Go to this MS WEBPAGE and download the DX redist pack. Even if you had the discs you will still have problems as the version of DX9 included on the discs is woefully out of date and are known to be incompatible with Win 10.ġ. As you have only copied over the FSX files you would not have any DX9 related files as they are System files and are stored outside of FSX. Win 10 does not ship with DX9 by default. The problem may be permission related with regards to how you installed Th1racer - Your issue is probably related to a fairly well known issue regarding Win 10. Spirittoo - The installer should have placed DX in the required location automatically.