rdr_file_system 0x27 BSOD After Windows 10 2004 update, but only on domain profiles

Anonymous
2020-06-08T14:50:36+00:00

Good morning, I am having an issue on some PCs recently after some PCs received the Windows 10 2004 build update. After receiving said update, the machines will BSOD with a 0x027 error code when logging into a domain profile while connected to the network.

If I remove the network cable from the PC and log into a domain account that was cached on the machine before the update, it will log in without issues and then I can connect it to the network and it seems to resume function. I can also sign into a local account on the machine, with and without network connectivity. 

I used Bluescreen View to look at the dumps which seem to be showing rdbss.sys and mrxsmb20.sys as drivers that are causing the issue. I have tried updating network drivers etc from the vendors websites and not relying on Windows to, but am still having the issue.

The other bizarre thing is if the PC crashes 3 times, boots into the recovery mode to try and repair your PC and I restart it, it will then log in once to a domain account and seem to be functioning, however if the PC is restarted it will BSOD on log in.

Has anyone seen or heard of any issues like this since this update? Could it be something out dated on the server that is causing the issue to happen to the machines on the newer OS? I can't help but feel like it has something to do with folder redirection and that is why cached accounts will work with no network connection however I am stumped how to get around this other than not updating every other machine, and rolling back if possible (I had a PC that was upgraded from Windows 7 to 10 and went straight to the 2004 build and BSOD'd, I tried to roll back to Win7 and system will not boot at the moment saying it is missing system files etc.).

I have some mini dumps I can share if that would help as I would like to get to the bottom of this if possible.

Windows for home | Windows 10 | Performance and system failures

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  1. Anonymous
    2020-08-12T13:25:53+00:00

    As stated in the thread WIN 10 - BSOD - RDR - MRXSMB20.SYS - FLTMGR.SYS by ahso-dex, you shoud:

    From an elevated powershell (right click the Powershell icon, Run as Administrator):

    Set-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Services\CSC\Parameters' -Name "FormatDatabase" -Value "1" -Type DWord

    Then reboot.

    That may be a solution if you do not need offline files (and folder redirection) but that’s not a workable solution for a system that does. Curiously, if

    after a reboot, i log on to a local account, log off and then log on again using my domain account, no BSOD.

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  2. Anonymous
    2020-08-15T10:01:00+00:00

    Same problem here.

    No problem if I disable offline files but that is no option.

    No problem when I login with a local account - but BSOD when I login with my domain account.

    We use domain namespaces (DFS) - I don't know if this is part of the problem.

    I had no other choice than uninstalling the 2004 build....

    Any help would be appreciated!

    Luc Dierick

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  3. Anonymous
    2020-08-22T12:44:33+00:00

    Same problem here with my Surface Laptop 3.

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  4. Anonymous
    2020-08-25T22:52:00+00:00

    Same problem here.

    No problem if I disable offline files but that is no option.

    No problem when I login with a local account - but BSOD when I login with my domain account.

    We use domain namespaces (DFS) - I don't know if this is part of the problem.

    I had no other choice than uninstalling the 2004 build....

    Any help would be appreciated!

    Luc Dierick

    My BSODs returned so I did a bit more troubleshooting.  It seems that in my case at least, the offline files and caching were not enough to trigger the BSOD but if I mapped as a drive the network share that has offline files and caching enabled, then the BSOD happens on the next reboot.  Again, if after rebooting I log onto the machine with a local account first, then log off and then come back in using my domain account, I have no issues.  Go figure.  The August updates did not rectify the problem so I've put any feature updates on hold for 365 days hoping that Microsoft will address the issue before that expires.

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