We have been seeing this on our 2016 Windows Essentials Server:

Log Name: System
Source: Microsoft-Windows-FilterManager
Date: 22/04/2020 12:03:44
Event ID: 3
Task Category: None
Level: Error
Keywords:
User: SYSTEM
Computer: %computername%.domain.local
Description:
Filter Manager failed to attach to volume '\Device\HarddiskVolume6367'. This volume will be unavailable for filtering until a reboot. The final status was 0xC03A001C.
Event Xml:



3
0
2
0
0
0x8000000000000000

198134


System
%computername%.domain.local



0xc03a001c
26
\Device\HarddiskVolume6367



What does this mean to the system?

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Just to explain this is during the backup of the system and the disk in question is obviously a temporary disk created by the backup process that Windows is detecting and acting upon as if it were a physical disk being plugged in, the question is, how do I stop it doing so?

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