This is the forum for the free Adobe Acrobat Reader which doesn't have this feature. What exactly do you have (or, should you have)?
Sorry for the delay in response.
As per the issue description mentioned above, you are facing issue when trying to convert word to pdf, is that correct?
Please try following troubleshooting steps:
1- Set Acrobat to run as an administrator and try converting files again- Run an Adobe program as administrator | Windows 7, Vista
2- If that doesn't work, try repairing Acrobat using "Repair installation" option under Help menu, reboot the machine after repair and check.
You may also refer to the following forum threads discussing the similar issue:
Also, let us know dot version of Acrobat and the operating system installed on the machine? You may refer to the steps given in this link on how to check the version in Acrobat: Identify the product and its version for Acrobat and Reader DC
Let us know if you need any help.