Dear sandeep,
Good day!
Thank you for posting to Microsoft Community. We are glad to assist.
As per your mentioned description about "how to recover my old loss contoso.com id and password" kindly note this is very sensitive and should not be discussed here in a public forum which is accessible to all Microsoft customers. We value your organization’s security and privacy; If your account is Microsoft365 Work/School account and if you are end user/if you are admin but other user has admin rights, it is suggested to contact your admin and ask admin to reset password for your account. Admin can do it by follow Manage user authentication options. (if you are not sure who is your admin, can refer this How do I find my Microsoft 365 admin? - Microsoft Support).
If there is no other Global Admin is available, we sincerely recommend that you contact our dedicated data protection support team directly via phone support Find Microsoft 365 for business support phone numbers by country or region - Microsoft 365 admin | Microsoft Learn. They are the only responsible and privileged support team for account related queries. While phone call, press "1"as business email user and press "1" again as technical support. You also need to provide your subscription purchased information such as company name, billing information, phone number, alternative email address etc. So, our data protection team can assist you in recovering your old account, and regaining access to your account. Our Data Protection Team will ensure that your organizations data is secure and will remain private.
If your account is Microsoft personal account (outlook.com/live.com/Hotmail.com), please reply back to us, so we can involve personal account team for further assistance. Thank you so much for your precious time and co-operation.
Best regards,
Inema |Community Moderator
