AzureAD guest users also affect email flow. When things go wrong, emails your organization is sending will be unintentionally forwarded to a different address than they were sent!
Read More AzureAD guests & email forwarding
I hade a need to export, import and edit a Sharepoint list with hundreds of thousands of items. This is how I solved it with the Powershell.
Read More Using GraphAPI for exporting, importing and editing gigantic Sharepoint lists
Are you missing Install Button in your Microsoft Store? It might be due to a disabled Microsoft Store Install Service.
Read More Windows 10 Microsoft Store & Missing Install Button
Back to Microsoft 365 and Powershell! This time an example on creating mailbox folders with GRAPH API.
Read More Batch create mailbox folders with GRAPH API
Office 365 ATP & Quarantine might not always work as described. Remember to test and understand your settings and how they affect your users and business!
Read More Office 365, ATP & Quarantine – Be aware of the false positives!