How to fix Cannot Play MP4 Videos Microsoft Teams issue Windows 10/11?

Several users have reported about “Cannot Play MP4 Videos Microsoft Teams” during meetings or chats. If you are dealing with the same issue, don’t worry and just go with the article and follow the recommended fixes that would surely help you in resolving the problem.

 You all know the demand of the virtual meeting platforms have been high since pandemic COVID-19.  This marked a spurt in the users’ base of Microsoft Teams globally, especially among teachers, students and professionals.

As per the reports, this popular communication platform reached over 270 million of users in 2022. However, recently, there is a constant hitches reported by users on MP4 video file sharing, uploading or in playback in Terms.

I cannot play MP4 videos in Microsoft Teams meeting.’

‘Microsoft Teams not playing MP4 video on laptop or phone.’

‘PowerPoint videos are not playing in Teams.’

‘MP4 videos don’t play audio in Teams.’

‘I cannot play MP4 in Teams chat.’

The problem looks quite frustrating as the ability to share videos is one of the key selling points of the applications like Microsoft Teams.  Let’s look the possible reasons for MS Teams not playing the video files:

  • Slow Internet Connection,
  • Accumulation of Microsoft Teams Cache files,
  • Corrupted cache data of the Teams,
  • File size is large – 4k, 5k or more,
  • Video file is corrupt.

Now, after knowing the nature of the issue and possible reasons behind it, we are in the position to discuss its possible fixes. Here, we have provided you different troubleshooting solutions that should work for you:

Possible fixes for Cannot Play MP4 Videos Microsoft Teams

Fix 1: Check your Internet Connection

Any Live Streaming Video requires a good internet connection with decent bandwidth. Use a free Internet Speed tester to check your bandwidth. If the internet connection is slow, you should restart your router and if this does not work, contact your Internet Service Provider.

Fix 2: Upload the file in Stream

Teams will show some type of error if you upload a file more than 250 GB of size. You should share the video to stream and use it open the video in Teams:

  • Click on the three vertical dots associated with the video, click on Share option and then copy the URL,
  • Now, open Teams and go to the group where you want to upload the video,
  • Click on the + icon, and then click on the Stream icon and paste the URL,
  • Finally, click on the Save button and now open the file on Stream.

Fix 3: Clear Microsoft Cache

Corrupted Teams cache could be another reason why you face various errors including this one. So, if the previous method did not work for you, should clear the cache of the Microsoft Teams to resolve the issue:

  • Firstly, log-out of MS Teams,
  • Then, Open Powershell in elevated command and execute the below command:

Get-ChildItem “C:\Users\*\AppData\Roaming\Microsoft\Teams\*” -directory | Where name -in (‘application cache’,’blob storage’,’databases’,’GPUcache’,’IndexedDB’,’Local Storage’,’tmp’) | ForEach{Remove-Item $_.FullName -Recurse -Force -WhatIf}

  • Log-in to Teams and check if MP4 videos are now playing.

Alternatively, you can delete Microsoft Teams’ cache using the below steps:

  • Press Win+ R, type in %appdata%\Microsoft\Teams and hit Enter,
  • Clear all the content in the directory,
  • Finally, close the File Explorer.

Fix 4: use VLC Media Player

If you still Cannot Play MP4 Videos Microsoft Teams, then download and use a third-party video player and see this does the trick. This is obviously not a permanent solution but you will be able to play the video. Follow the give steps:

  • Play the video in VLC,
  • From the Call, click on Share icon,
  • Turn the toggle Include computer sound ON,
  • Go to the Windows and select VLC tab.

Fix 5: Download Codec

Codes will reduce the sizes of the video file and so help you in downloading the file faster. Lack of a Codec might result in stopping you from sharing the video file on online meeting platforms. So, you should download a Media Player codec pack, k-Lite and etc on your computer from their official websites and see if this helps.

Fix 6: Try Microsoft Teams Website

There could be a case there is a problem specific to the Microsoft Teams client app and so you should try using the web version. Go to teams.live.com, sign-in with your account details and play the video file. Hopefully, this will do the job for you.

Conclusion

That’s all! We are now rounding off our discussion on how to fix Cannot Play MP4 Videos Microsoft Teams issue. If the problem continues, we recommend you use PC Repair Tool – an automatic tool to check for possible Windows related issues to get rid of them automatically.