VNC server doesn’t have to have certificate

92 zhlédnutíVirtuální servery

Trying to connect to (where x numbers associated with my VPS SSD) with ssvnc I get the message „An Error occurred in fetching SSL Certificate from…“

Accessing the same address through a web browser, a SSL certificate is not served.

Executing the command: openssl s_client -connect HOST:PORTNUMBER (where host, portnumber as the associated with my VPS SSD) returns this:

$openssl s_client -connect $HOST:$PORTNUMBER


40B7C763937F0000:error:0A00010B:SSL routines:ssl3_get_record:wrong version number:../ssl/record/ssl3_record.c:354:

no peer certificate available

No client certificate CA names sent

SSL handshake has read 5 bytes and written 322 bytes

Verification: OK

New, (NONE), Cipher is (NONE)

Secure Renegotiation IS NOT supported

Compression: NONE

Expansion: NONE

No ALPN negotiated

Early data was not sent

Verify return code: 0 (ok)

I get the feeling that there is no SSL certificate there, can you verify and provide guidance on how I can connect?

Thank you

Role: Zákazník
MK172973 Odpověděl na otázku 25. 6. 2022
MB313456 12.87K - WEDOS Internet, a.s. 0 Comments


first, please try a different VNC client, as ssVNC might be having issues with our system. Try:

Role: Podpora
MB313456 Odpověděl na otázku 25. 6. 2022


TigerVNC also fails, with this result:

TigerVNC Viewer 64-bit v1.12.0

Built on: 2022-03-25 17:06

Copyright (C) 1999-2021 TigerVNC Team and many others (see README.rst)

See for information on TigerVNC.

Sat Jun 25 10:47:59 2022

DecodeManager: Detected 4 CPU core(s)

DecodeManager: Creating 4 decoder thread(s)

CConn: Connected to host port xxxxx

Sat Jun 25 10:48:00 2022

CConnection: Server supports RFB protocol version 3.8

CConnection: Using RFB protocol version 3.8

CConnection: Choosing security type VeNCrypt(19)

CVeNCrypt: Choosing security type X509Vnc (261)

TLS: Could not load user specified certificate authority

TLS: Could not load user specified certificate revocation list

Sat Jun 25 10:48:19 2022

CConn: Authentication failure: The server certificate uses an insecure algorithm

Role: Zákazník
MB313456 Změnil status na publikováno 25. 6. 2022