@petr-bena I tried to run the 24158 build on windows 10, everything really works, thank you. The problem is with the outdated windows 2008 server R2 operating system.
P.S. I've never had it work on this machine with xp-ng 8.3, I thought the reason was the latest patch.

@petr-bena it's definitely not a firewall, XO is working. Maybe the problem is in windows 2008 server r2, I run xencenter on it. Perhaps it does not support any new encryption protocols, this is an assumption.

@petr-bena thank you, I see that the build is different, I downloaded my version from your resource:
https://cloud.bena.rocks/s/kEWmsmg8ABtQJZe
please tell me, where can I get a newer build?

@petr-bena Have you installed the latest patch via yum update?

[epyc-genoa1 ~]# rpm -qa | grep xapi
xapi-xe-24.19.2-1.4.xcpng8.3.x86_64
xapi-rrd2csv-24.19.2-1.4.xcpng8.3.x86_64
python2-xapi-storage-24.19.2-1.4.xcpng8.3.x86_64
xapi-storage-script-24.19.2-1.4.xcpng8.3.x86_64
xapi-nbd-24.19.2-1.4.xcpng8.3.x86_64
xapi-core-24.19.2-1.4.xcpng8.3.x86_64
xapi-tests-24.19.2-1.4.xcpng8.3.x86_64
xcp-ng-xapi-plugins-1.10.1-1.xcpng8.3.noarch

XO is working properly.

@petr-bena Greetings. Your build has stopped working with the latest xcp-ng 8.3 patches. Is there any solution?