I recently backed up my data and I had moved the vnc viewer executable from my PC to my portable hard disk.

Realizing that I no longer had vnc, I got the latest one, but all of a sudden I could not connect to my server anymore and got authentification failure.

So I moved the VNC exectuable back from my portable HD to my local HD. And I am still getting Authentification failure errors.

I had a certain setup and I don't want to re-create it, do you know how I can recover or what happened to get auth failures all of a sudden ?

I checked and the vncserver process is running fine. Old VNC viewer: vnc-4_1_3-x86_win32_viewer.exe New one:


Make sure the server and viewer are the same versions. VNC is not a complicated application to setup. Worse case spent the 5mins to re-set it up. Another solution to consider is TeamViewer. It has better functionality then VNC, is encrypted and does not require port forwarding.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.