Run Windows Command Prompt and execute the following command
Regsvr32 C:\Windows\SysWOW64\zkemkeeper.dll
Then you will get a message saying that you registered that DLL file successfully.
SysWOW64 is a folder in C:\Windows path, and have all the DLL files required in your program, but you only need to register this zkemkeeper.dll file.
Run Your Exe/Program and test it.
Good luck!