We have an in house developed IIS extension that does authentication and authorization. We have a Windows 2012 server and have KFW 4.1 installed. It works fine for single request. But when sending concurrent requests to IIS, it generated Kerberos error when requesting Kerberos service ticket( function gss_init_sec_context is called )


Here are the error in our log:

“Credential cache is empty” or “No credentials cache found”


I would like to debug KFW code myself and tried to build the source. But I keep getting error when run nmake, any idea how to fix the build issue?


Faulting application name: libecho.exe, version:, time stamp: 0x5adf3b6a

Faulting module name: ntdll.dll, version: 6.3.9600.18969, time stamp: 0x5aa29ff0

Exception code: 0xc0000005

Fault offset: 0x000000000003b709

Faulting process id: 0xb10

Faulting application start time: 0x01d3dbdc839ddfe7

Faulting application path: c:\kfw-4.1\src\util\windows\obj\AMD64\dbg\libecho.exe

Faulting module path: C:\Windows\SYSTEM32\ntdll.dll

Report Id: c14b17cb-47cf-11e8-81cd-0ea29ef5ed10

Faulting package full name:

Faulting package-relative application ID:



Hong Ye

Identity Management


Cornell University