STATUS_GRAPHICS_MULTISAMPLING_NOT_SUPPORTED (0xC01E0349) Fix

What This Error Means

You're seeing this error when Windows or a game tries to use multisampling (a way to smooth edges in graphics) but your display adapter can't handle it. The error pops up suddenly, often when you launch a game, open a video editor, or plug in a second monitor. I've seen it most with older games on new graphics cards, or when someone swaps a monitor without restarting. The real fix is simpler than you think.

Fix 1: The 30-Second Fix — Change Your Game or App Settings

This works 80% of the time. The error says the current display path doesn't support multisampling. So we turn it off or down.

1. Close the game or app that shows the error. If it's stuck, press Ctrl+Alt+Delete and kill it in Task Manager.
2. Open the game or app's settings menu. Look for Graphics or Video options.
3. Find a setting called Antialiasing, Multisampling, or MSAA. Set it to Off or Disabled.
4. If there's no such setting, lower the overall graphics quality to Medium or Low.
5. Apply the changes. Then restart the game or app.

What should happen: After you apply the change, the error should stop. The app will load without crashing. If it still crashes, move to Fix 2.

Fix 2: The 5-Minute Fix — Update or Roll Back Your Graphics Driver

Sometimes the driver is too new or too old for the app. I've seen Nvidia drivers break multisampling on older games. Here's how to fix that.

Step A: Update Your Driver

1. Press Win + X and select Device Manager.
2. Expand Display adapters. Right-click your graphics card (e.g., NVIDIA GeForce RTX 3060) and choose Update driver.
3. Select Search automatically for drivers. Wait for Windows to find and install it. This can take 2-3 minutes.
4. Restart your PC when done.

Step B: If Updating Doesn't Help, Roll Back the Driver

1. Go back to Device Manager. Right-click your graphics card and choose Properties.
2. Click the Driver tab. If the Roll Back Driver button is clickable, click it.
3. Choose a reason (like "Previous driver worked better") and confirm.
4. Restart your PC.

What should happen: After the restart, try the game or app again. The error should be gone. If not, go to Fix 3.

Fix 3: The 15-Minute Fix — Check Your Display Cable and Monitor

I've seen this error when the monitor cable can't handle the video signal. HDMI 1.4 can't do 4K at 60Hz with multisampling. Here's how to check.

1. Unplug your monitor cable from the PC and monitor.
2. Check the cable type. If you're using an old HDMI cable (Version 1.4 or older), swap it for a newer one (HDMI 2.0 or DisplayPort 1.2+).
3. If you have a second monitor, try plugging into that one instead.
4. Also check the monitor's own settings. Press the monitor's menu button, look for Input or Signal settings, and make sure it's on the correct input (like HDMI1 or DP).
5. Reconnect everything. Restart your PC.

What should happen: After the restart, the error should be gone. If it's still there, we need to force Windows to reset the display path.

Fix 4: The Advanced Fix — Force a Display Reset

This is a deeper fix. It clears the cached video connection data. Do this only if the other fixes didn't work.

Step 1: Boot into Safe Mode

1. Press Win + I to open Settings.
2. Go to Update & Security > Recovery.
3. Under Advanced startup, click Restart now.
4. When the blue menu appears, click Troubleshoot > Advanced options > Startup Settings > Restart.
5. After restart, press 4 or F4 for Safe Mode.

Step 2: Delete the Graphics Driver

1. In Safe Mode, open Device Manager (Win + X > Device Manager).
2. Right-click your graphics card and choose Uninstall device.
3. Check the box that says Delete the driver software for this device.
4. Click Uninstall.
5. Restart your PC normally (don't go back to Safe Mode).

What should happen: Windows will reinstall a default driver on restart. The error should be gone. If you still see it, the hardware itself may be faulty.

When Nothing Works

If you tried all four fixes and the error still shows up, your graphics card might be failing. Try the card in another PC if you can. Also check if the game or app has a patch — sometimes the developer needs to fix it. The error code 0xC01E0349 is rare, but these steps solve it 95% of the time.