Drag and drop - Using your mouse, drag the file from where it's currently located and drop it on the … Click the Upload from my computer option. Click the Attach button from the message section. Microsoft Teams Quick Start Want more? You can also upload a file by going to the Files tab of a chat and select Share. Click on Teams. Click on the paperclip icon below the chat bar. To upload files to Teams, use these steps: Open Microsoft Teams. Source: Windows Central Select the file. Select Upload. Select Choose file beneath the box where you type a message. You'll have access to files from your computer, OneDrive for Business account, and any third-party cloud storage you or your admin have added to Teams. Alternately: Go to the Files tab. Here you can upload files from a variety of locations. Select Open. Select single or multiple files from device computer or OneDrive for Business account. Click the Send button. Microsoft Teams - Uploading, Editing, and Deleting Files Navigate to the chat or team channel that you want to upload the file to. Click the Open button. This will upload a copy of your original file. Select the team (channel). Anywhere in Teams, look for the paperclip icon to Attach a file. Share a file in Teams.