Forums Bug Reports mIRC crash

Problem signature:
Problem Event Name: BEX
Application Name: mirc.exe
Application Version: 7.41.0.0
Application Timestamp: 54f1977f
Fault Module Name: UMEngx86.dll_unloaded
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 54c19b4d
Exception Offset: 743a8250
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 4105
Additional Information 1: 6f7e
Additional Information 2: 6f7e56f34a8f6dcb13d783101567a033
Additional Information 3: 6f7e
Additional Information 4: 6f7e56f34a8f6dcb13d783101567a033

At first glance, it appears to be your selection of anti-virus is at fault. Symantec Endpoint Protection 12.1, namely UMEngx86.dll.

http://www.symantec.com/connect/forums/w...ates-0xc0000005

> [T]he only thing which helped is Uninstalling the Symantec Endpoint Protection (just switching it off was not enough).

http://www.symantec.com/connect/forums/symantec-endpoint-protection-update-causing-0xc0000005-error

> The problem can 99% sure be attributed to UMEngx86.dll hooking into kernel functions. Try out the minimum repro code I provided: If the EXE is run with SEP installed and UMEngx86.dll present, UMengx86.dll is loaded during initialization and the crash in ntdll.dll occurs before the main method is reached. If the UMengx86.dll is simply renamed, the EXE does not load it at startup and everything works fine.

> The new SEP 12.1.4.1 release SEP 12 RU4 MP1 seems to have a fix for a similar issue.

That looks about right. It appears to be an issue with a Norton anti-virus component.