AOL error ac-3101 generally shows up when the files are not configured properly in your system. It can occur due to corrupted registry files, improper installation of any software and virus or malware attacks. To troubleshoot this error, follow this step-by-step method to overcome this hassle easily. ● Switch off your system > Restart > Log in as Admin. ● Hit the ‘Start’ button. ● And now, click All Programs > Accessories > System Tools > System Restore. ● A new window will open, select ‘Restore my computer to an earlier time’, and click ‘Next.’ ● Restart the system, and now you are sorted. If the error still shows up after pursuing these steps, give us a call at AOL customer service to get help from the experts.