ViGEmBus is the background driver that makes DSX’s controller emulation actually work, it’s what takes your DualSense’s signals and translates them into a virtual Xbox 360 or DualShock 4 controller your games can read. If it’s missing, corrupted, or blocked, DSX will throw a “ViGEmBus Driver Missing” error and refuse to connect to your controller.
Here’s how to actually fix it, in order from simplest to more involved.
Run DSX’s Built-In Installer First
If you’ve recently reinstalled DSX or set up a new PC, the simplest fix is often just triggering the installer that’s already built into the app.
- Open DSX and go to Settings
- Look for a Controller/Driver Setup option
- Click to install ViGEmBus if it’s offered
- Follow the prompts, then restart your computer fully once it finishes, this lets Windows properly register the new driver
If Clicking Install Does Nothing
Sometimes the app tells you the driver is missing, but the install button doesn’t seem to do anything. This usually means leftover files from a previous ViGEmBus installation are blocking a clean install.
- Close DSX completely
- Press Win + R, type
appwiz.cpl, and hit Enter to open Programs and Features - Search for “ViGEm Bus Driver” or “Virtual Gamepad Emulation Bus” in the list
- Right-click it and uninstall
- Restart your PC
- Go back to DSX and try the installer again, it should now install cleanly without the old files interfering
Clearing Blocks in Device Manager
Occasionally Windows installs the driver but flags it with a warning icon due to a security conflict, which makes it effectively invisible to DSX even though something is technically installed.
- Press Win + X and open Device Manager
- Scroll down and expand “System devices”
- Look for “Virtual Gamepad Emulation Bus” or a similar Nefarius-branded entry
- If it shows a yellow warning icon, right-click it, select Uninstall device, and check “Attempt to remove the driver for this device” if that option appears
- Once removed, download ViGEmBus fresh from its official GitHub release page and run the installer as administrator
Getting it directly from the official GitHub page, rather than any third-party mirror, matters here specifically because you’re dealing with a system-level driver, running something tampered with at this level is a genuinely bigger risk than a regular application.
Installing Missing Visual C++ Dependencies
ViGEmBus relies on Microsoft’s Visual C++ runtime to function correctly. If that’s missing or outdated, the driver can fail to initialize even when it appears installed.
- Go to Microsoft’s official support page and download the Visual C++ Redistributable (2015–2022), specifically the x64 version
- Run the installer, if it detects an existing installation and offers to Repair, accept that
- Reboot your PC once it finishes
Running DSX as Administrator
If drivers seem to install correctly but still fail to load reliably, running DSX itself as administrator can resolve permission-related issues that prevent it from properly initializing the virtual controller bus. Right-click DSX’s shortcut or executable and select “Run as administrator,” and consider setting this as the default if the issue keeps recurring (through the executable’s Properties, under the Compatibility tab).
When Nothing Above Fixes It
The error persists even after a completely fresh ViGEmBus install: Double-check Windows itself is fully updated, an outdated Windows build can occasionally cause driver installation issues unrelated to ViGEmBus specifically.
Device Manager shows no ViGEmBus entry at all, even after installing: This can indicate the installer didn’t complete successfully. Try running the official installer again as administrator, watching for any error messages during the install process itself rather than just checking afterward.
Everything looks correctly installed but DSX still won’t detect your controller: At this point the issue may not be ViGEmBus-specific at all. Our Troubleshooting guide covers broader connection problems, and our Drivers page walks through the full driver setup process end to end if you want to start over from scratch and verify each step.
Why This Error Happens More Often Than You’d Expect
ViGEmBus sits at a fairly low level in Windows’ driver stack, which makes it more sensitive to things like antivirus interference, incomplete Windows updates, or leftover files from a previous install than a typical application would be. It’s not that the driver itself is fragile, it’s genuinely stable once properly installed, but the installation process has more points where something can go slightly wrong compared to installing a normal piece of software. This is part of why a clean uninstall-then-reinstall resolves the issue so often, it’s less about the driver being broken and more about clearing out whatever residual state was preventing a fresh, correct installation from completing.
A Preventive Habit Worth Adopting
If you’re setting up a new PC or doing a clean Windows install, installing ViGEmBus and restarting before installing DSX itself (rather than doing everything in one session and restarting once at the end) can help avoid some of these conflicts before they start. It’s a small extra step, but giving Windows a chance to fully register one driver before layering on the next tends to produce a cleaner result than installing everything back to back and hoping it all sorts itself out on a single restart.