How to fix “The website does not support SharePoint Online credentials. The response status code is ‘Unauthorized'”

This post was most recently updated on August 26th, 2022. Whilst running some SharePoint Online PowerShell commandlets, or connecting to a SharePoint Online site from your app, you get the following (or similar) error about your SharePoint Online credentials being unauthorized for something you should definitely be authorized to do: Cannot contact web site ‘https://[tenant]-admin.sharepoint.com/’ or the web site does not support SharePoint Online credentials. The response status code is … Continue reading How to fix “The website does not support SharePoint Online credentials. The response status code is ‘Unauthorized’”