User tries to combine 10 word documents (Office 2016) in Adobe Pro 2017 on a windows 10 PC. To access the services, you have to subscribe to Acrobat license/subscription.įor plans and pricing, you can refer to Plans and pricing | Adobe Acrobat DC You can also contact Adobe support for the plans and pricing and to place a new order Contact Customer Careįeel free to update this discussion for any further assistance. This is the reason you are getting the error message while combining any PDF files as you don't have any active subscription/license if Acrobat. You can also check the details of your plan through >Manage Account>Plans and Products, or you can also refer to the Adobe article Manage your Creative Cloud membership I have checked the records with your current Adobe ID(email) which you have used to sign-in on Adobe forums and found that the subscription of Acrobat Pro DC is canceled and inactive. We apologize for the inconvenience caused, as per the description above, you are not able to combine PDF files on Mac machine using Acrobat Pro DC, is that correct?