Can't Join Teams Meetings on Commercial OR GCC High + Teams Meeting Pane Fails to Update

Karissa C 5 Reputation points
2026-09-29T13:30:05.8933333+00:00

Issue:

Our domain users have been unable to join Teams meetings after an update put them on v26246.1604.5133.838. When you click "Join Meeting" the menu will stay on "Connecting.." indefinitely and never actually connect the call. For GCCHigh accounts, they receiving an error stating they are not connected to the network, even though they are.

Clearing the Teams cache by hitting "Reset" or "Repair" in the Windows settings does not resolve the issue, nor does logging out and back in. Web version is still functional for all. Machine affects both Windows 10 and 11 users.

Current fix:

So far, the commonly found resolution for all has been rolling back to v26225.1806.5074.1452 from an older MSI, though it is no longer working as of today and putting everyone on the current version.

Latest Teams Update

Windows (Sep 24, 2026) – Build 26246.1604.5133.838

Currently Working Teams Update

Windows (Sep 8, 2026) – Build 26225.1806.5074.1452

Looks like some other visual glitches have been noted with Teams meetings on the latest version. Such as the meeting pane not updating when people unmute microphones, share their screen, new users join the call, etc.

Microsoft Teams | Microsoft Teams for business | Meetings and calls | Audio and video
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  1. Demi Nguyen 2,415 Reputation points Independent Advisor
    2026-09-29T14:00:34.5366667+00:00

    Hello Karissa C,

    Thank you for your patience while working through this issue.

    At this stage, I recommend asking your Microsoft 365 administrator to report the problem through Microsoft 365 admin center > Health > Service health > Report an issue. This allows Microsoft to review reports from your organization together with related reports from other tenants, identify how widespread the behavior is, and provide updates through the Service health dashboard if it is confirmed as a service issue.

    User's image

    I also recommend opening a support ticket through Help & support in the Microsoft 365 admin center. A support engineer can then work directly with your administrator, collect the relevant diagnostic information and logs, review the affected environment, and investigate the issue further.

    When opening a support ticket, please make sure the Support Assistant (AI) in the Help panel is turned Off. Several customers have reported that the Contact Support option may not appear while the Support Assistant is enabled. Once the AI assistant is turned off, you should be able to enter a description of the issue and the Contact Support option will appear, allowing you to submit a ticket directly to Microsoft Support. 

    Microsoft 365 admin center 0 Search Contoso D 8. Add a user A Multi-factor authentication Refresh Delete user € X Self Help Contact Support Support History Marketplace Display name ™ Username 2 Support Assistant Off Billing Support How can we help? turn of Sp Assistance < Help & support 1 View service requests Tell us your problem so we can get you the right help and support. Customer Lockbox Requests Microsoft Surface support get help Settings 1 8/140 3 X Get Help Domains Search & intelligence Org settings Al-generated content ® Microsoft 365 Backup To get help for your Microsoft 365 for business subscription Integrated apps as an admin, you can use online or phone support options Viva available in the Microsoft 365 admin center. Here is a high- level overview and step-by-step instructions: Partner relationships 1. Access the Microsoft 365 admin center at Microsoft Edge https://admin.cloud.microsoft. You must be an admin Setup to access support features. [1] 2. On the bottom right side of the page, select Help & Reports > Contact support 4 Legal | Privacy

    When submitting the report and support request, please include the affected users, the exact time the issue occurred, the application and operating system versions, screenshots of any errors, the troubleshooting already completed, and clear steps to reproduce the problem. This information will help the support team investigate more efficiently.

    I hope the Microsoft support team can provide further clarification after reviewing the diagnostic data from your environment.

    Kind regards,

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