Don't use the TEMP folder in Windows, and don't start the DesktopOK.exe from the zip folder.
If you don't start the DesktopOK from the Windows Desktop, at best create a separate folder for DesktopOK and unzip the DesktopOK.exe into this folder. (... see Image-2 Arrow-1)
Important: At Windows-Vista, Windows 7, 8, 8.1, Windows-10 an higher, never start DesktopOK directly from:
for example C:\DesktopOK.exe
See also: .... Save the DesktopOK setting in the Windows Registry.
To- how to uninstall the Freeware DesktopOK:
FAQ 11: Updated on: November 5th 2015 19:08