Problem

You are migrating to OneDrive, and noticed the following error:
Cannot Find the default document Library. Please check the permissions for the migration account

Cause

The account configured in the One Drive connector doesn’t have rights to access the user’s One Drive.

Resolution

  1. Run the PreProcessing task to set the permissions
  2. or Assign the permissions manually. For this, follow up this article.
NOTICE

Your account of migration should be at least SharePoint Administrator and have a valid Office 365 license.
Global (tenant) admin works also fine.