KEPServerEX 5.21.112.0 crashing with ntdll.dll error (0xc0000005) on Windows Server 2012 R2

Hello,

We are experiencing an issue with KEPServerEX v5.21.112.0 on Windows Server 2012 R2.

The program does not operate normally and the KEPServerEX Runtime service fails to start.

In Windows Event Viewer (Application Log), the following error is recorded:

Faulting application name: server_config.exe

Version: 5.21.112.0 Faulting module name: ntdll.dll

Version: 6.3.9600.17415

Exception code: 0xc0000005

Fault offset: 0x000496c5

Application path: C:\Program Files (x86)\Kepware\KEPServerEX 5\server_config.exe

Module path: C:\Windows\System32\ntdll.dll

We have already performed the following troubleshooting steps:

1. Reinstalled Microsoft Visual C++ 2008 SP1 Redistributable (x86) version 9.0.30729.6161
2. Ran sfc /scannow (no integrity violations found)
3. Reinstalled KEPServerEX
4. Manually deleted the folders C:\Program Files (x86)\Kepware C:\ProgramData\Kepware before reinstalling
5. Reset project configuration files

However, the same issue continues to occur.

If there are any recommended troubleshooting steps or known solutions related to the ntdll.dll (0xc0000005) error on Windows Server 2012 R2, we would appreciate your guidance.

Thank you.