You can also try manually installing the file by manually checking the system folders in Windows. If you’re using Windows 10, however, you will have to do it in the correct way. This step should take a few seconds and won’t require any special skills. If you cannot find the file, you can simply copy it and paste it into the C:WindowsSystem32 folder. The first is to search for the missing file on Microsoft’s website. There are two different ways to manually install a DLL file in Windows 10.