I always use TeamViewer normally, but today my teamviewer reported the error “Protocol negotiation failed” and a lot of people also got this error, can help me fix this on TeamViewer?
Thank you for submitting your question to tvtoolsalterid.com, about the "Protocol negotiation failed" error you encountered related to IP problems. Specifically, a series of Teamviewer users in Vietnam received the error "A connection could not be established", making it impossible to connect between Teamviewers .
Fix protocol negotiation failed on TeamViewer
However, only the Remote Control feature does not work and can only connect to File transfer, Remote Control is a very important feature, not only controlling remote machine operation but also can remotely scan virus with teamviewer . Currently, there is no official answer from teamviewer as well as patch update, so please follow the article below to temporarily fix this.
FIX PROTOCOL NEGOTIATION FAILED WHEN CONNECTING ON TEAMVIEWER
Currently changing the hosts file in the system is the only way to help us use the Remote Control feature in Teamview, so we will proceed to change the hosts file.
NOTE: THE HOSTS FILE MUST BE CHANGED ON BOTH COMPUTERS TOGETHER.
Step 1: Access the computer at the following default address: C:\Windows\System32\drivers\etc
Turn off protocol negotiation failed error when connecting on TeamViewer
Step 2: Right-click on the hosts file and select Open With .
Step 3: In the selection, click Notepad to open it.
Step 4: Click here to get the entire code then copy it into Notepad
Step 5: Save notepad again and reopen Teamviewer.
Open Teamviewer again and connect normally.
https://thuthuat.taimienphi.vn/sua-loi-protocol-negotiation-failed-khi-ket-noi-tren-teamviewer-5835n.aspx
Thus, with the above troubleshooting Protocol negotiation failed error, you will be able to connect connect teamviewer remote control function normally, please note that both computers must be connected in this way while waiting for teamviewer to fix the error. Or you can refer to how to control the computer with chrome remote to try it.
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