Short for Dynamic Link Library, a DLL is a file used in Microsoft Windows platforms. It provides a library of subroutines which can be used by many programs to perform a specific set of tasks or functions. For example, a DLL file may provide the steps necessary to print a document. Without the DLL, the developers of the program would have to write all of the steps themselves and always be re-inventing the wheel.
Why am I seeing a DLL error?
Most users know DLL files from the errors they get on their computer either because the DLL file is missing or because the file had bad instructions and is generating an error. Typically these types of errors are resolved by updating or reinstalling the program.