A file with the extension PIF is a Program Information File that was used to start MS-DOS programs under Windows.
The files contain information about how to start the program, eg settings for memory requirements or the directory in which the program is to be executed.
PIF files are similar to the lnk files. They are parsed by the ShellExecute function and treated as executable files.
Pif files can also be used to transmit malware or dangerous scripts. You should therefore not open PIF files sent by email.
Most often resolving problems with opening PIF files is very simple. Just install an appropriate program that supports such files. All of the listed programs support PIF files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of PIF files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate PIF files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Microsoft Windows applications is not on the list, select "Browse" option in order to manually locate the directory where Microsoft Windows has been installed.
Sometimes problems with opening PIF files may not lie with the application itself, but can arise due to other causes, such as: