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Win 10 cannot install virtual dog.
The driver is not compatible. You can check the device manager first, and the device status of SMS** and MultiKey** is abnormal. It can be preliminarily judged that the problem is caused by incompatible drivers.

1. Download the latest version of HASPU driver on the Internet, upgrade it, and then reinstall the driver of MultiKey.

2. Secondly, after restarting the system, check whether there is a virtual USB MultiKey device (generally in the "system device"); If it exists, please start EPLAN and try whether the dongle is connected successfully.

3. Finally, if it is still unavailable, please press and hold the SHIFT key when clicking the "Restart" button to enter the recovery mode of WIN 10, turn off the "Driver Mandatory Signature", and reinstall the driver of MultiKey after restarting.