参考リンク：https://support.google.com/chrome/answer/2693767?hl=ja

If you are using Windows

Permission for camera and microphone in the browser

１｜Allow camera and microphone

After accessing the room URL, a dialog box similar to the one shown in the figure will appear in your browser. Normally, this is all you need to do to use the camera and microphone.

<aside> 💡 If you want to perform the permission later Click on the key symbol on the left side of the URL bar of your browser. A list of permissions will appear.

</aside>

Check if the browser recognizes the camera and microphone

１｜Check site permissions

Click the key symbol on the left side of the URL bar of the browser, and click "Site Permissions" in the dialog box that appears.

２｜Click "Site Permissions" on the settings screen

When the settings screen appears, click "Site Permissions".

３｜Confirm that the camera or microphone to be used is displayed

The respective settings screen will open. Please confirm that the camera or microphone you wish to use appears in the list.