A free program from Microsoft that provides developers with the tools, resources, and sandbox environments needed to build solutions for Microsoft 365.
Hi Robert Young
Thank you for reaching out to the Microsoft Q&A Forum and sharing your issue.
Based on your description, it appears you previously tried to sign up for the Microsoft 365 Developer Program. Even though the application wasn’t approved, your phone number may still be linked to that earlier attempt in the system.
You can try visiting Dashboard - Microsoft 365 Dev Center using the account that was originally linked to your phone number. If you still have access, choose Delete Profile to remove the old Developer profile. This may help release the phone number so you can use it again for a new registration. Please note that it can take some time, usually up to 60 days, before the number becomes available for reuse. This waiting period is an intentional policy designed to prevent abuse of the program.
If you no longer have access to the old profile or the steps above do not work, I recommend contacting Microsoft Developer Support for further assistance through the following link: Services Hub. Please note that this portal (Services Hub) is a paid ticket and access is subject to certain conditions, which you can review here: Services Hub sign in FAQs | Microsoft Learn
If you need to join the Microsoft 365 Developer Program sooner, the fastest option would be to register using a different phone number.
Please note that this forum is a peer-to-peer community, so while members can share advice and experiences, we do not have access to the internal systems required to unlink phone numbers from existing accounts due to privacy and security constraints.
Thank you for your understanding.
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