Microsoft will often ask for client log files to help them diagnose bugs with Teams. Here's how to collect your Teams client log files.
Open Microsoft Teams Application Client.
Generate a log file using the shortcut for your OS (see below).
Windows 10: Ctrl + Alt + Shift + 1
macOS: Option + Command + Shift+1
The file will be saved to the Downloads folder and you will see a desktop notification for it.
Your log files contain diagnostic data and no messaging or sensitive information.