Visual Studio 2022 KMDF Driver Project "Build Succeeded" but No .sys File is Generated

If you get “Build succeeded” but no .sys output, the likely cause is a corrupted Visual Studio 2022 installation.

What fixed it for me was a full reinstall:

• Uninstalled Visual Studio 2022, WDK, and SDK
• Deleted the project solution (kept the main code file)
• Rebooted the PC
• Reinstalled Visual Studio 2022 (with the C++ workload + WDK extension)
• Installed the Windows SDK (offline via the ISO)
• Installed the Windows Driver Kit
• Opened VS 2022 → created a new “Kernel Mode Driver, Empty (KMDF)” project

After that, the build generated the .sys file normally.

The only thing I hadn’t tried before was reinstalling Visual Studio itself, since I didn’t suspect it was the cause.