Migration Guides

Step-by-step migration guides

Practical, technical guides for every stage of your Microsoft 365 tenant-to-tenant migration.

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Planning

3 guides
PlanningBeginner

Pre-migration assessment

Audit your source tenant before starting — inventory mailboxes, identify problem items, and validate your destination tenant is ready.

⏱ 2–4 hours·6 steps
PlanningIntermediate

Resolving storage & licensing check failures

Understand and fix the pre-flight storage and licensing warnings that appear on the wizard review step before you launch a migration.

⏱ 30–60 minutes·8 steps
PlanningBeginner

Set up an Azure App Registration

Create and configure the Azure App Registration that TheMigrator uses to access your M365 tenant data.

⏱ 20–30 minutes·6 steps
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Email

2 guides
EmailIntermediate

Email migration step-by-step

Complete walkthrough for migrating Exchange Online mailboxes, calendars, and contacts between M365 tenants.

⏱ Varies — 1–8 hours per 100 mailboxes·7 steps
EmailIntermediate

Migrating shared mailboxes and resource accounts

Shared mailboxes, room mailboxes, and equipment mailboxes require different handling than user mailboxes. This guide covers each type.

⏱ 1–2 hours·4 steps
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SharePoint

1 guide
SharePointIntermediate

SharePoint migration step-by-step

Migrate SharePoint site collections, document libraries, lists, and permissions between M365 tenants.

⏱ Varies — depends on total data volume·6 steps
☁

OneDrive

1 guide
OneDriveBeginner

OneDrive migration step-by-step

Migrate personal OneDrive drives between M365 tenants, preserving folder structure, metadata, and sharing links where possible.

⏱ Varies — typically 2–10 hours per 100 users·6 steps
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Teams

1 guide
TeamsAdvanced

Teams migration step-by-step

Migrate Teams channels, message history, channel files, member rosters, and Teams Chat history between M365 tenants.

⏱ Varies — message history volume is the main factor·9 steps
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Cutover & DNS

1 guide
Cutover & DNSIntermediate

DNS cutover guide

How to update MX, Autodiscover, and SPF records to complete your tenant migration with minimal email disruption.

⏱ 2–4 hours (including DNS propagation)·8 steps
⬢

Device migration

1 guide
Device migrationIntermediate

Migrating Windows devices with the agent

Install the MigratorAgent on Windows endpoints and use FULL_MIGRATION to move devices from one tenant to another — automatically handling domain disjoin, Intune leave, cache clearing, reboot, and re-enrollment.

⏱ 15–30 minutes per device (plus reboot time)·8 steps

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