Open GraphicsConfig.cfg with Notepad. Look for these lines:

Unlike modern games that automatically scale to new hardware, Sonic Generations uses an aging configuration caching system (via the Hedgehog Engine). When you launch the game, it performs a hardware ID scan (GPU, VRAM, monitor EDID, and DirectX capabilities). If the saved Configuration.config file contains IDs that don’t match your current hardware, it triggers this warning.

The “detected configuration does not match” error in Sonic Generations is not a bug in the sense of a crash—it is a feature of common to early 2010s Japanese PC ports. Sega’s developers prioritized preventing configuration tampering over user convenience.

Privilege conflicts can prevent the configuration tool from saving your hardware profile to the Windows Registry. Go to your Sonic Generations installation folder. Right-click ConfigurationTool.exe and select . Go to the Compatibility tab. Check the box for Run this program as an administrator . Click Apply and OK . Repeat these steps for SonicGenerations.exe .

(Optional) Check and select Windows 7 . Repeat these steps for ConfigurationTool.exe . 5. Disable Integrated Graphics (Last Resort)

[Display] ScreenWidth=1920 ScreenHeight=1080 RefreshRate=144 FullScreen=1 Aspect=1.77778 VSync=1

To fix the "The detected configuration does not match your current hardware" error in Sonic Generations , you must

Now rev up those boost gauges—Green Hill Zone awaits.

The error will be suppressed because the game skips detection when the config is read-only.

Re-run the configuration tool to ensure it now sees the correct GPU.

Select when prompted, set your resolutions, and hit Save . 2. Run Configuration Tool as Administrator

This error is especially prevalent on laptops that use switchable graphics. The configuration tool often only detects the low-power integrated Intel GPU. When the system tries to switch to the more powerful discrete NVIDIA or AMD GPU for better performance, the mismatch triggers the error.

Inside the root folder, right-click and select Properties .