1. In Word for the web, click Open in Word (requires Word 2003, or later, or Word for Mac 2008 12.2.9 or later).
  2. In the Word desktop application, remove the unsupported features. For details about what’s supported, see Differences between using a document in the browser and in Word.
  3. Save the document (press Ctrl+S in Windows, or ⌘+S on the Mac).
  4. If you used Word 2003, Word 2007, or Word for Mac 2008 12.2.9, close Word so that others can continue co-authoring the document in Word for the web.
    For the most part however, you can protect just about anything. Unlike DropBox, you can’t backup every possible file type either.For example, OneNote or Outlook PSTs are a no-no.
    Microsoft
    Microsoft is working on a big redesign for its Outlook for Mac and Windows apps. The software giant revealed teasers for the new design during an Ignite conference session last month, and the goal. Microsoft is redesigning outlook for mac and windows. Microsoft is working on a big redesign for its Outlook for Mac and Windows apps. The software giant revealed teasers for the new design during an Ignite conference session last month, and the goal is to simplify the user interface on both Mac and Windows versions.
    If another author saves the document with unsupported features before you have saved the document in Word for the web, you might not be able to save your work in Word for the web. If you have Word 2010, Word 2013, or Word for Mac 2011 you can prevent losing your changes by opening the document in the Word desktop application. Click Open in Word, copy your changes from Word for the web, and then paste them in the document in Word. When you save the document in Word, your changes are saved on the server.

If co-authoring in Word for the web isn’t working

Microsoft Word Free Download

If co-authoring isn’t working in Word for the web, it might be because someone has the document open in a version of Word that doesn’t support co-authoring. The document might contain features that are not supported for editing in Word for the web, or some other problem. For help, see Troubleshoot co-authoring Word documents.

Microsoft Word 2010 For Mac

Note: In SharePoint 2010, Word for the web does not support co-authoring, but you can work together in Word 2010, Word 2013, and Microsoft Word for Mac 2011.