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Unable to open PDFs in IE11.  Error 0:104.

bankonit
bankonit asked
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Last Modified: 2016-09-14
Been getting an error when trying to open any PDF in browser:

"There is a problem with Adobe Acrobat/Reader.  If it is running, please exit and try again.  (0:104)

This is the envrionment:

OS:  Windows Server 2012 R2 (RDS)
Adobe Version:  Running both Adobe Acrobat Standard XI (11.0.07) and Adobe Reader DC (2015.017.20053)
Browser:  IE 11 (11.0.9600.18427) and Chrome (PDFs work fine in Chrome)

Steps I have already tried:
- Repair on both Adobe versions
- Complete uninstall and reinstall of Adobe
- Reset IE
- Verified default registry value was correct at HKEY_CLASSES_ROOT\SOFTWARE\Adobe\Acrobat\Exe
- Disabling "Adobe PDF Reader" addon in IE does work, but is not an acceptable solution for us.
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