This site is being deprecated.
Please see the official X‑Plane Support page for help.
You should not need to uninstall X-Plane unless you've installed plugins that have modified our default files. You can reset preferences or try to update the sim to make sure you have all default files. Here is info on those steps in the manual, but this will differ if you are using Steam (you'll need to verify the file integrity instead of using the updater option for example).
This site is no longer being actively maintained.