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
    2020-10-19T07:05:10+00:00

    Morning guys,

    Just to make you aware this is a known issue and Microsoft are aware.

    I've recently tested a private fix from Microsoft Support that resolved the issue and the public fix should hopefully be included in the November update window, however it may get pushed to the January window if there are any issues with it during further internal testing.

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  3. Anonymous
    2020-10-16T11:32:30+00:00

    ... but are you able to log in via RDP? ...

    I can log into my computer from my laptop with RDP. The reverse is also possible. There never was a BSOD.

    In my estimation, the error occurs when offlinefiles are activated and configured and/or when a network component requires SMB1 and the firewall is blocking the old Netbios ports.

    At least it helped on my local network:

    • ProviderFlags DWORD 32Bit to 1 for each individual share in "HKEY_CURRENT_USER \ Network"
    • In the private network of the Windows firewall, release ports 137-139, 445 for NetBios and SMB, TCP and UDP incoming and outgoing.

    In my opinion there must be a bug in the timing with SMB1 and the login, in which a module of the RDR_FILE_SYSTEM, with deactivated SMB1 then when processing mrxsmb20.sys and with activated SMB1 then when processing mrxsmb10.sys, the BSOD triggers the user login.

    In the end, only Microsoft itself will know where the trouble is and at some point there will be a small fix in the major updates ...

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  4. Anonymous
    2020-10-16T10:57:30+00:00

    Morning,

    Same problem here, BOD continues in machines. 

    Please microsoft Fix this with one update.

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  5. Anonymous
    2020-10-16T06:44:16+00:00

    Ive been getting lots of calls from clients having temp profile login and roaming profiles breaking. Had to rebuild several accounts so far.

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