option to automatically restore missing or corrupted core files. Use the Creative Cloud Cleaner Tool : If a standard repair fails, use the Adobe Creative Cloud Cleaner Tool
Reinstall using your original installation media or official download links. Important Technical Note adobe acrobat xi pro amtlib dll top
: Downloading amtlib.dll from unofficial sites is highly discouraged, as these files are often modified to bypass licensing (cracks) and can contain malware . option to automatically restore missing or corrupted core