AccessViolationException v1.4.0.0

[iyevhen]

Hi,
I faced with strange error while performing backup of sql databases on Win2012r2.
Machine which is failing to backup has 100 sql databases on C: drive.
Other machines with less number of dbs are being successfully backed up.
AlphaVSS version is 1.4.0.0

It might be related to XML document modification via msxml3.dll

OS Name: Microsoft Windows Server 2012 R2 Datacenter
OS Version: 6.3.9600 N/A Build 9600

.NET versions:

ComputerName     Build Version                       Comment
------------     ----- -------                       -------
W2012-S2012      50727 2.0.50727.4927
W2012-S2012      30729 3.0.30729.4926
W2012-S2012      30729 3.5.30729.4926
W2012-S2012     378675 4.5.1                         (8.1/2012R2)

The app terminates unexpectedly and event viewer contains the following errors related to AlphaVSS:

---

Faulting application name: alphabackup.exe, version: 0.1.7060.29100, time stamp: 0x5cc99aab
Faulting module name: msxml3.dll, version: 8.110.9600.16483, time stamp: 0x52a50e5c
Exception code: 0xc0000005
Fault offset: 0x0000000000001d84
Faulting process id: 0x145c
Faulting application start time: 0x01d500222b15f250
Faulting application path: C:\alphabackup.exe
Faulting module path: C:\Windows\System32\msxml3.dll
Report Id: 6b6eca3b-6c15-11e9-80d3-000c29a02e5f
Faulting package full name: 
Faulting package-relative application ID: 

Application: alphabackup.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.AccessViolationException
Stack:
   at Alphaleonis.Win32.Vss.VssWriterComponents+ComponentList.get_Count()
   at Alphaleonis.Win32.Vss.VssListAdapter`1+Enumerator[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].MoveNext()
   at AlphaBackup.Vss.AlphaVssExtensions.GetVssComponent(Alphaleonis.Win32.Vss.IVssBackupComponents, AlphaBackup.Vss.Descriptors.VssComponentDescriptor)
   ......
   at AlphaBackup.Program.Main(System.String[])

---

Faulting application name: alphabackup.exe, version: 0.1.7053.22118, time stamp: 0x5cc029a0
Faulting module name: msxml3.dll, version: 8.110.9600.16483, time stamp: 0x52a50e5c
Exception code: 0xc0000005
Fault offset: 0x0000000000022bd8
Faulting process id: 0x15d4
Faulting application start time: 0x01d5001d070cb40b
Faulting application path: C:\alphabackup.exe
Faulting module path: C:\Windows\System32\msxml3.dll
Report Id: 66097df3-6c10-11e9-80d3-000c29a02e5f
Faulting package full name: 
Faulting package-relative application ID: 



Application: alphabackup.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.AccessViolationException
Stack:
   at Alphaleonis.Win32.Vss.VssBackupComponents.SetBackupSucceeded(System.Guid, System.Guid, Alphaleonis.Win32.Vss.VssComponentType, System.String, System.String, Boolean)
   at AlphaBackup.Vss.VssClient.BackupComplete()
   .....
   at AlphaBackup.Program.Main(System.String[])

The thing is that it's floating error. I have 4 fails on 12 backup jobs.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.