Office 365 business standard 1 user

Simic Advisory 20 Reputation points
2026-07-03T19:53:49.0733333+00:00

I have purchased Business standard for 1 user. I have activated the account with key I had purchased. I received an email with a domain name which has my company name followed by .onmicrosoft.com. Also received a Primary Tenant Id #. I went to logon on with the password I had set. I then received error messages which says account doesn’t exist. I have tried account recovery online and no progress. I have tried the support number for the UK. The AI reponse tells me I am not the authorised administrator. This is a one person licence! I have not been able to speak to a person. Any ideas on what to do next?

Microsoft 365 and Office | Install, redeem, activate | For business | MacOS
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Answer accepted by question author
Anonymous
2026-07-03T20:19:39.1766667+00:00

Good day,

Thank you for reaching out, and I'm sorry to hear about the difficulties you've experienced accessing your new Microsoft 365 Business Standard subscription. 

When you first purchased your subscription, Microsoft sent a confirmation email to the email address you used during the purchase process. 

Since you mentioned that you received an email containing a domain name in the format yourcompany.onmicrosoft.com, that email should also contain the details of your Microsoft 365 administrator account, which typically follows this format: ******@yourcompany.onmicrosoft.com.

Please use this administrator account to sign in to the Microsoft 365 admin center and manage your tenant. 

Note: The email address used to purchase the subscription and receive billing notifications is often different from the administrator account that must be used to access the Microsoft 365 Admin Center for a business subscription. 

If you are still unable to access the Admin Center, please send me the following information via private message: 

  • The email address you are attempting to sign in with 
  • A screenshot of the exact error message you are receiving 

Once I have those details, I'll be happy to investigate further and assist you with the next steps. 

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User's image

I look forward to your reply and will be happy to help further. 

Warm regards.


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