How to Fix Mfc71.dll

Tasks that can fix the error
1. Shut your system down. Turn it off completely and let it sit for a count of 10. Oftentimes, the system will find the missing file just by doing a hard reboot.
2. Update the Mfc71.dll security patch. Do this only if you're on a Windows 2000 or a Windows XP operating system. Download the file from Microsoft and install it.
3. Make sure your anti-virus software is up to date. This can usually be done manually after opening the anti-virus software. Since there are many anti-virus programs, each one updates differently. Generally, the icon is on the taskbar in the bottom right-hand side of your computer screen. Right click on the icon. Sometimes an 'update' command can be accessed at this point by scrolling to the 'update now' or something similar. Sometimes the anti-virus software has to be opened with a double click to be updated.
4. Perform a complete system scan for viruses. Be sure to scan the 'Temp,' 'System' and 'Program Files' as these are the files where the viruses have been known to be found. Depending on the size of your system, this can take up to several hours. Remove any identified Trojans or viruses found by the anti-virus software. The Mfc72.dll error is associated with the 'Mal/Generic-A [Sophos]' and the 'Trojan-Downloader [Ikarus].'
5. Update Internet Explorer to the latest version. Download the software from the Microsoft website. Install it and then reboot your system. Internet Explorer comes with a Mfc71.dll file and this will likely replace the missing one on your system.
6. Uninstall the software that is causing the error. Go to the 'Control Panel': 'Start'>'Control Panel'>'Add and Remove Programs.' Let the list populate and go down to the program that is causing the error. Click 'Remove.' When prompted, click 'Uninstall.' Reboot the system before reinstalling the software.