Hi @Ksenia
The following sign-in options are not currently supported by the Microsoft 365 Developer Program:
- Phone number.
- Email account with *.onmicrosoft.com domain.
If you're signed in with one of these options, you'll get an error message and will need to sign in with a supported email account. For more information, see **What account can I use to sign up for the Developer Program?
**
Qualifying Microsoft 365 Developer Program members can set up a Microsoft 365 E5 developer subscription for use in building solutions independent of your production environment.
For information on how to join the Microsoft 365 Developer Program, see this document.
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