We’ve just received the following information from Microsoft on the change to editing documents within Microsoft Teams. Please note they are not saying at this time how long this change will be in place.

To best support our Microsoft 365 Education customers worldwide and accommodate new growth and demand during these unprecedented times, we are making a temporary adjustment to Office document behavior within Microsoft Teams.

We are beginning to roll out a temporary change where there will be an additional step in order to edit a document. This is a change from current behavior that allows users to go straight to edit mode when clicking on a document in the “Files” tab of a channel or a conversation.

In all cases, upon clicking on the document, users will first see the document in view mode – they will be able to see the document content, but not make changes.

In order to edit the document, users need to click on the three dots to open more options in the top right and select “Open in Browser”. This will open the document in Office in a separate window from Teams and allow the user to make changes.