Attempting to Backup a Windows 2012 Server with MSSQL - Constant VSS Errors

I have not been on these forums in probably over a year, but I have been passively using UrBackup since then.

The problem is, that even though I can get it backup Physical and Virtual Windows Machines, and Linux Machines easy, I cannot figure out how to backup MSSQL servers.

This is the most recent log, and I must say that amandabackup is from Zmanda-- we’re testing out other systems. I could understand how it would be interfering; however, we have been getting Writer failures long before using Amanda (we have added the client just a week ago.)

And all other servers work fine, but the VSS errors on this one just prevent anything from happening.

If anyone has any ideas as to why we are having these issues, I would be willing to try out almost any fix.

2018-10-29 14:47:46: ERROR: FileSrv: Could not open file \\?\C:. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:21:22: WARNING: Writer System Writer has failure state VSS_WS_FAILED_AT_FREEZE with error VSS_E_WRITERERROR_TIMEOUT. UrBackup will continue with the backup but the associated data may not be consistent.
2018-10-29 15:21:22: WARNING: Writer Registry Writer has failure state VSS_WS_FAILED_AT_FREEZE with error VSS_E_WRITERERROR_NONRETRYABLE. UrBackup will continue with the backup but the associated data may not be consistent.
2018-10-29 15:21:22: WARNING: Writer BITS Writer has failure state VSS_WS_FAILED_AT_FREEZE with error VSS_E_WRITERERROR_TIMEOUT. UrBackup will continue with the backup but the associated data may not be consistent.
2018-10-29 15:21:22: WARNING: Writer WMI Writer has failure state VSS_WS_FAILED_AT_FREEZE with error VSS_E_WRITERERROR_TIMEOUT. UrBackup will continue with the backup but the associated data may not be consistent.
2018-10-29 15:21:22: WARNING: Writer Shadow Copy Optimization Writer has failure state VSS_WS_FAILED_AT_FREEZE with error VSS_E_WRITERERROR_TIMEOUT. UrBackup will continue with the backup but the associated data may not be consistent.
2018-10-29 15:21:22: WARNING: Writer ASR Writer has failure state VSS_WS_FAILED_AT_FREEZE with error VSS_E_WRITERERROR_TIMEOUT. UrBackup will continue with the backup but the associated data may not be consistent.
2018-10-29 15:21:22: WARNING: Writer SqlServerWriter has failure state VSS_WS_FAILED_AT_PREPARE_SNAPSHOT with error VSS_E_WRITERERROR_NONRETRYABLE. UrBackup will continue with the backup but the associated data may not be consistent.
2018-10-29 15:21:22: WARNING: Writer COM+ REGDB Writer has failure state VSS_WS_FAILED_AT_FREEZE with error VSS_E_WRITERERROR_TIMEOUT. UrBackup will continue with the backup but the associated data may not be consistent.
2018-10-29 15:21:35: ERROR: Starting snapshot set failed. Error code VSS_E_FLUSH_WRITES_TIMEOUT
2018-10-29 15:21:36: ERROR: Creating snapshot of "C" failed.
2018-10-29 15:25:10: ERROR: Creating shadowcopy of "C" failed.
2018-10-29 15:26:42: ERROR: FileSrv: Could not open file \\?\C:\Backup Volume\Company LF8.mdf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:26:42: ERROR: FileSrv: Could not open file \\?\C:\Backup Volume\Company LF8_Data_1.mdf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:26:42: ERROR: Error opening file handle to \\?\C:\Backup Volume\Company LF8.mdf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:26:42: ERROR: FileSrv: Could not open file \\?\C:\Backup Volume\Company LF8_Data_1_log.LDF. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:26:42: ERROR: Error opening file handle to \\?\C:\Backup Volume\Company LF8_Data_1.mdf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:26:42: ERROR: FileSrv: Could not open file \\?\C:\Backup Volume\Company LF8_log.LDF. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:26:42: ERROR: Error opening file handle to \\?\C:\Backup Volume\Company LF8_Data_1_log.LDF. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:26:42: ERROR: Error opening file handle to \\?\C:\Backup Volume\Company LF8_log.LDF. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:26:42: ERROR: FileSrv: Could not open file \\?\C:\Backup Volume\AUDIT\Company.log. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 15:26:42: ERROR: Error opening file handle to \\?\C:\Backup Volume\AUDIT\Company.log. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:13: ERROR: Error getting account SID of user APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES. Code: 1332 - No mapping between account names and security IDs was done.
2018-10-29 16:33:17: ERROR: Error getting account SID of user APPLICATION PACKAGE AUTHORITY\Software and hardware certificates or a smart card. Code: 1332 - No mapping between account names and security IDs was done.
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\NTUSER.DAT. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\NTUSER.DAT. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TM.blf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TM.blf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TMContainer00000000000000000001.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TMContainer00000000000000000001.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TMContainer00000000000000000002.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TMContainer00000000000000000002.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\ntuser.dat.LOG1. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\ntuser.dat.LOG1. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\ntuser.dat.LOG2. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\ntuser.dat.LOG2. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat.LOG1. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat.LOG1. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat.LOG2. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat.LOG2. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat{9c39abfa-db0e-11e8-80de-00155d737707}.TM.blf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat{9c39abfa-db0e-11e8-80de-00155d737707}.TM.blf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat{9c39abfa-db0e-11e8-80de-00155d737707}.TMContainer00000000000000000001.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat{9c39abfa-db0e-11e8-80de-00155d737707}.TMContainer00000000000000000001.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat{9c39abfa-db0e-11e8-80de-00155d737707}.TMContainer00000000000000000002.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\amandabackup\AppData\Local\Microsoft\Windows\UsrClass.dat{9c39abfa-db0e-11e8-80de-00155d737707}.TMContainer00000000000000000002.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\User\NTUSER.DAT. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\User\NTUSER.DAT. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\User\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TM.blf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\User\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TM.blf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\User\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TMContainer00000000000000000001.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\User\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TMContainer00000000000000000001.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\User\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TMContainer00000000000000000002.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\User\NTUSER.DAT{9c9f9f65-ae7e-11e3-80ba-0026b955dac2}.TMContainer00000000000000000002.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\User\ntuser.dat.LOG1. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\User\ntuser.dat.LOG1. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\User\ntuser.dat.LOG2. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\User\ntuser.dat.LOG2. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\.urbackupclientgui_startonce. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:19: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\.urbackupclientgui_startonce. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat.LOG1. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat.LOG1. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat.LOG2. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat.LOG2. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat{444543ff-f9d7-11e6-80c1-00155d737707}.TM.blf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat{444543ff-f9d7-11e6-80c1-00155d737707}.TM.blf. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat{444543ff-f9d7-11e6-80c1-00155d737707}.TMContainer00000000000000000001.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat{444543ff-f9d7-11e6-80c1-00155d737707}.TMContainer00000000000000000001.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat{444543ff-f9d7-11e6-80c1-00155d737707}.TMContainer00000000000000000002.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\UsrClass.dat{444543ff-f9d7-11e6-80c1-00155d737707}.TMContainer00000000000000000002.regtrans-ms. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\WebCacheLock.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:21: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\WebCacheLock.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\TileCacheDefault-167218_80.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\TileCacheDefault-167218_80.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\TileCacheLogo-1068968_100.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\TileCacheLogo-1068968_100.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\TileCacheStartView-165859_80.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\TileCacheStartView-165859_80.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\TileCacheTickle-165890_80.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\TileCacheTickle-165890_80.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_16.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_16.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_256.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_256.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_32.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_32.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_48.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_48.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\INetCache\counters.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\INetCache\counters.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Notifications\WPNPRMRY.tmp. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Notifications\WPNPRMRY.tmp. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Notifications\appdb.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:22: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\Notifications\appdb.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:23: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\WebCache\V01.log. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:23: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\WebCache\V01.log. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:23: ERROR: FileSrv: Could not open file \\?\C:\Users\User\AppData\Local\Microsoft\Windows\WebCache\WebCacheV01.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:23: ERROR: Error opening file handle to \\?\C:\Users\User\AppData\Local\Microsoft\Windows\WebCache\WebCacheV01.dat. The process cannot access the file because it is being used by another process. (code: 32)
2018-10-29 16:33:39: ERROR: Error getting file type of \\?\C:
2018-10-29 16:34:18: ERROR: FileSrv: Could not open file \\?\C:. The process cannot access the file because it is being used by another process. (code: 32)

UrBackup is only the messenger here.
I guess you have googled for VSS_E_FLUSH_WRITES_TIMEOUT and tried a few of the proposed solutions?

There also should be more info about this error in the system/application event log of Windows.

Hey, sorry I have waited so long for a reply on this.
@uroni I have tried a few, but I have discovered what the problem truly was.

Quest, or more better known as Dell Rapid Recovery.

We had Quest for a while now, and are currently looking at other backup solutions-- primarily since we needed this MSSQL server to be backed up and UrBackup couldn’t do that.

Well, it turns out that the Rapid Recovery Agent that focuses on log generation-- which puts it in the System Reserve Partition-- which was what was causing extraordinarily high I/O activity. No other solution would back it up besides VEEAM, and I am guessing that is only due to them having an absurdly long wait time for the I/O activity to reach “usable” levels.

I’m not sitting here pushing one product or the other, simply telling you what we found.

TL;DR Logging Service from another backup solution was causing high I/O activity, which prevented us from backing up the MSSQL server.

I’m just ecstatic that I finally got a proper backup of that machine on this platform.