If Microsoft Teams keeps freezing, start by matching the pattern: meeting-only freezes usually point to camera, audio, rendering, or embedded-content issues; freezes right after launch often point to cache, updates, or installation problems. Clear the Teams cache first, then restart the app.
What a Teams freeze usually means
A freeze means Teams stops responding or stops updating the screen while the app window may still be open. That is different from a crash, where the app closes by itself. A freeze can stay inside a meeting, happen at startup, or appear only when you open embedded Power BI, Power Apps, or Excel content.
That difference matters. A crash often sends you straight to repair or reinstall steps. A freeze often points first to local cache, rendering, or content-loading trouble.
Freeze vs crash: how to tell the difference
If the window stays open but buttons stop working, that is a freeze. If Teams disappears or closes by itself, treat it as a crash. Some crash reports do not include an error message, and the symptom may appear inconsistently across users.
When a freeze is likely meeting-related
Meeting-only freezes are often reported when video starts, screen sharing begins, or a background effect loads. That pattern points first to graphics rendering or local resource pressure, not to a broken sign-in. If the app works outside meetings, check camera use, screen sharing, and heavy video use before you reinstall anything.
Teams freeze triage table
| Symptom pattern | Likely cause | First fix | Second fix | When to escalate |
|---|---|---|---|---|
| Freezes only in meetings, especially on join or video start | GPU/video rendering or camera load | Disable GPU hardware acceleration in Teams | Update Teams and Microsoft 365 | If every meeting still locks up after settings changes |
| Freezes after launch or while signing in | Cache or corrupt local app data | Clear the Teams cache | Repair or reinstall Teams | If Teams still hangs before the home screen |
| Freezes only while viewing Power BI, Power Apps, or Excel embeds | Embedded content or browser component conflict | Open the same file or app outside Teams | Update Teams and the source app | If one embed type always locks up |
| App-wide freezes with no obvious trigger | Update conflict, cache, or installation corruption | Check updates | Reinstall Teams or repair Microsoft 365 | If the app still freezes after a fresh install |
Why does Microsoft Teams keep freezing?
Teams most often freezes because local app data is out of sync, an update introduced a bug, or the installation has become corrupt. Less commonly, the trigger is graphics rendering, network latency, or a specific account or profile problem. The right fix depends on whether the freeze happens in meetings, at startup, or only inside embedded content.
Most common cause: cache or local app data
Microsoft Teams cache is made of auto-generated local files stored in multiple folders. That is why cache cleanup is the first step for many freeze patterns.
Graphics and video rendering problems
When freezes start as soon as video turns on, camera frames load, or screen sharing begins, rendering is a likely suspect. The app may still be running, but the rendering path stalls. That is why meeting-only freezes need a graphics-related check before a full reinstall.
Corrupt installation or update conflict
If Teams freezes on launch, after sign-in, or immediately after an update, the installation itself may be damaged. Teams updates and Microsoft 365 updates can sometimes fix known bugs, and a reinstall can replace broken app files when cache cleanup does not help. If the install keeps failing, stop repeating the same cache step.
Say your laptop joins a meeting, the video tiles appear, and then the window stops responding while audio keeps going. That pattern points more strongly to rendering than to sign-in. Suppose the same laptop freezes only after opening a Power BI tab inside Teams; that points toward embedded content rather than the meeting itself.
Clear the Teams cache first
This is the best first fix for many freeze patterns because the cache is made of temporary files that Teams can recreate. Use the Windows Run dialog to reach the Teams folders, delete the cache folders for Teams, and then restart the app. If you prefer automation, a PowerShell script can do the same job.
- Quit Teams completely. Check the system tray and exit the app if it is still running.
- Press Windows key + R to open the Windows Run dialog.
- Type %AppData%\Microsoft and press Enter.
- Open the Teams folder inside Microsoft, then remove the cache folders inside it. If you use the new Teams app, also check %LocalAppData%\Microsoft\Teams.
- Restart Teams and test the same action that froze before.
If manual cleanup is awkward, a PowerShell script can delete Teams cache automatically. Run PowerShell as administrator, then use a trusted cleanup script from your IT team or support documentation. For example: Get-ChildItem "$env:AppData\Microsoft\Teams","$env:LocalAppData\Microsoft\Teams" -Recurse | Remove-Item -Force -Recurse Administrator rights matter because the script may need permission to remove files in protected locations.
How do I stop Microsoft Teams from freezing during meetings?
For meeting-only freezes, check camera use, screen sharing, and any background effects that increase graphics load. That matters more than cache in this symptom pattern.
- Open Teams and go to Settings.
- Open General or the nearest app settings page where video and graphics options appear.
- Check video, screen share, and background effect settings if they are available.
- Close Teams completely and reopen it.
- Join the same meeting again, then test video, screen share, and chat one at a time.
Update both Teams and Microsoft 365 after that. Microsoft Teams app updates are available from the in-app desktop menu, and mobile updates come through the Google Play Store or App Store. Microsoft 365 updates can also address known bugs through an Office app.
Why does Teams keep freezing on startup?
Startup freezes usually point to a corrupt installation, bad local data, or an update conflict. If Teams will not get past the splash screen or login screen, cache cleanup may help, but repair or reinstall becomes more likely than a meeting-only fix. Check updates first, then move to the installation itself.
- Open Teams and look for an update option in the desktop app menu.
- Check Microsoft 365 updates in an Office app if Teams is installed through that subscription.
- If the freeze continues, repair the app through Windows Settings > Apps > Installed apps, then choose Modify or the available repair option. (Microsoft Support)
- Sign out of Teams and sign back in after the repair.
- If startup freezing remains, uninstall Teams and install a fresh copy.
If Teams freezes before the interface loads at all, keep moving down the ladder instead of repeating the same step.
Freezes only in embedded content?
If Teams freezes only when you open Power BI, Power Apps, or Excel embeds, the problem may be in the embedded app, its sign-in token, or the way Teams loads that content. Try the same file or app outside Teams first. If it behaves normally there, the problem is likely in the Teams container or its browser components.
- Open the same report, app, or workbook directly in its own app or browser tab.
- Update Teams through the desktop menu if you are on Windows or macOS.
- Update the source app as well, including the browser or Microsoft 365 component that opens the file.
- Sign out of Teams, sign back in, and retry the embedded tab.
- If one embed type always locks up, escalate to your IT team or the app owner.
Should I update or reinstall Teams if it keeps freezing?
Update first if the freeze is new, started after a recent change, or affects only one device. Reinstall if cache cleanup and updates do not help, or if Teams freezes on startup and repair fails. A fresh installation is more useful when the app itself is corrupt than when the problem is caused by cache or graphics settings.
If that did not work, try this next
If cache cleanup, updates, and reinstalling do not stop the freezing, repair Microsoft 365 or reinstall Teams again from a clean state. If the problem appears on multiple users or devices, that points away from a single local profile and toward a tenant, policy, or service issue. At that point, contact IT support or Microsoft support with the exact freeze pattern, the screen where it happens, and whether it affects meetings, startup, or embedded content.
Microsoft 365 updates can sometimes fix known bugs, but a repair is more appropriate when the installation itself is damaged. If a fresh install still freezes, stop cycling through the same local fixes and ask support to check account, policy, or service-side causes.
Frequently asked questions
Why does microsoft teams keep freezing: most often, Teams keeps freezing?
Most often, Teams keeps freezing because of cache problems, update conflicts, rendering issues, or a corrupt installation. Start with cache cleanup, then check for Teams updates in the app menu. If the freeze happens only in meetings, check video and screen share settings before you reinstall anything.
What causes microsoft teams to freeze
The usual causes are local cache files, graphics rendering problems, and app updates that do not fit the current install. Less commonly, embedded content or a broken Microsoft 365 component causes the stall. Match the symptom pattern first, because that tells you whether to clear cache, check video settings, or repair the app.
How do I stop microsoft teams from freezing during meetings: check video, screen sharing?
Check video, screen sharing, and background effect settings in Teams, then restart the app and rejoin the meeting. If that does not help, update Teams from the desktop menu and update Microsoft 365 through an Office app. Meeting-only freezes usually need rendering checks before cache cleanup becomes useful.
Is microsoft teams cache causing freezing?
It often can. Teams cache is made of auto-generated local files stored in multiple folders, and those files can be safely deleted. If Teams freezes after startup or after joining meetings, clear the cache from %AppData%\Microsoft and, for the new Teams app, %LocalAppData%\Microsoft\Teams, then reopen Teams to test again.
Should I update or reinstall teams if it keeps freezing: update first?
Update first if the problem started recently or affects only one device. Reinstall if Teams still freezes after cache cleanup and updates, or if it locks up on startup. Use the in-app desktop update menu on computer, and use the App Store or Google Play on mobile.
Why does my teams keep freezing?
It usually means the app is hitting a local problem rather than a full service outage. The most useful clues are where the freeze happens: on launch, during meetings, or inside embedded files. Those patterns decide whether you clear cache, check video settings, or reinstall the app.