Hello @Remodeller 

The best way to solve this problem is to contact Support. They have all the tools in solving this:

Support: https://www.webroot.com/us/en/about/contact-us

Business Support: https://www.webroot.com/us/en/business/support/contact

Note: When submitting a Support Ticket, Please wait for a response from Support. Putting in another Support Ticket on this problem before Support responses will put your first Support Ticket at the end of the queue.

Hello @Remodeller 

Can you try to install in Safe Mode with Networking to see if it will install?

https://support.microsoft.com/en-us/windows/advanced-startup-options-including-safe-mode-b90e7808-80b5-a291-d4b8-1a1af602b617

Please follow the steps below closely in terms of installing WSA on the target system/machine!

• Make sure you have a copy of your 20 Character Alphanumeric Keycode! Example: SA69-AAAA-A783-DE78-XXXX
• KEEP the computer online during the install to make sure it works correctly
• Download a Copy Here (Best Buy Geek Squad Subscription PC users click HERE). Let us know if it is the Mac version you need
• Install with the new installer, entering your Keycode when prompted to do so in the install process
• Let it finish it's install scan
• Reboot

If this doesn’t work then please contact Webroot support like @ProTruckDriver suggested!

Thanks,

Hello @Remodeller 

Did you have any success and did you get it sorted?

Thanks,