If you are receiving a "Mic is blocked by System Settings" Error on Google Meets, follow these steps to fix the issue.
1. First you will click the start button on the bottom left of the screen, and type in Control Panel. Press Enter.
2. You will then Click Hardware and Sound.
3. Then Click Sound, on the pop-up window select the Recording tab. Here You will see your sound devices, if any are disabled, Right-click the device and select Enable to make it available for use.
4. Next You will go back to your Google Meet, Click the 3 dots on the bottom right, select Settings, and verify the correct device is selected for the Microphone.
5. You should now be able to un-mute and use your Mic.