In November 2016, Microsoft added a new tool to its already robust Office 365 suite of services – Microsoft Teams. Teams is a chat-based collaboration tool that provides global, remote, and dispersed teams with the ability to work together and share information via a common space. You can utilize cool features like document collaboration, one-on-one chat, team chat, and more. Microsoft Teams is also fully integrated with many other Office 365 services, such as Skype, SharePoint, Exchange, and Yammer.
You can follow the below step to change background setting in Microsoft Team
Step 1: Navigate to the Uploads directory of Microsoft Teams on your PC:
macOS: Go to Users > (username) > Library > Application > Support > Microsoft > Teams > Backgrounds> Uploads
(Shortcut: copy this text to the address and hit the enter key: ~/Library/Application Support/Microsoft/Teams/Backgrounds/Uploads)
Windows: Go to C Drive (or where Windows is installed), then go to Users > (username) > AppData > Roaming > Microsoft > Teams > Backgrounds > Uploads
(Shortcut: copy this text to the address and hit the enter key: %appdata%\Microsoft\Teams\Backgrounds\Uploads)
Step 2: Copy your favorite images that you wish to use as background in your Microsoft Teams meetings to the ‘Uploads’ folder and close the File Explorer.
Step 3: Open the Microsoft Teams app on your PC. Initiate a video call or meeting. Click on the ‘3-dot’ menu button in the calling bar at the bottom and then click on ‘Show background effects’.
Step 4: You will get the ‘Background settings’ menu in the right pane. It has a list of custom backgrounds as well as the Blur option. Click on the background to select it, and then click on the Preview button at the bottom of the right pane to get a preview of that background. You can try different backgrounds.
Step 5: To apply the background, make sure you have selected it, and then click on the Apply button.