Hi. Validating JSON Web Token (JWT) with PowerShell - Made Of Things JWT: Ultimate How-To Guide With Best Practices In JavaScript But they will be more useful if they can carry information along with them. This is most likely because the validation method is trying to convert the long to an int and because it is unable to convert it, it simply returns a null as indicated in the documentation shown here. Here's how we can fix this. Payload - For carrying user data. JWT: Ultimate How-To Guide With Best Practices In JavaScript But wait, there’s more. Invalidate a JWT Token in .NET Core. URGENT SUPPORT NONURGENT SUPPORT Here's how we can fix this. Sadly, Andrés Montoya's answer has a flaw which is related to how he compares the object. I found a solution here which should solve this: cons... var token = jwt.sign ( {key_name:'key_value'}, "secret_key", { expiresIn: '24h' // expires in 24 hours expiresIn: '365d' // expires in 365 days }); Add Own solution. This member cannot be used by partially trusted code. I am using visual studio framework 4 and implementing JWT token signature validating and checking time expiry. Since the refresh token never expires, what happens if your phone is stolen? iat), which is added by default.\. How to decode a JWT token in .Net Core (C#) try { Serdar Sanri. How do you handle jwt token expiration? - Hashnode Revoking JWTs & JWT Expiration - FusionAuth