Access to Microsoft account is denied, but I am the account holder and administrator.

Some clarifying questions would be helpful

1. What subscription do you have?
2. How many users on that subscription?
3. How many administrators are there?
4. Were you able to admin before?
5. When do you think the changed happened if you were able to before?
6. What do you see when you login?

Regards

Hi @Gavin Shore

Based on your description and the category selected, I understand that you may be referring to a Microsoft 365 business account. 

To better understand your issue, could you please share a screenshot of the error message you are receiving? Please make sure to hide any personal, organizational, or other sensitive information. 

Additionally, could you please confirm: 

-Whether you are signing in with the correct work or school account. 

-Whether you are using the original administrator account, such as ******@tenant.onmicrosoft.com.  

If you are the only administrator and have lost access to the administrator account, you may need to contact Microsoft Support to go through the appropriate administrator account recovery process. 

You can find the support phone number for your region here: Customer service phone numbers - Microsoft Support.

Q. Can you tell me if you are calling as a home user who uses a product or service at home or a business user who uses it in your business to provide the best assistance? 
A.I am a business user. 
Q. Thank you. Can you give me the details of your inquiry? 
A. Login technical support. 
Q. First of all, can you tell me which products you are inquiring about today? 
A. Microsoft 365 business Standard。 
Q. Please wait a moment, I understand Microsoft 365. Are you calling about a new case or an existing one? 
A. New. 
Q. To receive phone support, your phone number must be associated with your Microsoft 365 admin profile. To do this, go to aka.ms/m365profile. Again, it aka.ms/m365profile . This can take 48 hours. In the meantime, you can go to aka.ms/m365profile and file a case online. If you prefer, you can also text the link to the phone number you are calling. What do you think? 
A. The phone number is already linked to the link. 
Q. Can you tell me about the products in your inquiry? 
A. Microsoft 365 Business Standard. 
Q. Are you a Global Administrator? 
A. That's right. 
Q. I'm sorry. I didn't understand. Are you a global administrator for your domain? 
A. Yes, I am a global administrator for the domain. 
Q. If you have any inquiries, you can contact a Microsoft representative. Are you sure? 
A. Yes. Please. 
Q. Yes, I understand. Please wait a moment.

Please note that this team is always overwhelmed, so you might need to wait for them to call you, this should take 3-10 working days. I know that this is not a convenient solution to hear but it seems to be the only way, and it's recommended that you should have a secondary/backup Global Administrator to fix this issue on your own.    

2.If you are unable to reach the appropriate support team by phone, you can consider directly submitting a support request as a helpful workaround:      

-Create a temporary Microsoft 365 tenant using a trial license: Go to Microsoft 365 Business Plans and Pricing and click Try for free to set up a temporary Microsoft 365 tenant with a trial license.      

-Use this new account to sign in to the Microsoft 365 Admin Center and submit a support request on behalf of your primary (locked) account.     

-Select the Help & support (headset) icon >If Support Assistant is enabled, turn it off >Type contact support in the search box >Select Contact support, then choose Phone or Email to submit your request.

Note: This method does not require you to use the new account for your business. Instead, it allows you to create a temporary administrator account that can be used to submit a support request regarding your primary Microsoft 365 tenant if you are unable to access or manage it with your current administrator account. The trial account is free for one month. Be sure to delete it after submitting your support request to avoid any automatic renewals or charges from Microsoft.      

For further instructions, you can follow this guide: Get support - Microsoft 365 admin | Microsoft Learn.       

If the answer is helpful, please click "Yes". If you have extra questions about this answer, please click "Comment". 

Note: Please follow the steps in the forum documentation to enable e-mail notifications if you want to receive the related email notification for this thread.