Install and configure ReShade for FSX or FSX: Steam Edition, choose the right DirectX API, tune effects, and fix crashes or missing overlays.
To install ReShade for FSX or FSX: Steam Edition, run the ReShade installer, select the actual fsx.exe, and choose the API that matches FSX’s DirectX mode. Install a shader package, start FSX, open the ReShade overlay, create a preset, and enable only a few lightweight effects first.
Which DirectX option should I choose for FSX?
Your ReShade API must match the DirectX mode selected inside FSX. Check the simulator’s graphics settings before installing; changing the Preview DirectX 10 option later may require ReShade to be reinstalled for the other API.
| FSX graphics mode | ReShade installer option | Proxy file normally used |
|---|---|---|
| Default mode with DirectX 10 Preview disabled | DirectX 9 | d3d9.dll |
| DirectX 10 Preview enabled | DirectX 10/11/12 | dxgi.dll |
ReShade does not repair FSX’s native DirectX 10 rendering faults, missing textures or incompatible add-ons. It only post-processes the completed image. Steam users dealing with uncertain installation folders can consult our Steam Edition folder and add-on compatibility notes.
How to install ReShade for FSX
ReShade must be installed beside the simulator executable, not in Addon Scenery, Modules or a separate preset folder.
- Close FSX and related utilities. Shut down the simulator before changing graphics wrapper files.
- Find the real executable. A typical boxed installation places it under
C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X\fsx.exe. A typical Steam installation usesC:\Program Files (x86)\Steam\steamapps\common\FSX\fsx.exe, although a custom Steam library may be elsewhere. Do not select a desktop shortcut orSteam.exe. - Check for an existing graphics wrapper. Look beside
fsx.exefor files such asd3d9.dllordxgi.dll. ENB, SweetFX and other graphics tools may use the same names. Back up any existing file and identify what installed it before proceeding; blindly overwriting one is a common cause of startup crashes. - Run an unmodified ReShade installer. Select
fsx.exeand let the installer detect FSX’s 32-bit architecture. Do not manually substitute a 64-bit ReShade DLL. If Windows denies access to a protected installation folder, rerun the installer with administrator permission. - Select the matching rendering API. Choose DirectX 9 for normal FSX rendering or the grouped DirectX 10/11/12 option when DirectX 10 Preview is enabled.
- Install a small shader selection. Begin with the basic colour, sharpening and anti-aliasing effects offered by the installer. Selecting every package creates a cluttered overlay, increases shader compilation time and makes errors harder to isolate.
- Launch a simple free flight. ReShade should display a short banner while FSX starts. Open its overlay—normally with the
Homekey—and complete the built-in tutorial. - Create a separate preset. Give the preset a recognisable name and save it as an
.inifile. If FSX is underProgram Filesand changes will not save, use a writable preset folder under your Windows user profile rather than disabling User Account Control.
What ReShade settings work well in FSX?
A restrained preset usually suits FSX better than a large stack of effects. ReShade processes the entire frame, including cockpit instruments, menus, labels and text, so aggressive contrast, bloom or sharpening quickly makes the simulator harder to use.
| Effect type | Recommended approach | Main drawback |
|---|---|---|
| Levels, curves or tonemapping | Use small adjustments to correct contrast and colour | Crushed shadows can hide cockpit detail |
| Sharpening | Enable one sharpening shader at a low setting | Excess strength produces halos and shimmering |
| SMAA or FXAA | Use one only if native FSX anti-aliasing is insufficient | Post-process AA can soften gauges and text |
| Bloom or ambient light | Keep subtle and test in daylight and at night | Bright skies and illuminated panels can wash out |
| Depth of field or ambient occlusion | Leave disabled until the depth buffer is proven reliable | High graphics cost and frequent depth or interface artefacts |
Do not stack several sharpening or anti-aliasing shaders. Native multisample anti-aliasing handles aircraft edges differently from ReShade’s final-image filters, so ReShade AA is not a direct replacement in every scene.
FSX is often limited by its main CPU thread, but ReShade adds GPU work. If the graphics card is already near its limit, heavy effects can still reduce frame rate sharply; our guide to FSX hardware and performance limits explains where the simulator usually bottlenecks. For changes beyond post-processing, use our broader FSX realism and graphics settings rather than trying to make ReShade correct every visual weakness.
Why is ReShade not working in FSX?
Most FSX ReShade failures come from selecting the wrong executable, choosing the wrong DirectX API or overwriting another add-on’s wrapper DLL.
| Symptom | Likely cause and fix |
|---|---|
| No startup banner or overlay | Confirm the ReShade files are beside the active fsx.exe. Reinstall using the API that matches the DirectX 10 Preview setting and check whether a ReShade log was created there. |
| FSX crashes or shows a black screen immediately | Remove ReShade through its installer and restore any wrapper file that existed beforehand. Then test FSX without ReShade before attempting a clean installation. |
The Home key does nothing | Look for the startup banner to confirm ReShade loaded. Laptop function-key modes and other overlays can intercept the key, so disable competing overlays one at a time. |
| Preset changes disappear after closing FSX | The simulator cannot write to the chosen folder. Save the preset in a user-writable location and check that its file is not read-only. |
| Red shader compilation errors appear | The effect package may be incomplete or incompatible with that ReShade release. Re-run the installer, refresh the installed effects and remove packages you do not use. |
| Depth effects flicker or affect the wrong areas | FSX’s accessible depth buffer can be unreliable, especially with certain anti-aliasing and rendering configurations. Disable depth-dependent effects and retain colour and sharpening filters. |
How do I uninstall ReShade from FSX?
The safest removal method is to run the same ReShade installer, select fsx.exe and choose its uninstall option. Test FSX afterwards in the same DirectX mode used during installation.
For manual removal, delete only files confirmed as belonging to ReShade, normally its matching d3d9.dll or dxgi.dll, configuration, log, preset and shader folder. If a wrapper DLL existed before ReShade was installed, restore that backup instead of deleting it; otherwise the older graphics add-on may stop working.