SOLVED. I found the cause and resolution to the problem. It seems that during an in place upgrade from a previous version of the Qlogic Drivers and Management Applications package from 20.20.2.2 to 20.20.3.2, which is a QCS upgrade from version 30 to 40 (drivers remain the same for BCM57xxx in my case), and dll is not updated, probably due to poor packaging of the DUP. Broken QCS - gamapi_x64.dll version 1.0.27.0 - 982,016 bytes Working QCS - gamapi_x64.dll version 1.0.27.0 - 990,720 bytes Notice the same dll version but different size? Shame So by simply putting correct 'version' of the dll in the QCSR\ folder fixes the issue without having to totally remove and re-install the drivers and applications, very annoying if you're using FCoE and/or iSCSI functions.   I got the proper dll from the latest DUP, Network_Driver_F58MD_WN64_34.07.00_A00-00_01.exe Nice one Dell.    
Hello all, I've recently updated the Qlogic drviers on our 12G and 13G systems with the latest DUP, Network_Driver_F58MD_WN64_34.07.00_A00-00.EXE, [URL] but now QCS crashes on launch with the following error: Faulting application name: QCS.exe, version: 40.0.16.0, time stamp: 0x5ab27e63Faulting module name: QLogic Corporation\QCSR\QCS.exe!GAM_SetVLANTableCfg, version: 6.3.9600.19153, time stamp: 0x5b93ffa7Exception code: 0xc0000139Fault offset: 0x00000000000ecf30Faulting process id: 0xa60cFaulting application start time: 0x01d4abf3646ee005Faulting application path: C:\Program Files\QLogic Corporation\QCSR\QCS.exeFaulting module path: QLogic Corporation\QCSR\QCS.exeReport Id: a22e7ec6-17e6-11e9-8123-00074329ad08Faulting package full name:Faulting package-relative application ID: All systems are running Windows 2012 R2 which are kept up to date and patched monthly. Any thoughts?
QLogic Control Suite - crashes on startup