PNRP stops working windows 10 1803

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If PNRP (Peer Name Resolution Protocol) stops working on Windows 10 version 1803, it could be due to various reasons. PNRP is a Windows service that enables peer-to-peer name resolution, and issues can occur due to configuration problems, service disruptions, or system settings. Here are some troubleshooting steps you can follow to diagnose and fix the problem:

  1. Check PNRP Service Status:
    Verify that the PNRP service is running. To do this, open the "Services" app by pressing Windows Key + R, then type services.msc, and press Enter. Look for the "Peer Name Resolution Protocol" service and ensure it is set to "Running" and "Automatic" startup type.

  2. Check Firewall Settings:
    PNRP uses UDP port 3540 for communication. Ensure that your firewall allows inbound and outbound traffic on this port. If you have third-party security software, check its settings as well.

  3. Update Windows:
    Ensure that your Windows 10 version 1803 is up-to-date with the latest updates and patches. Microsoft may have released fixes for known PNRP issues in subsequent updates.

  4. Check Network Connectivity:
    Verify that your network connection is working correctly and there are no network-related issues. Ensure you can ping other computers and access resources on your local network.

  5. Reset PNRP Cache:
    PNRP maintains a cache of peer names for faster resolution. Sometimes, the cache may become corrupt or outdated. Open an elevated Command Prompt (run as administrator) and run the following commands:

    arduino
    net stop p2pimsvc
    
net stop pnrservice
    
net start pnrservice
    
net start p2pimsvc

  6. Check Network Discovery Settings:
    Ensure that Network Discovery is enabled on your system. To check this, go to "Control Panel" > "Network and Internet" > "Network and Sharing Center" > "Advanced sharing settings." Make sure "Turn on network discovery" is enabled.

  7. Check Group Policy Settings:
    Check if there are any group policy settings that might be affecting PNRP functionality. In some cases, certain policies might restrict or disable specific network-related features.

  8. Antivirus and Security Software:
    Temporarily disable your antivirus and security software to check if they are interfering with PNRP.

  9. Check System Event Logs:
    Review the system event logs for any errors or warnings related to PNRP. Look for event IDs that might indicate problems with PNRP service startup or operation.

  10. Consider Updating Windows:
    If possible, consider updating Windows 10 to a newer version (if available) as version 1803 is relatively old, and Microsoft has released several updates and fixes since then.

If the issue persists after trying the above steps, you may want to seek assistance from Microsoft support or Windows community forums for more specific troubleshooting steps.