An alternative way to uninstall spacedesk is using the spacedesk msi installer file.

Step 1: Run the setup installer

Run the spacedesk setup installer.

spacedesk_driver_Win_10_32_v2121.msi for x86 platform 

spacedesk_driver_Win_10_64_v2121.msi for x64 platform

Step 2: Click the remove button

After selecting the Remove button, just click Next until it uninstallation completed.

Starting on version 0.9.9.z.25, reboot is not needed anymore in Windows 10 machine.

Step 3: Reboot (Windows 8.1 only)

After the uninstallation has completed, reboot the computer before proceeding with any other task.