This usually means the SDK (communication components) didn't register. Go to the Bin folder in the installation directory and run Register_SDK.bat .

Despite newer ZKTeco software like ZKTime.Net or BioTime being available, many companies stick with the 2008 version because:

If you already have the file but it won't install or connect:

You can find the latest software and drivers on the ZKTeco Download Center .

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