Credential Errors Not Related to a Password
If you see invalid credentials errors after a password change, you might have an invalid credentials error for Microsoft users that is not related to a password change or expiration.
Microsoft identity platform lets administrators set token access lifetimes.
When a token expires, Nylas needs a new token to connect to the email server. You can review the expiration dates for tokens in Configurable token lifetimes in the Microsoft identity platform.