You must have the administrator privileges to install and uninstall Desktop OTP tool.
Ensure that you have installed one of the following operating systems:
Microsoft Windows 7 (32-bit and 64-bit)
Microsoft Windows 8.1 (32-bit and 64-bit)
Microsoft Windows 10 (v1709, v1803, v1809 or v1903 32-bit or 64-bit)
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2016