Ensure that your application, the plcommpro.dll file, and your operating system are compatible. Many ZKTeco SDKs are 32-bit, so they must be placed in SysWOW64 on 64-bit Windows machines. Conclusion

Key capabilities provided by this library include:

Copy the plcommpro.dll file into the appropriate system folder based on your software architecture: For 32-bit software on 64-bit Windows: C:\Windows\SysWOW64\ For 64-bit software on 64-bit Windows: C:\Windows\System32\