OAuth Access token is expired. Verify the OAuth configuration and click the 'Get OAuth Token' link below to request a new token.

[Jafrin Jack]

In my rest message I am getting the below pop-up. How to resolve this issue. Please suggest.

After clicking on the Get OAuth Token, it is just extending for 1hour

Default Grant type is client credentials
Authentication type - OAuth 2.0

[Daniel R2]

@Sukhbir Singh2 - We previously configured SMTP and IMAP email accounts with Microsoft Office365 using OAuth2

 However after a month, it looks like we are no longer receiving or sending emails on the email logs. Also on the email diagnostics, email receiving and email sending are both non-operational.

The only thing we can notice is that on System OAuth > Manage Tokens the access tokens have expired 

Should the expiry data automatically extend because they it has not done so yet. Can you please provide some guidance here.