Thanks for the feedback.
Could you please try the following:
1. Run services.msc find spacedeskService and check if it's running.
If spacedeskService is running, just right-click and Stop it.
2. Run devmgmt.msc, click View tab -> Devices by Connection, find spacedesk virtual HID Device.
Underneath spacedesk virtual HID Device, just right-click -> Uninstall all the devices (HID Keyboard Device, HIS-compliant mouse, HID-compliant touch screen, HID-compliant vendor-defined device).
After uninstalling all the devices below, uninstall the spacedesk virtual HID Device.
3. Uninstall spacedesk via any of the following:
Option 1: On C:\Program Files\datronicsoft, click the uninstall shortcut
Option 2: On Control Panel Program and Features, find spacedesk Windows Driver and uninstall it.
After the steps above, please reboot your primary machine then run the latest spacedesk Driver v0969 msi installer and try to install it.
Looking forward to your feedback.