To download Microsoft Teams from portal.office.com, start by signing in with your Microsoft 365 account. Once logged in, click on the App Launcher (the grid icon) in the top-left corner. From there, select Teams. If its not listed, click All apps to find it. On the Teams page, look for the download link, typically at the bottom left. Click Download desktop app and follow the instructions to install Teams on your device. Once installed, launch the app and sign in with your credentials to access your Teams workspace. Enjoy seamless collaboration with your team!