What causes "SYSTEM: [DRIVER] \FileSystem\rdbss A file has been opened across the network"?


pokeefe0001

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An alternate subject line for this question:
What is the "Redirected Drive Buffering SubSystem"?

I'm trying to debug a problem which involves a connection with a NAS and the "powerconfig -requests" response
Code:
SYSTEM:
[DRIVER] \FileSystem\rdbss
A file has been opened across the network.
SMB connections do not raise this condition.
SFTP does not raise this condition.
Mounting a VeraCrypt contain on the NAS does raise this condition as do other things, I'm sure.

Obviously it isn't just an open file that raises this condition. It apparently also involves the way the file is accessed.
So what does that message actually mean?
 

My Computer

System One

  • OS
    Windows 11
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    Manufacturer/Model
    Microsoft
    CPU
    Intel Core i5-8400
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    ASUS PRIME H370-PLUS
    Memory
    16GB
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    Intel UHD Graphics 630
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    Samsung SyncMaster 2043BWX
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    1680 x 1050
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    Samsung SSD 850 256GB
    WDC 1TB NVMe
    WD 3TB external USB drive
    PSU
    I don't remember
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    Corsair something-or-other
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    Air CPU + 2 case fans
    Keyboard
    DAS S Pro (Cherry Brown)
    Mouse
    Logitech USB of some sort

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System One System Two

  • OS
    Windows 11 Pro 23H2 22631.3155
    Computer type
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    Manufacturer/Model
    Dell Optiplex 7080
    CPU
    i9-10900 10 core 20 threads
    Motherboard
    DELL 0J37VM
    Memory
    32 gb
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    Integrated Realtek
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    Internet Speed
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    Firefox
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    Defender+MWB Premium
  • Operating System
    Windows 10 Pro 22H2 19045.3930
    Computer type
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    Manufacturer/Model
    Dell Optiplex 9020
    CPU
    i7-4770
    Memory
    24 gb
    Monitor(s) Displays
    Benq 27
    Screen Resolution
    2560x1440
    Hard Drives
    256 gb Toshiba BG4 M.2 NVE SSB and 1 tb hdd
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    500w
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    MT
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    Dell factory
    Mouse
    Logitech wireless
    Keyboard
    Logitech wired
    Internet Speed
    still not telling
    Browser
    Firefox
    Antivirus
    Defender+MWB Premium
While I hadn't found that specific page you pointed to, I had found several references to that registry hack. And I must have something about the group policy alluded to (but not named) in the that page because I have that policy defined
Code:
Computer Configuration>Administrative Templates>System>Power Management>Sleep Setting>Allow Automatic Sleep with Open network Files
However, that didn't fix the VeraCrypt problem I'm working on so now I want to try to understand what RDBSS is and how it works. That's probably beyond my pay grade, but I want to try anyway.

The problem I'm working on: VeraCrypt has an option to close and dismount its encrypted drives when Windows enters a low power state. That used to work for me, but it stopped working. That open file across the network stopped Windows from sleeping. With that group policy set, I think automatic sleep is now happening but VeraCrypt is not closing and dismounting the encrypted drive. I think Veracrypt is not being notified when the system is about to enter the low power state. (That's just a guess.)

I'm probably misunderstanding the problem and probably have little hope of understanding it unless I know a bit about RDBSS
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Microsoft
    CPU
    Intel Core i5-8400
    Motherboard
    ASUS PRIME H370-PLUS
    Memory
    16GB
    Graphics Card(s)
    Intel UHD Graphics 630
    Sound Card
    On board
    Monitor(s) Displays
    Samsung SyncMaster 2043BWX
    Screen Resolution
    1680 x 1050
    Hard Drives
    Samsung SSD 850 256GB
    WDC 1TB NVMe
    WD 3TB external USB drive
    PSU
    I don't remember
    Case
    Corsair something-or-other
    Cooling
    Air CPU + 2 case fans
    Keyboard
    DAS S Pro (Cherry Brown)
    Mouse
    Logitech USB of some sort

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