Fixing Protocol Negotiation Failed on TeamViewer

Buzz

Currently, many users of TeamViewer are encountering the Protocol Negotiation Failed error, preventing remote control of their PCs. In this article, we guide you on how to troubleshoot and fix the Protocol Negotiation Failed error on TeamViewer when using an iPhone to control your computer or laptop. Join us as we walk you through the solutions.

- For Android phone users, you can use the DNS Changer app to modify them. Refer to the process of changing Android DNS that we have previously demonstrated. After resetting the DNS, restart your TeamViewer.

Change Android DNS

that we performed earlier. After resetting the DNS, restart your TeamViewer.

2. Fixing Protocol Negotiation Failed on the Controlled Device (PC)

On the controlled device, you can resolve the Protocol Negotiation Failed error using

two different methods.

One is by using Hotspot Shield software and modifying the host file, and the other is setting a static IP along with changing DNS.

2.1. Using Hotspot Shield and Modifying the Host File

- Download Hotspot Shield:

Dynamic Guardian

After downloading and installing,

don't rush to run Dynamic Guardian

we need to modify the host file. Follow these steps to make the changes.

+ Open the directory '

C:\Windows\System32\drivers\etc

' locate and open the host file using Notepad or Wordpad.

+ Add and save the changes.

37.252.249.4 server20901.teamviewer.com
37.252.249.4 server20902.teamviewer.com
37.252.249.4 server20903.teamviewer.com
37.252.249.4 server20904.teamviewer.com
37.252.249.4 server20905.teamviewer.com
37.252.249.4 server20906.teamviewer.com
37.252.249.4 server20907.teamviewer.com
37.252.249.4 server20908.teamviewer.com

The purpose of modifying the host file is to 'trick the TeamViewer server. Then launch Hotspot Shield and press Connect.

2.2. Set up a static IP along with changing DNS

Below is the procedure for Windows 7; higher operating systems can perform a similar process (with slight differences).

- First, click on the Internet network icon at the bottom right of the screen, choose Network and Sharing Center => Local Area Connection Status when the Local Area Connection Status window appears. => Click Properties, select Internet Protocol Version 4 (TCP/IPv4) and press Properties.

- A new window will appear; set a static IP in the Use the following IP address section and go to the DNS section. Click on Use Following DNS Server Addresses and enter international DNS addresses.

+ Such as Norton's:

198.153.192.001

198.153.194.001

+ Or Google DNS

Use the following DNS server addresses: 8.8.8.8
8.8.4.4

Frequently Asked Questions

What steps can I take to resolve the Protocol Negotiation Failed error on TeamViewer?

To resolve the Protocol Negotiation Failed error on TeamViewer, you can modify DNS settings using an app or change the host file on your controlled device. Additionally, setting a static IP can also help.

How do I change the DNS settings on my Android phone for TeamViewer?

To change DNS settings on your Android phone, use the DNS Changer app. Follow the provided instructions to reset the DNS, and then restart TeamViewer to see if the issue is resolved.

Is it necessary to modify the host file to fix the Protocol Negotiation Failed error?

Yes, modifying the host file is essential. This action can help 'trick' the TeamViewer server, allowing you to establish a remote connection. Make sure to follow the steps carefully.

Can setting a static IP address resolve issues with TeamViewer connections?

Yes, setting a static IP address can resolve connection issues with TeamViewer. This involves navigating to your network settings and entering a static IP along with the appropriate DNS addresses.

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