This normally isn’t something you should worry about–Office does the right thing to ensure old documents work properly and you can continue to collaborate with people using older versions of Office. But you can leave Compatibility Mode, if you like.
What Is Compatibility Mode?
Modern versions of Microsoft Office have introduced new features that aren’t compatible with older versions of Microsoft Office. Modern versions of Word, Excel, and PowerPoint also handle document formatting a bit differently from older versions.
When you create a new document in Office 2013 or 2016, it’s created as a modern document with access to all these new features and the latest formatting styles. However, when you open a document created with Office 2010 or an older version of Office, it’s opened in Compatibility Mode to ensure it looks the same in those old versions as it does in the 2013 or 2016.
Compatibility Mode also disables access to new features. For example, if someone creates a document in Word 2007 and you open it in Word 2016, Word 2016 will prevent you from using features that Word 2007 wouldn’t understand. You can then save the document and send it back to the person who sent it to you without running into problems. If Word 2016 let you use modern features, the other person may not be able to view the entire document.
This mode is intended to ensure users of different versions of Microsoft Office can continue working together and documents created with older versions of Office won’t look any different when they’re opened in future versions of Office.
The exact features that are disabled in Compatibility Mode depend on which Office application you’re using and which type of Compatability Mode a document is using. For example, if you’re using Word 2016 and you open a document that’s in Word 2010 Compatibility Mode, you won’t be able to use Apps for Office or embed online videos. These features require Word 2013 or newer. Microsoft offers a complete list of Word features unavailable in Compatability Mode.
How to Find Out Which Compatibility Mode a Document Is Using
You can find out which Compatibility Mode a document is in. To do so, open a document that’s in Compatibility Mode and click File > Info > Check for Issues > Check Compatibility.
How to Update a Document and Leave Compatibility Mode
To get a document out of Compatibility Mode, open it in the appropriate Office application and click File > Info > Convert. This will convert the older document to a modern type of Office document.
Don’t do this if you (or someone else) needs to work with the document using an older version of Office, like Office 2010 or an older version. If someone sent you a document in Compatibility Mode, you shouldn’t update it before sending it back to them. They may need it in the older format.
After you agree, “Compatibility Mode” will vanish from the title bar. You may want to quickly look through the document to confirm that there are no layout changes you need to fix. You can now save the document, and it’ll be saved as a modern Office document. It will no longer open in Compatibility Mode.
If every document you create is in Compatibility Mode, your Office application is likely set to create documents in an older file format.
To check this, head to File > Options > Save. Click the “Save files in this format” box and ensure it’s set to the modern type of document. For example, select “Word Document (.docx)” for Word. If you select “Word 97-2003 Document (.doc)” here instead, Office will always save files to the older file format, which means they’ll always be in Compatibility Mode by default.
If you create documents from one or more templates, it’s also possible that the original template documents are in Compatibility Mode. Open them and convert them like you would another document.
You don’t need to go through your documents one by one updating them. They’ll just work fine, and you won’t even notice a difference unless you try to use a feature that doesn’t work in Compatability Mode. If you try to use a feature and aren’t allowed to do so, you’ll be told you need to convert the document to access that feature, and you can do so then.