Common runtime errors and fixes
Copy zkemkeeper.dll and from the SDK folder. Navigate to C:\Windows\SysWOW64 . Paste all the copied files into this folder. Case B: If utilizing the native 64-bit SDK release zkemkeeper.dll install 64 bit
Why? If set to Any CPU , the application compiles as a 64-bit process on 64-bit Windows. It will look for zkemkeeper.dll in the 64-bit registry hive and fail to locate your 32-bit registration. 2. Adding the Reference Common runtime errors and fixes Copy zkemkeeper
3. "Class not registered" Error in Visual Studio / Application zkemkeeper.dll install 64 bit
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Complete Guide to Installing zkemkeeper.dll for 64-bit Systems
Many ZKTeco SDK packages include a Register_SDK.bat or Auto-install_sdk.exe file.