If one day, when opening PDF files with Adobe Reader, an error message appears “Acrobat failed to load its Core DLL”Chances are, your computer has been infected with Viruses. To overcome this situation, please follow each action below.
Fix “Acrobat failed to load its Core DLL” error
Step 1: Install reputable antivirus software, here you can use it Kaspersky AntiVirus to scan the entire system and remove the Rootkits (if any).
You can download the latest version here: Download Kaspersky
Step 2: Click Start Menu -> Control Panel —> Uninstall a program to remove Adobe Reader, by pressing Unistall
If during the uninstall process you get an error message “Error 20” then it can be overcome by referring to the error handling article “Error 20”.
Step 3: Reinstall the latest Adobe Reader software for the computer to update the software’s security flaws. You can download the latest version of Adobe Reader here: Download Adobe Reader
After you have done all the above steps, you can use Adobe Reader software to read PDF files normally as before without any problems.