pebcak

I had a similar issue and had to change to a Windows administrator user. Once I did that the login box actually let me log in and the software installed. Just typing in an admin’s password is not enough, your current user has to be an admin. It’s pretty awful on HTC’s part but at least it worked.

It looks like the latest SteamVR beta might have the patch: "The SteamVR Beta has been updated with the following changes. Gamepads: Fixed issue with gamepads going into “standby” mode even though buttons are being pressed on the gamepad. HTC Vive Pro: Firmware update which improves audio quality." https://steamcommunity.com/games/250820/announcements/detail/1658889742644238659