Panic upgrading tools for UR824

Hi, I’m actually unable to use my UR824 Applications (including dspMix).
I downloaded the new Tools for UR824 to update it and start the installation. When it starts to remove the old application a message appears: “desired characteristics is on an unavailable network resource, Clik OK to retry or specify another folder with installation pack UR824 Application64.msi”
if abort it says: “Older version of steinberg ur824 apllication cannot be removed.”
The worst thing now is that all the older applications don’t work! Even the dspMix! If I click on it, it starts a new installation process.

Tried to unistall Ur App with CCleaner but nothing changed
Cheers, Alex

Windows 10, V.1909