SharePoint App and “Invalid JWT token” exception

Let’s say you have a SharePoint App deployed on SharePoint Online, in Microsoft Office 365, and working since many months ago. Suddenly, it stops working and when you try to access it, you get back an exception like this: System.IdentityModel.Tokens.SecurityTokenException: Invalid JWT token. Could not resolve issuer token. That’s what happened to me today (I […]

Read more