Number of System Log Errors Increasing During Nightly Backup - What Can Be Done?

Question

Right now, I'm getting quite a number of warnings and errors with my nightly (wbadmin) backups to external USB drive using Windows 8.1 and the Spring Update.  Fortunately, the VSS-integrated system image backups are still sound, but it seems as though
Windows 8.1 is becoming less and less aware and tolerant of them.  That's not right!
With Windows 8.1 before the Spring Update I was seeing the warnings, but not the FilterManager errors.  The update brought the errors.
Perhaps not too many Windows 8 users use wbadmin start backup -vssFull commands to do their backups, but I'm sure a lot of folks running Server 2012 do.
What can be done to make the backup process smoother and eliminate these warnings and errors?
Here's the specific list of warnings / errors I got from last night, which started at 2:00am and ran to 4:26am:
As usual, clicking the Event Log Online Help button yields:  "We're sorry, but the page you requested could not be found.  You can search on TechNet for more information."  Microsoft, you know that needs to be fixed too, right?
The specific command I'm using, via the Task Scheduler, is:
wbadmin start backup -allCritial -vssFull -quiet -backupTarget:G:\
For those who might suggest 3rd party backup, bear in mind I very much want the VSS integration that Windows Backup provides, and while wbadmin is producing backups that can actually be restored I can ignore these warnings and errors.  But it would
be nice to not have them.
And yes, I've considered 3rd party backup solutions, but while wbadmin is producing VSS-integrated system image backups that can be restored from the Windows startup recovery environment I'd prefer those.
-Noel
Detailed how-to in my eBooks:  
Configure The Windows 7 "To Work" Options
Configure The Windows 8 "To Work" Options

Answer 1

The errors suddenly stopped on their own, but the warnings continue.
As with most software issues, the errors came back again, specifically after a reboot mandated by yet another Windows Update.  I'm assuming they stopped before because the Filter Manager just gave up, or maybe the volume numbers got too high (notably
the volume numbers started over again at a lower number).
As of last night, these messages apparently having to do with my wbadmin backup (which starts at 2am) were logged in my System Event Log:
2:00:00 (Information) - Virtual Disk Service - Service started.
2:01:52 (Information) - Ntfs (Microsoft-Windows-Ntfs) - Volume System Reserved (\Device\HarddiskVolumeShadowCopy22) is healthy.  No action is needed.
2:02:15 (Information) - Ntfs (Microsoft-Windows-Ntfs) - Volume C - NoelC4 SSD (\Device\HarddiskVolumeShadowCopy23) is healthy.  No action is needed.
2:02:17 (Information) - Kernel-General - TxR init phase for hive \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy23\Windows\system32\config\SYSTEM (TM: {5df557d3-c9aa-11e3-829a-1803734ec99c}, RM: {5df557d2-c9aa-11e3-829a-1803734ec99c}) finished with
result=0xC00000A2 (Internal code=7).
2:02:17 (Information) - Kernel-General - TxR init phase for hive \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy23\Windows\system32\config\DRIVERS (TM: {5df557d5-c9aa-11e3-829a-1803734ec99c}, RM: {5df557d4-c9aa-11e3-829a-1803734ec99c}) finished with
result=0xC00000A2 (Internal code=7).
2:02:21 (Information) - Kernel-General - The access history in hive \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy23\Users\default\ntuser.dat was cleared updating 528 keys and creating 29 modified pages.
2:02:25 (Information) - FilterManager - File System Filter 'FsDepends' (6.3, ?2013?-?08?-?22T07:39:42.000000000Z) has successfully loaded and registered with Filter Manager.
2:02:27 (Warning) - disk - Disk 5 has been surprise removed.
2:02:29 (Warning) - disk - Disk 5 has been surprise removed.
2:02:44 (Error) - FilterManager - Filter Manager failed to attach to volume '\Device\HarddiskVolume15'.  This volume will be unavailable for filtering until a reboot.  The final status was 0xC03A001C.
2:02:44 (Error) - FilterManager - Filter Manager failed to attach to volume '\Device\HarddiskVolume15'.  This volume will be unavailable for filtering until a reboot.  The final status was 0xC03A001C.
2:02:45 (Warning) - disk - Disk 5 has been surprise removed.
2:19:55 (Error) - FilterManager - Filter Manager failed to attach to volume '\Device\HarddiskVolume17'.  This volume will be unavailable for filtering until a reboot.  The final status was 0xC03A001C.
2:19:55 (Error) - FilterManager - Filter Manager failed to attach to volume '\Device\HarddiskVolume17'.  This volume will be unavailable for filtering until a reboot.  The final status was 0xC03A001C.
2:19:55 (Error) - FilterManager - Filter Manager failed to attach to volume '\Device\HarddiskVolume17'.  This volume will be unavailable for filtering until a reboot.  The final status was 0xC03A001C.
2:19:55 (Warning) - disk - Disk 5 has been surprise removed.
2:20:04 (Warning) - disk - Disk 5 has been surprise removed.
2:30:00 (Information) - Virtual Disk Service - Service stopped.
-Noel
Detailed how-to in my eBooks:  
Configure The Windows 7 "To Work" Options
Configure The Windows 8 "To Work" Options