Winscp Available In: Overcoming Authentication Issues with PuTTY and Kerberos

As I navigated through the complexities of remote server connectivity, I encountered a peculiar problem. With WinSCP version 5.13.3 on Windows 10 and PuTTY version 0.70 installed, I was met with an error message that seemed to defy explanation: 'No supported authentication methods available (server sent: )'. Despite my best efforts to troubleshoot the issue, it continued to plague me.

To begin with, I checked if WinSCP was simply opening an already saved session, but this didn't resolve the problem. Upon further investigation, I discovered that when WinSCP opens a PuTTY session, I receive the same error message upon attempting to connect. What struck me as unusual was that WinSCP could connect to the server without any issues, with no special settings required.

In my quest for a solution, I tried various approaches. I obtained a new Kerberos key, allowed PuTTY to search for the key manually, and even specified the gssapi32.dll file myself. Unfortunately, none of these efforts yielded the desired result.

As I delved deeper into online forums, I found numerous discussions regarding this error message when the server sends a pubkey. However, my situation was unique in that the server sent nothing. Frustrated but not defeated, I continued to search for answers.

In a moment of clarity, I realized that I had accidentally overwritten my PuTTY settings with a blank template. This revelation led me to reconfigure my settings to their original state. To my surprise, even when I believed I had set everything up as before, I was no longer able to connect using PuTTY, receiving the same error message.

In conclusion, overcoming authentication issues between PuTTY and WinSCP requires patience, persistence, and attention to detail. It's essential to double-check settings and configurations to ensure that they are correct and consistent across all applications involved in the remote connection process.

Winscp available in