NDIS multicast error 0x8034000B fix

Quick answer

Run netsh int ip reset and update your network adapter driver from the manufacturer's site — not Windows Update.

What this error means

You're staring at 0x8034000B — ERROR_NDIS_MULTICAST_NOT_FOUND. This happens when Windows tells the Network Driver Interface Specification (NDIS) to remove a multicast IP address that the driver says was never added in the first place. It's like telling someone to take a book off a shelf that was never there.

I've seen this most often after a laptop wakes from sleep or hibernate, or when you switch between Wi-Fi and Ethernet. The driver loses track of addresses it previously subscribed to. It's not a hardware failure — usually it's a driver that doesn't handle state changes correctly.

The error won't crash your system, but it can cause network drops, make streaming apps lose connection, or screw up multicast-based services like UPnP or mDNS discovery.

Fix 1: Reset the network stack

This clears the messed-up state without reinstalling anything.

1. Open Command Prompt as Administrator. Press Win + R, type cmd, then Ctrl + Shift + Enter.
2. Run this exact command:

   netsh int ip reset

   After it runs, you'll see a message saying Resetting Global... and Resetting Interface.... That's normal.
3. Run:

   netsh winsock reset

   Wait for it to say Successfully reset the Winsock Catalog.
4. Now restart your PC. Not a shutdown+startup — a full restart: Click Start > Power > Restart.

After reboot, check if the error still appears in Event Viewer under Windows Logs > System. Filter by source NDIS.

Fix 2: Update the network driver (real fix)

Skip Windows Update. Go get the driver direct from the manufacturer.

1. Open Device Manager. Press Win + X and select Device Manager.
2. Expand Network adapters. Look for your Wi-Fi or Ethernet adapter. Common names: Intel, Realtek, Qualcomm, Broadcom.
3. Right-click the adapter and pick Update driver > Browse my computer for drivers > Let me pick from a list. But don't do that yet — it's better to download the latest driver first.
4. Go to the manufacturer's support site. For example:
   • Intel: Intel Wireless Download Center
   • Realtek: Check your PC maker's site (Dell, HP, Lenovo) for OEM drivers.
5. Download the latest driver for your exact adapter model and Windows version (10, 11, 64-bit).
6. Back in Device Manager, right-click the adapter, choose Uninstall device. Check Delete the driver software for this device. Click Uninstall.
7. Reboot. Windows will install a basic driver. Then run the downloaded installer you got in step 5.

After that, restart one more time. The error should be gone.

Fix 3: Disable power saving on the adapter

This stops Windows from killing the adapter during sleep.

1. In Device Manager, right-click your network adapter > Properties.
2. Go to the Power Management tab.
3. Uncheck Allow the computer to turn off this device to save power.
4. Click OK.
5. Also do this for any Bluetooth or Wi-Fi adapters listed.

Now test by putting your PC to sleep and waking it up. No error? You're good.

Alternative fix: Registry tweak for multicast stability

If none of the above worked, there's a registry key that forces NDIS to be more strict about multicast lists. This is for advanced users — back up your registry first.

1. Open Registry Editor: Win + R, type regedit, press Enter.
2. Go to:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NDIS\Parameters

3. Right-click in the right pane, choose New > DWORD (32-bit) Value. Name it MulticastListCacheSize.
4. Double-click it, set Value data to 32 (decimal). Click OK.
5. Close Registry Editor and restart.

This increases the cache size for multicast addresses. It doesn't fix a bad driver, but it gives the system more room to avoid losing track.

Prevention tip

Keep your network driver updated. I know, it's boring. But once every three months, check the manufacturer's site for your adapter. Don't rely on Windows Update — it often offers older drivers. And if you use virtual machines (VMware, VirtualBox), update their network drivers too — they're a common trigger for this error.

Also, if you use a VPN, disconnect it before sleeping the PC. Some VPNs mess with multicast subscriptions and trigger this error on wake.