Problem
Users report an error when they try to report a false positive or spam, or they try to block a message using the Outlook Add-In.
Error sample:
Legacy Exchange online tokens have already been turned off by Microsoft for most tenants and the PowerShell workaround has also been disabled.
Solution:
You need to deploy new permissions using the following link
If you're a direct Vircom client, you just need to do this from your Office365 org admin account.
If you're an MSP with multiple clients/orgs on Office365, you would need to do this once for each one in Office365.
Simply click on the link below using the Office365 tenant org admin:
Once logged in 365 you will get the following, click on Accept
Once completed you will be redirected back this current KB article and the Add-in should be running properly. We recommend the users to close and re-open their Outlook to have the new version loaded.