every month.

For server update we would select the second option, with extra parameter

But is this save to wait a few weeks for the monthly reboot?

Is the server more vulnerable when there are PendingFileRenameOperations ?

Windows Server Devices and deployment Install Windows updates, features, or roles

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  1. Anonymous
    2025-02-20T05:57:25+00:00

    Hello,

    Thank you for posting in Microsoft Community forum.

    Based on the description, I understand your question is related to update reboot.

    Rebooting monthly after cumulative updates is generally a good practice. It ensures that all updates are properly applied and that any pending operations are completed. Delaying reboots for a few weeks is usually safe, but it depends on the nature of the updates and the specific operations pending.

    If the pending operations include updates or changes related to security patches, delaying the reboot could leave your server exposed to vulnerabilities. It's essential to evaluate the nature of the pending operations and the updates applied.

    PendingFileRenameOperations registry key indicates that certain files are scheduled to be renamed or deleted upon the next reboot. While this doesn't directly make your server more vulnerable, it can cause issues if the changes are critical for system stability or security.

    Have a nice day. 

    Best Regards,

    Molly

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  2. Anonymous
    2025-02-20T08:28:08+00:00

    We always reboot our servers after the monthly update.

    But we also check for reboot pending every week, and then reboot if necessary.

    But is it save to do the test with parameter "-SkipPendingFileRenameOperationsCheck"?

    I now only see files to be renamed from de weekly Edge update

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  3. Anonymous
    2025-02-21T08:04:13+00:00

    Windows Client for IT Pros and Windows Server forums are moving to Microsoft Q&A

    We’re transitioning to Microsoft Q&A for a more streamlined experience. Starting 21 February, new questions can only be posted on Microsoft Q&A. Existing discussions will remain accessible here. 

    From the 26 February customers looking for support on Answers will be automatically redirected to Microsoft Q&A.

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