Hello First of all, sorry if this is the wrong category - I wasn't quite sure, but WinBio is part of the security features of Win7. I'm running Windows 7 RTM and I'm having problems with a crash in the WinBio service. I was trying to debug a C# application I've made which make use of the WBF, but I kept encountering an exception which I could not catch. I attached the Visual Studio debugger to the WinBio service process to see if something was going wrong further up the chain. I found that when I scan a finger or even simply tap the FP reader, an exception was thrown within the service. Below is an output log from the debugger: 'svchost.exe': Loaded 'C:\Windows\System32\svchost.exe' 'svchost.exe': Loaded 'C:\Windows\System32\ntdll.dll' 'svchost.exe': Loaded 'C:\Windows\System32\kernel32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\KernelBase.dll' 'svchost.exe': Loaded 'C:\Windows\System32\msvcrt.dll' 'svchost.exe': Loaded 'C:\Windows\System32\sechost.dll' 'svchost.exe': Loaded 'C:\Windows\System32\rpcrt4.dll' 'svchost.exe': Loaded 'C:\Windows\System32\wbiosrvc.dll' 'svchost.exe': Loaded 'C:\Windows\System32\advapi32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\user32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\gdi32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\lpk.dll' 'svchost.exe': Loaded 'C:\Windows\System32\usp10.dll' 'svchost.exe': Loaded 'C:\Windows\System32\ole32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\version.dll' 'svchost.exe': Loaded 'C:\Windows\System32\setupapi.dll' 'svchost.exe': Loaded 'C:\Windows\System32\cfgmgr32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\oleaut32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\devobj.dll' 'svchost.exe': Loaded 'C:\Windows\System32\vaultcli.dll' 'svchost.exe': Loaded 'C:\Windows\System32\crypt32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\msasn1.dll' 'svchost.exe': Loaded 'C:\Windows\System32\netapi32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\netutils.dll' 'svchost.exe': Loaded 'C:\Windows\System32\srvcli.dll' 'svchost.exe': Loaded 'C:\Windows\System32\wkscli.dll' 'svchost.exe': Loaded 'C:\Windows\System32\samcli.dll' 'svchost.exe': Loaded 'C:\Windows\System32\wtsapi32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\secur32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\sspicli.dll' 'svchost.exe': Loaded 'C:\Windows\System32\credui.dll' 'svchost.exe': Loaded 'C:\Windows\System32\imm32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\msctf.dll' 'svchost.exe': Loaded 'C:\Windows\System32\avgrssta.dll' 'svchost.exe': Loaded 'C:\Windows\winsxs\amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7600.16385_none_fa645303170382f6\comctl32.dll' 'svchost.exe': Loaded 'C:\Windows\System32\shlwapi.dll' 'svchost.exe': Loaded 'C:\Windows\System32\RpcRtRemote.dll' 'svchost.exe': Loaded 'C:\Windows\System32\wintrust.dll' 'svchost.exe': Loaded 'C:\Windows\System32\WinBioPlugIns\upkbu.dll' 'svchost.exe': Loaded 'C:\Windows\System32\WinBioPlugIns\winbiostorageadapter.dll' 'svchost.exe': Loaded 'C:\Windows\System32\bcrypt.dll' 'svchost.exe': Loaded 'C:\Windows\System32\cryptsp.dll' 'svchost.exe': Loaded 'C:\Windows\System32\rsaenh.dll' 'svchost.exe': Loaded 'C:\Windows\System32\cryptbase.dll' 'svchost.exe': Loaded 'C:\Windows\System32\bcryptprimitives.dll' The thread 'Win64 Thread' (0xe28) has exited with code 0 (0x0). First-chance exception at 0x000007fefd5faa7d in svchost.exe: Microsoft C++ exception: Error at memory location 0x0129ee08.. First-chance exception at 0x000007fefd5faa7d in svchost.exe: Microsoft C++ exception: Error at memory location 0x0129c5e8.. The thread 'Win64 Thread' (0x19a8) has exited with code 0 (0x0). The two exception lines occurred when I tapped the reader. After a while, the service shutdown with the following: First-chance exception at 0x000007fefd5faa7d in svchost.exe: Microsoft C++ exception: Error at memory location 0x016ff758.. The thread 'Win64 Thread' (0x4c0) has exited with code 0 (0x0). 'svchost.exe': Unloaded 'C:\Windows\System32\WinBioPlugIns\winbiostorageadapter.dll' UPKBU |thread | 239|w|1a0c:13d0|121100.690| 01:39|releasing runaway foreign thread 00000000001AEE10 (id=1308) infra: unloading Module::Lock()'ed dll 'svchost.exe': Unloaded 'C:\Windows\System32\WinBioPlugIns\upkbu.dll' The thread 'Win64 Thread' (0x151c) has exited with code 0 (0x0). The thread 'Win64 Thread' (0x51c) has exited with code 0 (0x0). The thread 'Win64 Thread' (0x1330) has exited with code 0 (0x0). The thread 'Win64 Thread' (0xcbc) has exited with code 0 (0x0). The thread 'Win64 Thread' (0x13d0) has exited with code 0 (0x0). The program '[6668] svchost.exe: Native' has exited with code 0 (0x0). Does anyone know what the could be the problem here? Thanks Ally Popple