Error: There is a problem with Adobe Acrobat/Reader
Scenario
You may see this error when you try to open Adobe Acrobat or Adobe Reader. (The application may be in Protected Mode when it is launched.)
Error message
There is a problem with Adobe Acrobat/Reader. If it is running, please exit and try again. (523:523)
Solution
In Adobe Acrobat, choose Edit > Preferences > Security (enhanced) and clear the
Enable Protected Mode at startup
checkbox.Internal use only
Refer to TFS 1069451 for more information.
Below are the registry keys to change.
For Reader DC:
HKCU\Software\Adobe\Acrobat Reader\DC\Privileged DWORD Value: bProtectedMode Setting: 0x0 For Reader 11:
HKCU\Software\Adobe\Acrobat Reader\11.0\Privileged DWORD Value: bProtectedMode Setting: 0x0 There are “enterprise” keys that show up at HKLM that might work as well, but this has not been tested. For Reader DC, it is supposed to be: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Acrobat Reader\DC\FeatureLockDown