Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Error in Tight VNC Viewer: Unsupported protocol: RFB 004.001

15 Jan 2013   #1
Mr Davo

Windows 7 (XP, by Virtualization)
Error in Tight VNC Viewer: Unsupported protocol: RFB 004.001

Hi Everyone,

I am seeing the following error when attempting to connect to a remote computer with TightVNC...

If anybody knows anything about this error or how to fix it can you please let me know?

Kind Regards,


My System SpecsSystem Spec
17 Jan 2013   #2

Windows 7 Home Premium 64 Bit

What version of VNC are you running?.
My System SpecsSystem Spec
24 Jan 2013   #3

Windows 7 x64

I am also experiencing this error. I'm running the newest version of TightVNC (2.6.4) on a Win 7 32bit machine. Also I am only experiencing this with one of our virtual machines as I am able to connect correctly to another. Not sure if it makes a difference, but I cannot connect to the machine running XP. The one that I can connect to is also running Win 7 32bit. Thanks for any assistance you can give!
My System SpecsSystem Spec


 Error in Tight VNC Viewer: Unsupported protocol: RFB 004.001

Thread Tools

Similar help and support threads
Thread Forum
"This PC has unsupported hardware" error message
On my Lenovo b570 laptop, I am randomly getting popups during games with "This PC has unsupported hardware" messages. Which nothing could be further from the truth. This laptop originally came preinstalled with Windows 7 and it never gave that error message with the old now defunct hard drive....
Hardware & Devices
Nvidia GTX970 aero unsupported error, games stutter frequently
so after a Nvidia driver update, I restarted my PC to find that it would switch to windows basic after 1-2 minutes and I couldn't revert it, I tried re running WEI, uninstalling the drivers completely, basically everything I can find, even Regedit and services.msc. I tried to play games that used...
Graphic Cards
Unable to load some web pages SSL protocol error.
This error: Error 107 (net::ERR_SSL_PROTOCOL_ERROR): SSL protocol error. Occurs on some web pages when using Chrome and firefox but not when using IE10, I have tried reinstalling google chrome but the error still shows up. Does anyone have any idea on how to solve this error? Thank you in...
Browsers & Mail
Tight fit?
Hey there everybody the idea is a define r4 case with a noctua NH d-14 cpu cooler and 2 exhaust fans on the top and a side intake does anyone know if there if there will be a clearance issue with the cpu cooler and the side intake or top exhaust fans?
PC Custom Builds and Overclocking
Win 7 and Tight VNC
I use Tight VNC to astis in managing computers at my school. I use a desktop running XP Pro, SP3. When I connect to a Win7, 64 bit laptop via Tight VNC 3.9, I must manually refresh the screen to see anything I have done such as click start, close a window, or type commands into the run box. Anyone...

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 16:03.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App