Acrobat Create PDF extension is used to convert web pages to pdf. Enabling this extension adds the Acrobat PDF Creation toolbar and the right-click context menu options to convert webpages or links to pdf.
An extension named Adobe Acrobat – Create PDF should be present for which the Enabled checkbox would be unchecked. Switch on the Enabled checkbox for this extension.
Once enabled, the Create PDF extension toolbar and the right-click context menu options are displayed without requiring restart. The plugin will be grayed out (refer the below snapshot).