Accessing Microsoft Teams using organizational or personal credentials
Found this off a reddit post, worked for me,
1, close all Office software, in the "Start Menu" in the search "Command Prompt" (or "cmd"), and the right mouse button click and select "Run as administrator";
2, in the command prompt enter the following code:
cd %programfiles% \Common Files\microsoft shared\ClickToRun
Enter;
3, and then enter
Officec2rclient.exe /update user updatetoversion=16.0.17531.20120