How to Fix TeamViewer Protocol Negotiation Failed
- Blog
- September 22, 2022
Are you getting the “Protocol Negotiation Failed” error when trying to connect to a remote computer using TeamViewer? This error can be caused by a number of factors, but there are a few things you can try to fix it. In this blog post, we’ll show you how to fix the “Protocol Negotiation Failed” error in TeamViewer.
Table of Contents
How to Fix TeamViewer Protocol Negotiation Failed
What is TeamViewer Protocol Negotiation Failed?
TeamViewer is a remote access and remote desktop sharing software application. It is available for Microsoft Windows, macOS, Linux, iOS, and Android operating systems. With TeamViewer, users can remotely control a computer, view its desktop, and access files and applications.
However, users may sometimes encounter an error called “Protocol Negotiation Failed” when trying to connect to a remote computer using TeamViewer. This error can be caused by a number of factors, including incorrect firewall settings, an outdated TeamViewer version, or an incompatible operating system.
In order to fix this error, users can try a number of different solutions, such as updating TeamViewer, changing the firewall settings, or using a different remote access software application.
How to Fix TeamViewer Protocol Negotiation Failed
If you’ve ever run into the “Protocol Negotiation Failed” error when trying to use TeamViewer, you know it can be a frustrating experience. This error can be caused by a number of factors, but fortunately there are a few things you can try to get things working again.
First, try restarting both your computer and the TeamViewer application. If that doesn’t work, the next step is to check your firewall settings. Make sure that TeamViewer is allowed to communicate through your firewall, and also check to see if any proxy settings are enabled that could be blocking the connection.
If you’re still seeing the error, it’s possible that your router is blocking TeamViewer traffic. To check this, you can temporarily disable your router’s firewall and try connecting again. If that works, you’ll need to add an exception for TeamViewer in your router’s firewall settings.
If you’ve tried all of the above and you’re still seeing the “Protocol Negotiation Failed” error, the likely cause is a problem with your TeamViewer installation. In this case, the best course of action is to uninstall and then re-install TeamViewer.
Conclusion
We hope that this article has helped you to understand what the “Protocol Negotiation Failed” error means in TeamViewer, and how to fix it. As always, if you have any questions or comments, please feel free to reach out to us on our support page. Thank you for reading!
Further Reading
If you are still having trouble after following the steps above, you may want to check out the following resources for further reading.
How to Fix TeamViewer Protocol Negotiation Failed:
1. Make sure that you are using the latest version of TeamViewer.
2. Check your router’s firewall settings and make sure that TeamViewer is allowed through.
3. If you are behind a corporate firewall, you may need to whitelist TeamViewer’s IP address or domain.
4. Make sure that port 5938 is not blocked by your firewall.
5. Try temporarily disabling your firewall to see if that fixes the issue.
If you are still having trouble, please contact our support team for further assistance.
