Teams Disaster; unable to use after purchasing a one year license

Hi @EParksJr,

Teams is primarily a front-end that surfaces content stored elsewhere in Microsoft 365: for example, channel files actually live in the team’s SharePoint site (not inside the Teams app), so they can often be deleted or recovered via the SharePoint/OneDrive recycle bins, while chat and channel posts may be removed or preserved based on retention policies configured by admins; as a result, the right recovery approach depends on what’s missing (files vs. messages) and whether the underlying Team/Microsoft 365 Group still exists. 

Here are some workaround you can try: 

Scenario 1: If you can still access the Team/Channels (even if they look blank) 

1) Go after the files via SharePoint 

1. In Teams (web if possible), open the channel > Files/Shared tab 
2. Choose Open in SharePoint 
3. In SharePoint, open Recycle bin and restore files/folders if present  

If you don’t see it in the first recycle bin, check the second-stage recycle bin (SharePoint exposes this at the bottom of the recycle bin page). This is often where “missing” channel folders end up. 

2) If posts are missing but files exist 

That often points to: 

• You’re signed into the wrong account/tenant, OR 
• Posts were removed by retention/compliance policy  

Quick sanity check: use an InPrivate/Incognito browser window, go to Teams on the web, and sign in with the exact work account you used when creating the Team. 

To learn more, please visit: 

• Delete and recover files in Microsoft Teams 
• Learn about retention for Microsoft Teams 

Scenario 2: If the whole Team/Group was deleted (or appears “empty” because the Group is gone) 

Microsoft 365 Groups (which back Teams) are typically soft-deleted for 30 days and can be restored with their content (SharePoint files, etc.). 

How Group restore works (key points): 

• Deleted Microsoft 365 Groups are retained for 30 days (soft-delete).  
• Restoring the Group restores associated content including SharePoint site and files (and other group resources).  

Restore path (requires admin access): 

• Microsoft 365 admin center > Groups > Deleted groups > select group > Restore  

Here’s a resource that provides more insight: Restore a deleted Microsoft 365 group 

Scenario 3: If your xxxxx.onmicrosoft.com sign-in is “no longer recognized” 

If the only admin account is now unrecognized, your best route is Microsoft tenant/account recovery via Support / Data Protection. 

Option 1: Contact Microsoft Data Protection Support by Phone (Primary Method)       

If you're the only admin, in this situation, the Microsoft Data Protection Team has tools and processes in place to verify identity and regain access to administrator accounts. You can try reaching out to our Global Customer Service phone to raise a request for resetting your authentication method here: Customer service phone numbers - Microsoft Support.    

Please note that forum moderators and advisors do not have access to user account settings and cannot assist with logging in, resetting passwords, or changing access rights.  

Here are some tips and an example of a prompt to help you navigate the IVR more effectively:         

• IVR: What kind of problem are you concerned about?       
• You: Authenticator.       
• IVR: What products do you use?    
• You: Office 365 for business.    
• IVR: Education or company account?    
• You: For companies   
• IVR: Are you an administrator?    
• You: Yes.   
• IVR: Are there any other administrators in your organization?    
• You: No.    
• IVR: Do you need a... Service request?    
• You: Yes. I need to create a ticket. Please send me directly to the Data Protection Team.    

Option 2: Create a Temporary Account (Trial Tenant) to Submit a Support Ticket (Alternative Method)      

If you cannot reach a live agent, there is still a workaround, you might consider registering for a new tenant by signing up for a trial subscription.   

To set up a new tenant, please follow these steps:    

Visit Microsoft 365 Business Plans and Pricing | Microsoft 365. This would allow you to create a new tenant following the prompts provided. Once set up, you can access the admin console of the new tenant and submit a support ticket requesting to speak with the Data Protection team on behalf of your previous tenant.   

Follow the guided setup process to create a new account for a new tenant.   

Once your tenant is created, you should be able to access the support portal and submit your ticket referencing your locked account without further issues.   

In your ticket description, you'll need to clearly explain that you're trying to regain access to your previous Microsoft 365 tenant and need help from the Data Protection team.  

Regarding your question, it's possible to reset Teams completely and perform a new installation. 

1) Clear Teams cache for both Classic and New Teams. 

Please try clearing the Teams cache (Classic and New Teams). This often helps fix performance and sign-in issues. Steps can be found here: Clear the Teams client cache 

2) Fully uninstall (clean slate) 

If you’re on Windows, Microsoft notes you may need to uninstall two items: 

• Microsoft Teams 
• Teams Machine-Wide Installer (if present)  

If you specifically want to remove Teams classic remnants (to stop “reverting” behavior), Microsoft provides a detailed manual uninstall guide for classic Teams scenarios.  

You may find further guidance here: 

• Uninstall Microsoft Teams 

After uninstall, reinstall New Teams from Microsoft’s official download path, then sign in with the correct work account. You can download Microsoft Teams in this link: https://www.microsoft.com/en-us/microsoft-teams/download-app  

Note: Please understand that my initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.  

I hope this information is useful. Additionally, as other users have raised similar concerns and may not be aware of where to share their feedback, I hope this response helps clarify the situation and suggests a potential next step. Highlighting this information can make it more visible to others in the community who may be facing the same issue, making it easier for them to find guidance and contribute their feedback as well. 

Thank you again for your time and for raising this important usability concern. If you have any further questions or need additional assistance, please don’t hesitate to reach out. 

I look forward to your thoughts on this. 

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".      

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

The issues described (loss of access to the Teams Essentials tenant, missing data, and subscription cancellation) cannot be fully diagnosed or fixed with self-service steps based on the available information. However, the following points from the context apply:

1. If sign-in to Teams fails or the original *.onmicrosoft.com account is no longer recognized, there may be a problem with the Microsoft 365 domain or account configuration. In that case, only the tenant’s IT admin or Microsoft support can investigate and restore access. The guidance is to contact the admin or Microsoft support directly for domain/account issues that prevent sign-in.
2. When Teams (including Teams Essentials) is not working or behaves inconsistently across devices (desktop vs. web), the recommended troubleshooting steps are:
   • Check with the IT admin for policy, license, or access issues.
   • Restart Teams.
   • Try Teams on another platform (for example, go to https://teams.microsoft.com in a browser and sign in again).
   • Update Teams, or uninstall and reinstall the Teams client.
   These steps can help with client-side problems, but they will not recover data if the underlying tenant or subscription is misconfigured or inaccessible.
3. Teams Essentials data (channels, posts, files) is stored in Microsoft 365 services (Teams/SharePoint/OneDrive) under the tenant associated with the subscription. If the tenant or primary account is no longer accessible or has been changed, only Microsoft support can confirm whether the data still exists and re-establish access.
4. The context provided does not include the specific procedure to cancel a Teams Essentials subscription or to perform a full tenant reset. Those actions must be done through the Microsoft 365 account/subscription portal or by working with Microsoft support.

Given the symptoms (tenant sign-in failure and missing data), the practical path is:

1. Contact Microsoft 365/Teams support with:
   • Purchase date and proof of the Teams Essentials subscription.
   • The original *.onmicrosoft.com tenant name and all email addresses used.
   • A clear description that Teams Essentials data (channels/files) is missing and the tenant is no longer recognized.
2. Ask support to:
   • Verify the status of the Teams Essentials subscription and tenant.
   • Restore or correct the tenant/account so that sign-in works again.
   • Confirm whether Teams channel data and files are still present and reattach them to the active tenant/account.
3. After access is restored, if the desktop client continues to revert to a different Teams experience, uninstall all Teams clients on the device and reinstall the current Teams app, then sign in only with the Teams Essentials account.
4. If the decision is to stop using Teams Essentials, request guidance from support or use the Microsoft 365 subscription management portal to cancel the subscription. This may affect access to stored data, so it is important to clarify data retention and export options with support before canceling.

References:

• Why am I having trouble signing in to Microsoft Teams?
• Teams for Education is not working
• Microsoft Teams Essentials: Frequently asked questions