Teams session terminating

Question

Attending Teams sessions scheduled by others (paying subscribers) and my session abruptly terminates in 12 to 15 minutes. The meetings are scheduled for one hour. And it is only me, other participants are able to continue. Why? Absolutely terrible and catastrophic function with no warning or reason.

Answer 1

Hi @maint,

Welcome to the Microsoft Q&A forum.

Thank you for taking the time to share your situation with us, I completely understand how upsetting it can be when you’re the only one getting disconnected from a Teams session around the 12–15‑minute mark while everyone else stays connected. Because the organizer’s license and meeting settings are working fine for other participants, this kind of pattern almost always points to something specific on the affected device, network path, or the local Teams client rather than the meeting itself.

To help you make sense of what’s happening, a repeated disconnect window like 12–15 minutes is commonly linked to a few underlying factors:

• Network path issues: such as packet loss, jitter, or traffic being routed through a distant egress point instead of going out locally.
• Firewall / proxy / TLS inspection: Teams media traffic is sensitive to deep inspection or forced proxying.
• VPN behavior: some always‑on VPNs periodically renegotiate tunnels, which can interrupt audio/video streams.
• Client-side factors: including an outdated Teams build, stale cache files, or older audio/video drivers.

To narrow things down, here are a few gentle steps you can try right away:

1/ Update the Teams client:

• Keeping Teams fully updated often resolves stability issues. You can follow Microsoft’s official guide here: Update Microsoft Teams.

2/ Join through a different method:

• Try joining the meeting using the web version in Edge or Chrome at https://teams.microsoft.com.
• If the web client stays connected much longer, that usually confirms the desktop app installation needs attention.

3/ Temporarily bypass VPN or proxy:

• If possible, try joining from a network where Teams traffic is not routed through a VPN, authenticated proxy, or SSL inspection.
• Reference: Proxy servers for Teams and Skype for Business Online

4/ Refresh the local Teams state:

• Fully quit Teams, clear the client cache, restart the app, and ensure device audio/video drivers are up to date.

You can follow the detailed instructions here: Clear the Teams client cache

In addition, if you have access to IT support, you may want to ask your company’s IT admin who has admin privileges to review the following:

• CQD & Call Analytics: to check for recurring packet loss, jitter, or VPN/proxy hops during the timeframe of your disconnects. Admin reference: Prepare your organization's network for Microsoft Teams
• Microsoft 365 URLs & IP ranges: to make sure endpoints are fully reachable without filtering or inspection. Admin reference: Microsoft 365 URLs and IP address ranges
• QoS and local network egress: properly configured QoS helps prioritize audio/video traffic and reduce latency. Admin reference: Implement Quality of Service (QoS) in Microsoft Teams

If you’ve tried all of the steps above and the issue still continues, the next best step is for your IT admin to open a support ticket directly with Microsoft so the support team can look deeper into the specific connection logs.

Your IT admin can create a support ticket by sign in to the Microsoft 365 Admin Center following steps from this link: Get support - Microsoft 365 admin | Microsoft Learn to raise a support ticket from admin center or calling the phone support to contact Microsoft Support: Customer service phone numbers - Microsoft Support.

You can look for the way to find your admin through this link: How do I find my Microsoft 365 admin? - Microsoft Support.

Note: We appreciate your understanding regarding the scope of support available through this forum. As moderators, our role is to provide general guidance and assist with common troubleshooting steps. While we do not have access to internal systems or administrative tools required to resolve account-specific or backend-related issues but we’ll continue doing our best to support you within the scope of our responsibilities.  

I hope the information provided proves useful. Please proceed with the outlined steps and let me know whether they resolve the issue. If not, I’ll be glad to continue working with you to find a solution.

Thank you for your patience and understanding throughout this process. Should you have any questions or need further assistance, feel free to reach out at any time.

I look forward to hearing from you.

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