AADSTS5000228 blocking Partner Center registration — request old tenant cleanup

Question

I am trying to register on Microsoft Partner Center using tenant axltecptyltd.onmicrosoft.com. Every sign-in attempt is blocked with error AADSTS5000228 — access denied to tenant 7ac4df4e-a945-450a-935e-6e2b987b7c01.

A previous incomplete Partner Center registration exists on an old tenant axltec.onmicrosoft.com which I no longer use. This old registration is blocking the new tenant from completing enrollment.

Please delete or disassociate the partial registration on axltec.onmicrosoft.com so that axltecptyltd.onmicrosoft.com can complete MPN registration.

Correlation IDs for reference:

• 019d2fd3-51cd-7123-86c7-d38988481559 (27 March 2026)
• f8ac5216-74ca-40a1-91db-bd1d49942ac8 (29 March 2026)
• Blocked tenant ID: 7ac4df4e-a945-450a-935e-6e2b987b7c01

Company: AXLTEC (Pty) Ltd Email: ******@axltecptyltd.onmicrosoft.com

Answer 1

Partner Center tenant linking, cleanup, and AADSTS5000228 handling cannot be performed through documentation-only steps and requires direct Microsoft support intervention.

The available guidance in context covers:

• Removing additional tenants from an existing Partner Center account (but not force-cleaning or moving an incomplete Partner Center registration between tenants).
• Handling tenants that are blocked or inaccessible due to inactivity (AADSTS5000225), where the documented path is to contact Microsoft support for reactivation or accept deletion after the retention period.

For a scenario where an old, unused tenant with an incomplete Partner Center registration is blocking Partner Center enrollment for a new tenant, the only supported path is to open a support case with Microsoft so that the Partner Center and identity support teams can:

1. Validate ownership of both tenants and the organization.
2. Review the existing Partner Center enrollment state on the old tenant.
3. Perform any necessary backend cleanup or disassociation of the old registration.
4. Confirm that the new tenant can then be used for Partner Center registration.

Because tenant-level cleanup and Partner Center enrollment state changes are not self-service operations, this cannot be resolved by configuration changes in the portal alone.

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References:

• Add and manage multiple tenants in your Partner Center account
• Tenant inaccessible due to inactivity