After you close Acrobat 10.1.7 or 11.0.03 on Windows 8, it continues to use portion of the CPU. Acrobat.exe continues to show up in taskbar even after you've closed the Acrobat application.


Disclaimer: This procedure involves editing the registry. Adobe doesn't provide support for editing the registry, which contains critical system and application information. Make sure to make backup of system’s registry before making these edits. ( For more information about the registry, see the Windows Help.

After creating registry backup, follow the steps below:

  1. Launch regedit (Press the shortcut “Windows key + R” to open the Run dialog, type regedit and press OK).
  2. Click OK on the UAC dialog if asked.
  3. Navigate to the key: [HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers]
  4. Under this key, find a value that matches the Acrobat.exe installation location on your computer. For example, it could be "C:\Program Files (x86)\Adobe\Acrobat 11.0\Acrobat\Acrobat.exe."
  5. Delete just this value (for Acrobat.exe) by right-clicking the value, and selecting delete.
  6. Restart the system (optional), and then launch and close Acrobat.

Additional information

An incompatability between Acrobat 11.0.03 and Acrobat 10.0.7 with the Program Compatibility Assistant on Windows 8 causes this issue.

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