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Published 20 hours ago • verified publisher icon xcp-ng

[BUG] cannot connect from XCP-ng Center v25.04 Build 25119 to XCP-ng release 8.3.0

Open gudge25 opened this issue 1 month ago • 2 comments

Error message “Unable to connect to the server {server IP address}. Could not create secure SSL/TLS channel"

gudge25 avatar Oct 20 '25 11:10 gudge25

Image

gudge25 avatar Oct 20 '25 11:10 gudge25

clean install

gudge25 avatar Oct 20 '25 12:10 gudge25

I cannot reproduce this issue with a clean install of XCP-ng Center Build 25119 on windows 11 LTSC and XCP-ng 8.3.0. Could you try direct connecting these devices to remove firewall/networking issues? Can you provide a wireshark capture?

ISJ-439 avatar Nov 11 '25 00:11 ISJ-439

Problem identified I tried to connect from windows server 2012 r2 and as we found out it has no needed ciphers which are limited by Xcp . So after extending ciphers on xcp ng site it starts to work again

gudge25 avatar Nov 11 '25 05:11 gudge25

Thanks for the info it may help someone else.

Similar to the Windows 7 TLS 1.3 issues we should mark this as solved as windows 2012 is EOL and would be unsupported.

ISJ-439 avatar Nov 11 '25 17:11 ISJ-439