Microsoft Teams Issue Blocks Users After Edge Update

Microsoft is investigating a known issue preventing some users from joining Microsoft Teams meetings on Windows devices. This problem emerged following a recent update to the Microsoft Edge browser.

The disruption is affecting organizations, including those using NHSmail infrastructure, with reports indicating that scheduled meetings and link-based meeting joins are the primary points of failure.

The issue stems from a regression introduced in a recent Microsoft Edge release, which has caused failures for a subset of users attempting to join Teams meetings.

The problem appears to be exclusive to Windows environments and is specifically triggered when users try to access scheduled meetings or join via shared meeting links, two of the most common entry points in enterprise collaboration workflows.

Microsoft confirmed the root cause in its latest advisory: “A recent Edge release introduced a regression that’s resulting in failures for some users when attempting to join meetings in Microsoft Teams.”

The incident, tracked under Microsoft reference TM1288497, has been confirmed to affect organizations at scale. Users encountering the issue may find themselves unable to connect to meetings entirely, disrupting day-to-day operations that rely heavily on Teams-based communication.

NHS organizations referencing this under INC46806917 are among those impacted. Microsoft notes the scope of impact may be updated as the investigation continues.

While Microsoft works toward a permanent fix, a simple workaround has been identified: restarting the Microsoft Teams client can restore the ability to join meetings in most affected cases. IT administrators and end users are encouraged to apply this step as an immediate mitigation while awaiting the full resolution.

As of March 23, 2026, at 08:05 AM, Microsoft’s engineering team reported they are analyzing diagnostic data and reviewing recent service changes that may be contributing to the problem. The team has committed to providing a timeline for next steps once one becomes available.

The next scheduled update is expected on Thursday, April 23, 2026, at 6:00 PM UTC, at which point Microsoft is expected to share further findings or a remediation plan.

Recommended Actions

• Restart the Microsoft Teams desktop client if meeting join failures occur
• Avoid relying solely on Edge when joining meetings until the issue is resolved
• IT teams should monitor the Microsoft 365 admin center and NHSmail service alerts for updates

Organizations dependent on Teams for critical operations should ensure staff are aware of the workaround to minimize disruption during the ongoing investigation.

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