Hi nirpor, my name is John D. an independent advisor happy to help you with this.
Based on the error message you provided, it appears that the Updater.exe program is unable to find the ffmpeg.dll library. This library is shared by several programs, and it is possible that it was accidentally deleted or moved.
One solution that has worked for some users with a similar issue is to clear the cache of Microsoft Teams. This involves closing all Teams processes via Task Manager, opening the Run Command (Windows Key + R), and typing %appdata%, then following the path Microsoft\Teams\ and deleting all the files in there other than the meeting add-in. This may help to resolve the issue.
Reference: https://answers.microsoft.com/en-us/windows/for...
I hope this information is helpful to you.
Best regards,
John D.
Independent Advisor