If you want to see this behavior fixed please vote for the UserVoice item below.

I think this is a bug, but it may be an intentional feature. With Microsoft Word open, click on the 'File' tab. This has led to quite a few scenarios where users thought they were covered by AutoSave since they were working in SPO and they weren't. For future reference, make sure you turn on Microsoft Words AutoSave function to avoid losing your work. Looking on hte net there are different opinions. When I select a word document to be opened with word app, on the top left, the auto-save toggle is missing. I have moved to a different machine with windows 10 and I have installed onedrive. As this document mentions, AutoSave in the desktop/mobile apps is currently being worked on, and the web apps should support it if you have the SPO. since I have started to work with online documents, I have found very convenient the auto-save button. There are other ways to help protect the file from being edited. To turn it off again later, just repeat that process. However, I tried on both Word and Excel applications, the AutoSave was not available to work. I tried to turn on the AutoSave feature in the Excel and the Word so that I can automatically save important files while editing them. To turn this setting on for a file, go to File > Info > Protect Document> Always Open Read-Only. The Office AutoSave feature seems greyed out and is not available to work in my Office 2016 applications. Because SharePoint and AIP didnt quite work together, until recently, and theres still work being done to make sure that all features work as expected. When people open a file with this setting, they wont be able to save edits to the file, unless they specifically enable editing. It recognizes that you CAN turn autosave on, but it doesn't automatically turn it on for you. You can *manually* enable it however it doesn't automatically turn itself on. Re: AutoSave is disabled on protected file. Here's why: AutoSave will always tell you why it's turned off, all you need to do is hover your cursor over the AutoSave icon. This week we found an exception: AutoSave will not automatically turn on after a document is checked out from a SharePoint Library. My users have loved it since it launched in July, and they all know that if they save to SharePoint Online that this feature just works.

Cant turn on autosave in word