How to Fix NetBT error 4321 Windows 10 [Steps]

What is ‘NetBT error 4321’ in Windows 10?

In this article, we are going to discuss on How to fix NetBT error 4321 Windows 10. You will be guided with easy steps/methods to resolve the issue. Let’s starts the discussion.

‘NetBT’: NetBT or NetBOS over TCP/IP, or NBT s networking protocol that allows legacy computer applications replying on NetBIOS API to be used on MODEM TCP/IP networks. Some applications still uses NetBIOS, and don’t scale well in today’s networks of hundreds of computers when NetBIOS is running over NBF. When properly configured, NBT allows those applications to be run on large TCP/IP networks without change. NetBT or NetBIOS provides three district services including Name service, Datagram distribution service, and Session service.

However, several Windows 10 users reported they faced NetBT error 4321 Windows 10 or NetBT error 4321 issue on their Windows 10/11 computer when they tried to play games or videos, browsing the web, and/or tried to launch a application. This issue indicates you are unable to launch certain applications, browse the web/internet, or unable to play game or video on Windows computer due to NetBT error 4321. Let’s take a look at error message.

“NetBT 4311 Error message:

Initialization failed because the driver device could not be created”

The possible reasons behind the issue can be the driver device that couldn’t be created that occurs once the network adapter is removed, and Microsoft Windows detects this issue and reinstall the adapters. Another possible reason behind the issue can be the incorrect log. A non-zero value is incorrectly returned with OS finds and references the network adapter. This error can also be appeared after the removal of a remote access service or when network adapter gets reinstalled.

NetBT error 4321 can be occurred due to corrupted/outdated device drivers in Windows PC, lack of enough storage space for such pieces the compatibility issues surface, corruption in system files or registry, and other Windows issues. It is possible to fix the issue with our instructions. Let’s go for the solution.

How to fix NetBT error 4321 Windows 10?

Method 1: Fix ‘NetBT error 4321’ with ‘PC Repair Tool’

‘PC Repair Tool’ is easy & quick way to find and fix BSOD errors, DLL errors, EXE errors, problems with programs/applications, malware or viruses issues, system files or registry issues, and other system issues with just few clicks.

⇓ Get PC Repair Tool⇓

Method 2: Update Device Drivers

Updating all necessary device drivers to latest & compatible version can resolve the issue.

Step 1: Open ‘Device Manager’ in Windows PC via Windows Search Box and look for the device driver that is showing ‘Yellow Exclamation Mark’ on it

Step 2: Right-click on problematic device driver and select ‘Update Driver’, and follow on-screen instructions to finish update process. Repeat the same step to update all other necessary drivers and once updated, restart your computer and check if the issue is resolved.

Download or reinstall device driver update in Windows PC [Automatically]

You can also try to update all Windows drivers including network adapter drivers and all other necessary drivers using Automatic Driver Update Tool. You can get this tool through button/link below.

⇓ Get Automatic Driver Update Tool⇓

Method 3: Uninstall problematic third-party applications

Another possible way to fix the issue is to uninstall the problematic third-party applications in computer.

Step 1: Open ‘Control Panel’ in Windows PC via Windows Search Box and go to ‘Uninstall a Program > Programs & Features’

Step 2: Find and right-click on the program that is causing error, and select ‘Uninstall’ to uninstall it and after that, restart your computer and check if the issue is resolved.

Method 4: Disable Automatic Restart option

You can also try to fix the issue by disabling Automatic Restart Option in your Windows computer.

Step 1: Type ‘View Advanced System settings’ in Windows Search Box open it from results appear

Step 2: Click ‘Settings’ in ‘Start-up and Recovery’ section, deselect ‘Automatically Restart’ option under ‘System Failure’ and then hit ‘Ok’ button to save the changes. Once done, restart your computer and check if the issue is resolved.


I am sure this article helped you on How to fix NetBT error 4321 Windows 10 with several easy steps/methods. You can read & follow our instructions to do so. That’s all. For any suggestions or queries, please write on comment box below.

Sakshi Anant Author