A 400 Bad Request is an HTTP status code that indicates the server cannot or will not send the requested data, or in this case, it's likely because of a problem with UpToDate.
In most cases, a 400 Bad Request can be resolved by contacting the provider for more information. Here are some steps to take:
- Check your internet connection and ensure that you're connected to the same network as UpToDate.
- Make sure that the browser and device you're using are up-to-date.
- Clear any cached data in your browser. This can usually be done by pressing Ctrl+Shift+Delete on Windows or Command+Option+Esc on Mac.
Additionally, if you've recently downloaded a new app or extension that may have been affected by the problem, try uninstalling it and see if the issue persists.
https://sso.uptodate.com/page-not-found