PDF Documents Will Not Open in Internet Explorer 10 / 11

How to Resolve PDF Documents Will Not Open in Internet Explorer 10 / 11 

After setting Adobe Acrobat Reader or another application as the default application for files with a PDF extension, if PDF documents will still not open in IE 10 or 11, perform the following steps:

1. Run Regedit
2. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
3. Click Edit
4. Click New
5. Click DWORD
6. Enter Value Name: TabProcGrowth
7. Enter Value Data: 1
8. Click OK
9. close regedit
10. Restart the computer