Account access depends on your organisation’s Microsoft 365 configuration and security policies.

Identify the sign-in problem

Record the application, account address, error message, and approximate time. Say whether this affects one device or all devices.

Use approved recovery

If your organisation has enabled self-service password reset, use its official process. If not, ask the authorised administrator or open a support request.

Lost an authentication device?

Contact support through an established channel. Identity verification may be needed before an authentication method can be reset.

Do not approve sign-in requests you did not initiate.