Microsoft's main Office 365 client apps – Word, Excel, PowerPoint, and Outlook – all include a setting that enables you to enable Intelligent Office Services. What are these, why are they activated? and should you turn it off? Let's find out.
If you have an Office 365 subscription, you will find a section called "Intelligent Services for Office" in Word, Excel, PowerPoint, and Outlook under "File> Options> General" (if you have just purchased Office as On) stand-alone set of apps without O365 subscription will not be available to you.)
The Enable Services check box will turn on or off for all apps for all apps; There is no individual choice. If you activate the app in every app, it will be activated in every app. If you disable them in every app, they will be disabled in every app.
What are Office Intelligent Services?
Simply put, Office Intelligent Services (OIS) are dynamic, cloud-based services that provide useful additional features to improve your work. For example, Microsoft provides a translation feature that translates a section of text or an entire document. This is an OIS feature available only to O365 users with the Enable Services check box selected.
Other OIS features include a data visualization tool for Excel, a PowerPoint design guide, and a "smart lookup" tool. You can find information about a topic and the ability to dictate text instead of typing it. There are also some other services, and Microsoft adds more regularly.
Note: To use some of the other services, you must also leave a different default value enabled. In Word, Excel, PowerPoint, or Outlook, open File> Options> Trust Center, and then click Trust Center Settings.
 Select "Privacy Options" on the left and then on the right, and make sure both "privacy options" are enabled.
Why are Office Intelligent Services enabled and should you disable the service? Them off?
When you first open a client application that uses OIS, you are asked if you want to enable it. If the "Enable Services" check box is selected, you have agreed. But do not worry! You now know how to turn it off again.