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Hello @Lawdie Inc
Unfortunately, there isn't a supported way to transfer an App Registration from one Microsoft Entra tenant (or Microsoft account) to another. App registrations are tenant-scoped, so if you're moving from a personal tenant to a business tenant, you'll generally need to recreate the app registration and update your application with the new Client ID, Tenant ID, and credentials.
For your scenario, I'd recommend:
- Create a new app registration in the business tenant.
- Reconfigure the required API permissions, redirect URIs, certificates/secrets, branding, and authentication settings to match the existing app.
- Update your application to use the new app registration.
- If you're using WOPI, verify that the new application is registered and trusted by Microsoft 365 for the Business tenant, then update any WOPI endpoints or integration settings accordingly.
If the resources you're referring to are Azure resources (subscriptions, storage accounts, Key Vaults, etc.), some of those can be moved between subscriptions or even tenants, but Microsoft Entra app registrations themselves cannot be migrated.
If Microsoft Support referred you to Azure Support, it's likely because they need to confirm whether any tenant-specific aspects of your WOPI integration require additional steps. It would also help if you could clarify:
- Is your "personal account" a personal Microsoft account (MSA), or a Microsoft Entra tenant that you own?
- Are both accounts in separate Microsoft Entra tenants, or are they users within the same tenant?
That distinction will determine the available migration options.
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