EndNote in Word can occasionally display unformatted references that will look like this:

In certain circumstances, this option can be useful.

• When writing a long document (such as a thesis). This will allow Word to work faster on your computer.
• When combining chapters into a master document. In this situation, you need to have unformatted references in both the chapter and master documents.

To turn instant formatting on or off, click on Instant Formatting is... 

Note: If you are a Mac user with unformatted references that produce an error code when formatting is turned on, please contact Clarivate directly to troubleshoot.