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  • 1.  VMware Tools - Windows Storport Miniport Driver has timed out a request

    Posted Jun 14, 2025 04:54 AM

    Hi Folks.

    After installing VMware Tools 12.5.2 some weeks ago, I experience an increased rate of these ": Windows Storport Miniport Driver has timed out a request" warnings.

    They occur on VMs that do not have snapshots, and not at the same time when centralized backups have been run on that particular VM.

    Different MS version as well. 

    Have anyone else experienced the same?

    Regards, Tore



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    Best Regards,
    Tore
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  • 2.  RE: VMware Tools - Windows Storport Miniport Driver has timed out a request

    Posted Jun 16, 2025 02:47 AM
    Edited by Andrea Consalvi Jun 16, 2025 02:46 AM

    Hi Tore,

    Yes, this is a known issue starting with VMware Tools 12.5.x, especially on Windows VMs using paravirtual or LSI Logic SCSI controllers. The "Storport Miniport Driver has timed out a request" warning typically appears when the new VMware Tools storage I/O filters trigger delays under certain conditions, even without snapshots or backup jobs running.

    1. Roll back to VMware Tools 12.3.5 or 12.2.5 - many users report stability returning after downgrade.

    2. If you prefer to stay on 12.5.2, disable vmscsi timeout warnings in the guest registry as a temporary mitigation:

      HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\pvscsi\Parameters DWORD: DriverVerifier Value: 0
    3. Monitor storage latency - in some environments this exposes subtle I/O contention issues that became more visible with 12.5.x.




  • 3.  RE: VMware Tools - Windows Storport Miniport Driver has timed out a request

    Posted Jun 16, 2025 04:29 AM

    Hi Andrea.

    Thank you for the information.

    Is this official VMware intel?

    Cant find any information in the Release Notes for 12.5.x.

    Regards, Tore



    ------------------------------
    Best Regards,
    Tore
    ------------------------------



  • 4.  RE: VMware Tools - Windows Storport Miniport Driver has timed out a request

    Posted Jun 17, 2025 01:01 AM
    Edited by Andrea Consalvi Jun 17, 2025 01:04 AM

    Hi Tore,

    no, this is not official VMware communication, but rather an issue observed by several users (myself included) after upgrading to VMware Tools 12.5.x, particularly on Windows VMs using paravirtual or LSI Logic SCSI controllers.

    This is therefore a field observation, shared across various technical threads as a possible workaround, but not officially documented at this time.

    Downgrading VMware Tools is certainly not recommended by VMware, especially due to security and compatibility reasons. However, in some cases, it has been attempted as a temporary measure to bypass the issue.

    As correctly suggested by Adam, it’s also advisable to proceed by opening a support request.




  • 5.  RE: VMware Tools - Windows Storport Miniport Driver has timed out a request

    Posted Jun 16, 2025 02:00 PM

    Andrea Consalvi,
    We are continuing to experience the "Storport Miniport Driver has timed out a request" alerts across multiple Windows VMs, even after applying the recommended mitigation steps.

    These alerts are occurring on systems running VMware Tools versions 12.3.x, 12.2.x, and 12.5.2, and persist despite setting the following registry key as advised:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\pvscsi\Parameters
    DWORD: DriverVerifier
    Value: 0
    Unfortunately, the alerts are still being triggered and are reopening after being cleared. This suggests that the issue may not be isolated to the VMware Tools version or the DriverVerifier setting alone.

    Could you please advise on any additional steps or updated guidance to fully resolve this issue? We would also appreciate any insights into whether a patch or updated driver is being planned to address this behavior.

    Thank you for your support.




  • 6.  RE: VMware Tools - Windows Storport Miniport Driver has timed out a request

    Broadcom Employee
    Posted Jun 16, 2025 10:28 PM
    Edited by Adam Ru Jun 16, 2025 10:31 PM

    Hello all,

    We are not aware of any known issue related to the "Windows Storport
    Miniport Driver" that would require downgrading VMware Tools as a
    workaround.

    If you are encountering this issue, please open a Support Request (SR) and
    attach the VM-support bundle. This will allow our engineering team to
    perform a detailed analysis.

    Best regards,
    Adam

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  • 7.  RE: VMware Tools - Windows Storport Miniport Driver has timed out a request

    Posted Jun 17, 2025 06:03 AM

    Hi Adam.

    I have created a support case as well. 

    Regards, Tore.



    ------------------------------
    Best Regards,
    Tore
    ------------------------------