Whenever I unlock my system my Teams showing me offline.

Dear Uddhav Patil, Thank you for posting in Microsoft community. Apologies for the inconvenience caused to you by this behavior.Based on your description, seems like you already did multiple troubleshooting steps, you can also clear Teams cache to check if issue resolved or not.Clear Teams cache - Microsoft Teams | Microsoft LearnTo further resolve this, Microsoft’s support team will need to step in. A technical support engineer can perform a remote session to investigate the situation, verify the backend configurations, and run any necessary synchronization tools to resolve the problem. If the issue requires further attention, they can escalate it to a specialized team for deeper analysis. Please follow the steps to get Teams mobile app log. Send diagnostic log files from Microsoft Teams mobile app - Microsoft SupportAs forum moderators, we don’t have access to the detailed logs or backend systems needed to troubleshoot this effectively due to privacy and security constraints. For that reason, the most efficient solution would be to contact Microsoft’s support team directly.

For the standard procedure outlined above, Office 365 global administrators may need to contact the Office 365 support team by submitting a service request.

Here’s what your Office 365 Global Admin should do next:

1. Submit a Service Request: The Global Admin should create a service request with Microsoft support to get advanced technical assistance and diagnostics. For detailed instructions on how to get support, please refer to Get support - Microsoft 365 admin.
2. Find Your Microsoft 365 Admin: If you’re unsure who the Global Admin is within your organization, you can find guidance on locating them here: How do I find my Microsoft 365 admin? - Microsoft Support.
3. Call Microsoft Support: For additional assistance, use this link to find the appropriate contact number: Global Customer Service phone numbers - Microsoft Support
4. **Contact a Reseller (if applicable):**If your Office 365 subscriptions are managed through a federated partner or reseller and the Global Admin cannot open a service request, they should contact the reseller’s support provider. The reseller can assist with initiating the request and coordinating with the Office 365 support team.

Note: If you’re an end-user, please coordinate with your Office 365 Global Administrator to handle these steps. Thank you very much for your valuable time and your cooperation. 

Sony-T MSFT | Microsoft Community Support Specialist

Dear Uddhav,

Thanks for posting in the Microsoft community.

I can understand your Microsoft Teams goes ''offline'' from available after unlocking my system.

I totally understand the inconveniences this may have caused you and I am willing to assist.

I have also seen that You have gone several troubles shooting steps to resolve this issue.

Firstly, May I know If you are using Teams for Personal or Business? Does this also happen on other PC or just this the PC you are currently using?

Please note that whenever your computer is on sleep mode, it is normal that your teams will detect that you're offline. In this case, you'll have to make sure that your computer does not automatically go to sleep mode when locked or idle.

To adjust your sleep settings, go to Start and select Settings > System > Power & Sleep. Under “Sleep,” set it to "Never" if you want to stay online.

Additionally, please make sure that your background application for Teams is enabled. To do that, Go to your Team's ''Settings'' ''General'' make sure "open Application in Background" is enabled.

Please do not hesitate to contact me If you need further assistance.

Best wishes,
Obyziotta / Microsoft Community Support