No connection could be made because the target machine actively refused it.

[probosciger]

Hello. I use v2rayN 6.55 with default settings. I connected to VLESS server and I use TUN mode only (system proxy disabled). As route rule I use default Blacklist rule (0-65535 ports direct).
I have trouble when I use my primary work application (ARCHICAD). When I initialize a network connection in the ARCHICAD, this ends with an error.
In v2RayN logs I see error:

+0300 2024-09-03 18:29:19 ERROR [756209055 2.2s] inbound/tun[tun-in]: dial tcp xxx.xx.xx.xxx:27000: connectex: No connection could be made because the target machine actively refused it.

(In place of the X's is my external (real) IP, which Archicad is accessing)
After I disable TUN, ARCHICAD starts working and connections are established.
When I use Whitelist as main active routing rule everything works fine.
But I need to use Blacklist as the main routing rule, with TUN mode, but unfortunately ARCHICAD can not establish network connections to the Internet
I tried to disable Windows Filewall, but it didn't help.
I also tried:
-Change Core type (I tried all available ones)
-In the TUN mode settings change Stack option, Mtu, Enable additional inbound
-Add rule with Direct outBound tag for 27000 port (used by ARCHICAD)
-Add rule with direct outBound tag for application archicad.exe
-Enable Route Only option (in the basic settings)

Please help to solve the issue

[2dust]

Routing rules are preset for mainland China users.
Please create your own routing rules

[probosciger]

I created my own routing rule set. It consists of two rules
First rule: chrome browser (chrome.exe) via proxy
Second rule: 0-65535 ports direct
TUN mode enabled. System proxy mode: Clear system proxy
The result is: Chrome work correctly (via proxy). All other applications work correctly (direct), BUT my primary application (ARCHICAD) cannot establish network connection. Error text bellow
+0300 2024-09-04 13:20:18 ERROR [629976530 2.2s] inbound/tun[tun-in]: dial tcp xxx.xx.xx.xxx:27000: connectex: No connection could be made because the target machine actively refused it.