After performing any operation in the Password Manager PMSelfService site, waiting 3-4 minutes, and then trying any operation, the PMSelfService site shows only a spinning loading icon.
The site does not recover until it is refreshed.
On the browser's Developer Tools/Inspect screen, we see the following error:
PUT https://passwordmanager.domain.com/PMSelfService/api/Login/RefreshToken 405 (Method Not Allowed)
The optional WebDAV Publishing
component is installed on the IIS Server host.