There are so many DLL files in the Windows operating system based computer. These DLL files help you to run various applications or programs in completing the technical tasks. But sometimes when you try to run any application, you will not be allowed to run it and get some error messages. You may see Swdir.dll is missing or corrupt error on the computer screen due to the missing or corruption of Swdir.dll file. It is really a very critical error issue that can harm the computer data very much if not resolved properly. You can go with some manual or automatic error fixing methods to fix Swdir.dll is missing error. For automatic fixing, you should use Advanced System Repair tool in the computer.