There are multiple reasons for this issue, but the most likely is your security permissions.
Why is Microsoft Teams screen sharing not working on Mac Big Sur? They might take some time, but you should be in the clear afterward.
Instead of waiting for things to solve themselves, start applying the below solutions one by one. The idea that an update broke screen sharing on Microsoft Teams for Mac users is far from pleasant, but we cannot rule it out. After all, several other apps are behaving weirdly on Apple’s macOS Catalina. In some cases, Microsoft’s latest updates can cause this. Other users only get a pop-up and discover that the share screen is not working on Mac. That’s how it should usually work, yet Microsoft Teams gets its fair share of issues these days. Afterward, they select the Share screen button and choose to present their entire desktop, a PowerPoint file, a window, or a whiteboard. When talking about Teams, most users try to do their daily routine by simply opening it and joining a meeting. Worried that Microsoft Teams share screen is not working on Mac? Don’t be, you’re not the only one facing this issue.
