Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Latest Windows updates now seem to have fixed the problem for me, but I did also have to disconnect and reconnect my Work or school account:
Go to Settings >Accounts >Access work or school, disconnect the account, then click on Connect in front of Add a work or school account and follow other on-screen prompts to connect your device with Azure.