Error "Host_SingleInstance" on installing Acrobat DC

[OWB2021]

I have purchased the acrobat dc pro and get a message box  "Host_SingleInstance" after I click "YES" to allow it to make changes, any help

i have tried chat and get nothing, it is not working

[kglad]

restart your computer and retry installing.

if that fails,

what's your os?

are you installing the acrobat dc subscription?

[OWB2021]

windows 10

yes subscription

[kglad]

uninstall all reader and acrobat versions using your control panel

clean per Download Adobe Reader and Acrobat Cleaner Tool - Adobe Labs

use the cc desktop app from here https://creative.adobe.com/products/creative-cloud to install your acrobat dc subscription.