Symptom
You run a migration to Microsoft 365, and you get the following warning:
Aborting migration job due to system maintenance. We will restart the job shortly
Details
This warning occurs when your tenant undergoes Azure maintenance during the migration.
Microsoft’s maintenance processes can be scheduled at any time for your tenant.
For more details about planned maintenance schedules that might affect your tenant, visit the Service Health—Microsoft Azure page.
To avoid missing data at the destination, we recommend that you restart any migration tasks that have encountered this warning, even if they show as 99% complete.
Note: This applies to both Normal mode and Insane mode migrations.