Some tenants will require re-authorization of Avanan to connect to their Microsoft 365 account.
As previously mentioned, a small infrastructure upgrade is taking place so that all Avanan tenants will utilize Microsoft Modern Authentication.
While most tenants are already upgraded, to complete the process a number of tenants will be required to re-authorize Avanan to connect to their Microsoft 365 account.
Administrators of these tenants will see a pop-up message when logging into Avanan prompting them to initiate the re-authorization.
This is a very short 2-click-20-second process, during which no impact on email delivery or security is expected.
Please be sure to click Re-authorize now when you see the pop-up.