Cannot ENABLE SharePoint Integration.

Question

Our organization has a Sharepoint 2013 deployment and uses Acrobat Pro XI.  We use document libraries with with check in/check out and verioning enabled.  When opening a PDF from within a library, the document opens in Acrobat without issue but we do not receive any prompts to check the document out.  This prevents us even from manually checking out the document in sharepoint, opening the document, saving the document back to sharepoint because Acrobat tries to save it to a local AppData Temp directory.   I've seen a thousand answered posts about how to DISABLE SharePoint integration, but I'm just looking to get this functionality in the first place.  The problem could be related to a SharePoint setting but I cannot cind such a setting.  Our office documents prompt for checkout when opened as they should - Just not PDFs. 
***Some additional information:  From Acrobat, if I click  File>Open, then select "open from online account"  and connect to my sharepoint server I can check in and out, but some of our libraries are over 9GB and cause Acrobat to crash every time I try to open the library, so this is apparently not an option for us (although it would be nice!!!).
Thanks!

Answer 1

This is a user to user forum and the responding staff are volunteers (not on the support team).
SharePoint integration is of course supported as indicated by all the documentation, and it does work for most customers. Troubleshooting the problem here is more complex than other issues because it involves integrating two enterprise products and working with files across a network. There are literally thousands of possible environments and factors which could affect the functionality. It's difficult to fix issues that can't be reproduced internally.
While it looks like some of the issues above have found solutions, the original one has not for some users. More environment details may be required. Here are some troubleshooting steps to double check first:
Have an admin configure the server and clients as specified in the Admin Guide.
Use a supported browser.
Enable the "Adobe Acrobat Sharepoint OpenDocuments Component" and "Adobe PDF Reader" add-ins in IE.
Verify this folder exists on the server: %ProgramFiles%\Common Files\Microsoft Shared\web server extensions\<version>\TEMPLATE\XML
Verify Doclcon.xml exists in the above location.
Verify this line is correct: <Mapping Key="pdf" Value="icpdf.png" EditText="Acrobat Reader" OpenControl="AdobeAcrobat.OpenDocuments" OpenApp="AcroRd32"/>
Determine if the problem affects all users or some users. The former would likely indicate a server issue while the latter points to a client-side issue.
Verify you have write permissions to any location the Acrobat product or SharePoint needs to write to.
If you can't edit a PDF, check its security properties via Open File > Properties > Security.
If clicking on a PDF document in a SharePoint library shows the error "There was an error opening this document. The filename, directory name, or volume label syntax is incorrect.", then update SharePoint. See the Microsoft Technet Forum:  http://social.technet.microsoft.com/Forums/en-US/sharepointgeneral/thread/49aed23c-cf9c-43 39-8c17-ff1df65649a6/.
If the "Check Out and Open" PDF files in document libraries menu item is not present, make sure the latest is SharePoint update is not the March cummulative update for SP 2013. Microsoft confirmed a bug in that update. See https://forums.adobe.com/message/6579072#6579072
hth,
Ben