Teams Files

You try to attach a file to a message in a Teams shared channel, but the upload fails or the attach button is grayed out. This problem usually comes from the channel type, a policy setting, or a missing SharePoint site. In this article, you will learn the exact reasons for the failure and the … Read more

You try to attach a file in a Teams chat and nothing happens. The file picker opens but the upload fails or the file never appears. This often starts right after someone renames a SharePoint site that hosts the team’s files. The root cause is that Teams still caches the old site URL and tries … Read more