AccessViolationException when we try to access the IMAPI objects. This seems to be happen in few machines after windows update (August
13, 2019—KB4512501 (OS Build 17134.950)).
- Also it not only affect IMAPI it affect different places where Interop Marshaling is happening.
- Also we found AccessViolationException in our Reporting component. (LayoutManager.UpdatePageBreaks())
- UCMS IT service tool also crashing because of the same issue.
Currently we found it is happening in 4 machines after this KB update. Once we uninstall we don’t see this issue.
Attached call stack for various places.
Optical Drive:
_______________________
Application: syngo.DS.FE.Shell.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.AccessViolationException
at System.Runtime.InteropServices.CustomMarshalers.EnumeratorViewOfEnumVariant.GetEnumVariant()
at System.Runtime.InteropServices.CustomMarshalers.EnumeratorViewOfEnumVariant.MoveNext()
at syngo.DS.FE.LocalMedia.OpticalDrive.OpticalDrives+<get_DeviceIds>d__8.MoveNext()
at System.Linq.Enumerable+WhereEnumerableIterator`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].MoveNext()
at syngo.DS.FE.LocalMedia.OpticalDrive.OpticalDrives.GetMediaRecorders(syngo.DS.FE.LocalMedia.OpticalDrive.DeviceType, System.Func`2<syngo.DS.FE.LocalMedia.OpticalDrive.IMediaRecorder,Boolean>)
at syngo.DS.FE.LocalMedia.ViewModels.CustomExportDialogViewModel.AvailableOpticalDrive()
at syngo.DS.FE.LocalMedia.ViewModels.CustomExportDialogViewModel.GetDvdList()
at System.Threading.Tasks.Task`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].InnerInvoke()
at System.Threading.Tasks.Task.Execute()
at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(System.Threading.Tasks.Task ByRef)
at System.Threading.Tasks.Task.ExecuteEntry(Boolean)
at System.Threading.ThreadPoolWorkQueue.Dispatch()
Reporting:
________________________________________
Unhandled exception in Reporting: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at System.Runtime.InteropServices.CustomMarshalers.EnumeratorViewOfEnumVariant.GetEnumVariant()
at System.Runtime.InteropServices.CustomMarshalers.EnumeratorViewOfEnumVariant.MoveNext()
at KinetDx.CommonUtilities.HTMLUtilities.<GetAllVisibleHtmlElementsHelper>d__3.MoveNext() in d:\ProductFolder\Main\Report\Common\CommonUtilities\HTMLUtilities.cs:line 71
at KinetDx.CommonUtilities.HTMLUtilities.<GetAllVisibleHtmlElements>d__5.MoveNext() in d:\ProductFolder\Main\Report\Common\CommonUtilities\HTMLUtilities.cs:line 122
at KinetDx.Report.LayoutManager.ClearSectionsWithPageBreaks() in d:\ProductFolder\Main\Report\Report\LayoutManager.cs:line 514
at KinetDx.Report.LayoutManager.UpdatePageBreaks() in d:\ProductFolder\Main\Report\Report\LayoutManager.cs:line 557
________________________________________
UCMS:
________________________________________
Application: UCMS.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.AccessViolationException
at System.Runtime.InteropServices.CustomMarshalers.EnumeratorViewOfEnumVariant.GetEnumVariant()
at System.Runtime.InteropServices.CustomMarshalers.EnumeratorViewOfEnumVariant.MoveNext()
at UCMS.Service.CoreService.ivuxpQUO3XdKwTtYrJh(System.Object)
at UCMS.Service.CoreService.O5NzMvBKX(Boolean, Boolean, Boolean)
at UCMS.Service.CoreService.IkxQYFCLr()
at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
at System.Threading.ThreadHelper.ThreadStart()
