TEAMS Video and Sharing freezing for Hosts when using Mac Book Air's on Mac OS 27.0.1

Question

TEAMS Video and Sharing freezing for Hosts when using Mac Book Air's on Mac OS 27.0.1

CJ DC 0

Since 9/22/2026 60% of the staff all on Mac OS 27.0.1 are seeing TEAMS Video and Sharing freezing for Hosts. Total Staff =57. We are latest TEAMS release 10/1/2026. License is Business P1.

Prior to the Mac OS 27 we were see 3% error rate.

Can you suggest any changes that can be made via TEAMS Admin or Mac OS 27 setting to make this stop?

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3 answers

Your answer

Answer 1

Good day CJ,

I truly appreciate the time and effort you’ve already invested in troubleshooting this issue on your own. Currently, I’ve reviewed the advisories and incidents listed in the Microsoft 365 admin center and didn't find any related notifications.

Since the problem is affecting multiple users in your organization, I recommend opening a support ticket through Microsoft 365 admin center > Support > Help & Support for further investigation.

Turn off the "Support Assistant" feature.

Use the keyword "Support" to quickly bypass automated suggestions > Select Contact Support.

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In the ticket description, please clearly describe the issue, including any error messages and the steps you’ve already tried. You can also attach screenshots or screen recordings.

Additionally, sharing your preferred contact times may help the support team handle the case more efficiently.

A Microsoft technical support engineer can conduct a remote session to review the issue in detail, validate backend configurations and run any required synchronization or diagnostic tools. If necessary, the case can be escalated to a specialized team for more in‑depth analysis and resolution.

As a forum user, I would like to clarify that my role is limited to sharing public documentation, testing observations and general troubleshooting guidance. I don't have access to internal diagnostic tools, engineering backlogs, or build level investigations.

If you have any questions, please don’t hesitate to reach out at any time.

Thank you for your patience and understanding.

If you have any extra questions about this answer, please click "Comment".

CJ DC 0 Reputation points

2026-10-09T13:06:12.06+00:00

Thank you for the Guidance. I have two cases open with MS Support. Both are with the highest failing employees > the 75% of the meeting. They have asked for lots of data, logs, and meeting links. No Answers yet. I will let know if they suggest anything.
Ruby Nguyen 3,045 Reputation points Independent Advisor

2026-10-09T14:02:49.3433333+00:00

Hi CJ,

Thank you for the update.

I'm glad to hear that Microsoft Support is already investigating the issue. Because the problem doesn't occur consistently, they may need logs and meeting data from multiple affected users to better understand the conditions under which it occurs and identify the root cause. Hopefully their investigation will identify the root cause soon.

Please feel free to share any updates they provide, as the findings may also help other users experiencing similar issues. Wishing you the best with the ongoing cases.

Answer 2

CJ DC 0

Part of the AI answer is valid. We are checking on 1 and 4. Rest were tried already.

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Answer 3

The supported changes in the available guidance are on the Mac side, not a Teams admin policy change.

Verify screen recording permission on affected Macs
- In macOS, go to Apple Menu > System Settings > Privacy & Security.
- Open Screen & System Audio Recording.
- Make sure Microsoft Teams is turned on.
- Return to Teams and retry sharing.
- If Teams on the web is used, screen recording permission must also be granted to the browser.
Update macOS on affected devices
- There is documented guidance to update to the latest macOS version and retry screen sharing if sharing issues occur on Mac.
- If devices are managed, have IT push the latest macOS update available for those Macs.
Reduce local resource pressure during meetings
- Close unused applications before meetings and retry screen sharing.
- This is specifically called out for Mac screen-sharing issues.
For video or motion-heavy sharing, use Teams’ high-motion sharing mode
- Start sharing the screen in Teams.
- Press Ctrl+Alt+Shift+T.
- This enables high-motion screen sharing in supported Teams versions.
- Expected behavior: frame rate can improve, but resolution may drop depending on bandwidth and device capability.
- To verify, in the meeting select More > Settings > Call health and check the Screen Sharing section.
- Note: the shortcut is being deprecated in favor of the presenter control toolbar option to optimize for video.
Check for a Mac docking/display issue
- There is a known issue affecting sharing indicators and control panels on macOS 14 and higher when using DisplayLink or other docking stations.
- If affected users commonly use docks, test the same meeting workflow with the dock disconnected.
If the issue is specifically presenter cursor lag during app sharing in VDI, stop and restart sharing
- For Teams VDI on Mac, presenter mouse/cursor lag during app sharing is a known issue.
- Stopping and reinitiating app sharing is the documented workaround.
- This is fixed in Teams 26149.x.x.x or higher for the listed VDI scenarios.
Collect Mac-side Teams VDI logs if this is a VDI deployment
- On Mac endpoints, logs are stored in: ~/Library/Application Support/Microsoft/TeamsVDI
- Use these logs to compare affected and unaffected devices.

What is supported from the available guidance:

No Teams Admin Center setting is documented here to stop this issue.
The documented actions are macOS permissions, macOS updating, reducing local app load, using high-motion sharing for video content, checking dock/DisplayLink involvement, and VDI-specific workarounds if applicable.

References: