Posted inMicrosoft Teams

MC1427962: Teams Shares Network Configuration Guidance to Prevent Streaming Issues in Town Halls and Live Events

4 minutesPosted inMicrosoft Teams
MWPRO IMPACT SCORE
OPERATIONAL IMPACT
59
0 25 50 75 100
HIGH IMPACT • REVIEW RECOMMENDED
Recommended Action:
Review the update and plan any required actions before rollout.
▶ What is MWPro Impact Score? Watch our 60‑second explainer

Primary Audience

Microsoft 365 AdminsTeams AdminsIT ManagersNetwork TeamsService Owners
Why this score?
AI Confidence
HIGH
Enough detail is available to trust this assessment.
Assessment Reasoning
Microsoft is advising admins to review and possibly update network configurations for Teams town halls and live events, particularly where third-party SWG, proxy, or inspection is involved. Admin actions include validating routing, applying split-tunnel policies, reviewing proxy settings, and performing event tests. The user impact is moderate because attendees may experience reduced stream quality or latency if configurations are not optimised. Urgency is moderate-high as this relates to current risk for live events, requiring proactive planning and testing.
65
🛡️ Admin Impact
HIGH
45
👥 User Impact
MEDIUM
60
⚡ Urgency
HIGH
55
🔧 Effort
HIGH
ℹ️ WHAT YOU NEED TO KNOW
📌

AT A GLANCE

Microsoft is highlighting ongoing risk of streaming issues in Teams town halls and live events when using SWGs, proxies or traffic inspection. They advise reviewing network settings to minimise quality problems.
👥

END USERS

Users may see join issues, buffering, or video quality problems during events if network paths are not optimised.
🛡️

IT ADMINS

Review network allowlists, SWG and proxy settings, VPN split-tunnelling, and run a test event. Prepare helpdesk and organisers.
📅

ROLLOUT TIMELINE

Timing:
Not specified

📢 Official Microsoft Message Center Announcement

Network best practices for Teams town halls and live events with third‑party providers
Message ID: MC1427962

[What and Why:]

To help prevent streaming quality issues in Teams town halls and Teams live events, we recommend that you review your network configuration—especially if users connect through a secure web gateway (SWG), proxy, or traffic inspection solution (for example, Netskope, Zscaler, or Symantec).

[Rollout Schedule:]

This is an active issue. We are continuing to investigate and provide guidance to help reduce the risk of streaming quality issues. Updates will be shared as they become available.

[Impact on Your Organization:]

Who is affected:

  • Microsoft 365 tenants that run Teams town halls and/or Teams live events, especially where users connect through a third-party SWG, proxy, or traffic inspection provider.

Platforms/Services:

  • Microsoft Teams (town hall and Teams live events) across desktop, web, and mobile, depending on how attendees join and how your network routes traffic.

What will happen:

  • If your SWG, proxy, or traffic inspection policies aren’t optimized for real-time media, town halls and live events may experience:
    • Intermittent join or playback issues
    • Lower video quality or buffering
    • Increased latency or broadcast delay
  • If your network is already configured to allow Teams real-time media traffic as recommended, no change is expected.

[Action Required/Recommendations:]

To help reduce the risk of streaming quality issues, review the following recommendations:

[Compliance considerations:]

No compliance considerations identified, review as appropriate for your organization.

Source: Microsoft Message Center • Analysed by MWPro

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