When you launch Adobe Acrobat or Adobe Reader, you receive the error “Acrobat Failed to Load core DLL.”
Use one of the following options to repair the installation to replace any possible missing or corrupt files:
- The Help menu in Adobe Acrobat or Adobe Reader.
- The Add/Remove Control Panel in Windows.
Launch Adobe Reader/ Adobe Acrobat, and click on "Edit"-> "Preferences".
Adobe Acrobat X/Adobe Acrobat XI
Click on Security (Enhanced), and Protected View options.
Adobe Reader XI
Click on Security (Enhanced), and uncheck the "Enable Protected Mode at startup" check box.
Adobe Reader X
Click on General, and uncheck the "Enable Protected Mode at startup" check box.
If you are using a tool to push a registry entry for multiple users, you can disable Protected Mode in the Registry:
HKCU/Software/Adobe/Acrobat Reader/[VERSION_NUMBER]/Privileged/bProtectedMode = 0x00000000
Make sure that Adobe Acrobat or Adobe Reader are installed to the local system drive. Installing on a mapped drive is not a supported configuration.