Fix: vJoy Driver Version (219) Does Not Match DLL Version (218)

The error ‘vJoy Driver Version (219) Does Not Match DLL Version (218)’ looks cryptic, but it is one of the most precise errors vJoy produces. It names both halves of the problem and both version numbers. Once you decode those numbers, the fix is mechanical: the feeder’s DLL and the installed driver must come from the same release. This guide decodes the message, explains why the mismatch happens, and gives both fixes — replacing the DLL and reinstalling a matching build.

Decoding 219 and 218

The numbers are version numbers written as hexadecimal WORD values. 0219 corresponds to driver version 2.1.9, and 0218 corresponds to DLL version 2.1.8. So the message ‘driver version (219) does not match DLL version (218)’ means, in plain terms: your installed vJoy driver is the 2.1.9 line, but the application you just launched is carrying a vJoyInterface.dll from the 2.1.8 line. The driver and the DLL are a matched pair by design, and vJoy refuses to let a feeder run against a driver from a different release. The reverse pairing produces the reverse message: a 2.1.8-era driver with a 2.1.9 DLL in the feeder folder will complain just as firmly.

Why the mismatch happens

vJoy itself does nothing without a feeder application, and feeders commonly bundle their own copy of vJoyInterface.dll in their program folder. That bundling is convenient when versions line up and confusing when they do not. The typical story: you upgraded or reinstalled the vJoy driver, moving from 2.1.8 to 2.1.9, while your feeder kept the older DLL it shipped with. Or you installed an older feeder that bundles a newer DLL than your driver. Either way, neither program is necessarily faulty. Each half works — with its own release. The error is vJoy catching the mix before it can cause stranger behaviour.

Mixes like this are also a symptom of a wider habit this troubleshooting section warns about repeatedly: installing several vJoy builds over each other. If you have run installers from the original line and from the later forks at different times, the chances that some folder on your system holds a DLL from a different release go up sharply.

Fix A: give the feeder the DLL from the same release

  1. Identify your installed driver version first. The error itself tells you: if it says driver 219, your driver is the 2.1.9 line. You can cross-check in Configure vJoy and in the vJoy entry under Settings, Apps.
  2. Find the feeder folder: the directory of the application that shows the error. Look inside it for vJoyInterface.dll. That bundled copy is the file the feeder actually loads, regardless of what is installed elsewhere.
  3. Replace that bundled vJoyInterface.dll with the DLL from the same release as your installed driver. Take the DLL from the matching vJoy installation or release package — for a 2.1.9 driver, the DLL from the 2.1.9 release. Keep a backup copy of the file you replace, so you can undo the change if the feeder behaves unexpectedly.
  4. Restart the feeder completely. A feeder that has already loaded the old DLL will keep using it until the process exits.
  5. Confirm the mismatch message is gone and the feeder connects and moves the virtual axes, ideally checked in vJoy Monitor.

Fix B: reinstall a matching build

If you would rather not swap files inside a feeder folder — or several feeders are complaining at once — fix the pairing from the driver side instead. Decide which single build you will run, then do a clean install of it: uninstall existing vJoy entries, reboot, remove leftover driver-store entries if needed using the documented pnputil procedure, and install that one build. Then check each feeder: any feeder bundling a DLL from a different release still needs Fix A for its own folder, because reinstalling the driver does not rewrite files inside third-party program folders. In practice, one clean driver install plus one DLL swap in the complaining feeder closes nearly every case.

Which build should the pair be?

Match matters more than newness, but if you are choosing anyway: the BrunnerInnovation 2.2.2.0 build is the newest release and the only one explicitly documented for Windows 10 and Windows 11; the njz3 2.2.1.1 build is the signed force-feedback fork; the original 2.1.9.1 build is attestation-signed for Windows 10 and remains the documented compatibility fallback if a feeder misbehaves on the 2.2.x line. Whichever you pick, the driver and every feeder’s vJoyInterface.dll must tell the same version story. Our build comparison guide lays out the three builds side by side.

How to confirm it is fixed

  1. The feeder starts with no version-mismatch message.
  2. vJoy Monitor shows axis and button movement when the feeder runs.
  3. Other feeders on the same machine also connect; if one still complains, its folder still holds a mismatched DLL.
  4. After a reboot, the same feeder still connects. Persistence rules out a one-off load from a cached process.

If the message survives with the numbers unchanged after a verified DLL swap, re-read the numbers carefully: it is easy to fix the pairing you expected rather than the one the message reports. The numbers in the message are the ground truth — 219 is the driver, 218 is the DLL the feeder loaded, every time.

Related guides

vJoy is an unofficially documented tool on this site. vJoy itself was created by Shaul Eizikovich, with later signed forks by other maintainers. This site is not the official vJoy project site.

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