OLEAUT32.dll crash in production server

Question

User-1753596826 posted

Hi everyone,

we are experiencing problems in our ASP.NET application in the client's production server (Windows Server 2008 R2 Standard).

In random moments of the day, the IIS Application Pool crashes and recycles with this report in the error log:

Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7afa2

Faulting module name: OLEAUT32.dll, version: 6.1.7601.23775, time stamp: 0x58f4e14e

Exception code: 0x80000003

Fault offset: 0x0000000000006236

Faulting process id: 0xa68

Faulting application start time: 0x01d385ea3d4ab286

Faulting application path: c:\windows\system32\inetsrv\w3wp.exe

Faulting module path: C:\Windows\system32\OLEAUT32.dll

Report Id: 32ecdfdd-f1ee-11e7-bfa6-005056b60c4e

The module is used by C++ code, but our application uses both C++ and C#. Our application runs in 64bit and targets .NET 4.5

What could be the problem? What can we do to prevent this?

Thank you

PS I browsed through the other forums, but I wasn't sure this was relevant to any of them

Answer 1

User753101303 posted

Hi,

Try perhaps https://support.microsoft.com/en-us/help/919792/how-to-use-the-debug-diagnostics-tool-to-troubleshoot-a-process-that-h which show allow to get some more info from a crash dump (if I remember I have been able once to understand which exact function failed).

The C# code calls into C++ code using  DllImport ? Could it be some kind of marshalling issue ?