The AOL Error 47-ac-3101 is caused mainly by corrupted files in your operating system. And in order to resolve this error one must do the needful:
• Log in as administrator after starting your computer
• Go to Start> All Programs> Accessories> System Tools and then System Restore
• Select the option of ‘Restore my computer to an earlier time’
• And now select the most recent point of system restore
• Confirm it by clicking Next and Now restart the computer for completing the process
If after applying these steps the problem does not go away then you are free to call AOL Mail Tech Support Number where technicians will help you in resolving the issue completely.