Can't install on Win 10

I’m logged in as administrator, have edited the registry so that I have Install as Admin on right click on the LO msi and still get “The system cannot open the device or file specified” when I run it.

I’ve tried all the googled suggestions on running as admin and none work, in desperation to get an office suite I tried Open Office, which installs from an exe and that gets the same prob.

Opera and Thunderbird both installed OK from their exes btw.

Thanks

John