Attempting to use the Dictate function of Learning Tools with OneNote produces this message:
Selected user account does not exist in tenant 'Microsoft Services' and cannot access the application 'fcc74c6f-680c-47ab-a0d5-6d070bfd93a8' in that tenant. The account needs to be added as an external user in the tenant first. Please use a different account.
Contacted MS Office tech support via chat: Case #1036035938
Via support controlling my machine, uninstalled Learning Tools and OneNote. Cleaned Registry. Reinstall did not fix problem. Note that dictate does work on the browser version of OneNote. Support person provided me with the link to this OneNote help page for further assistance.