Windows to Windows connection failing over Proxy

VirtualHere Server running on Windows 11 over ZScaler proxy. 

VirtualHere Client running on Windows 11 over ZScaler proxy. 

Specified USB Server 165.xxx.xx.xxx

Server Logs:

2024-05-16 15:20:18 INFO :Listening on all network interfaces at TCP port 7575 (IPv6 dual-stack) 

2024-05-16 15:20:21 INFO :Found High speed device [5986:2130] "SunplusIT Inc, Integrated Camera" at address 2 

2024-05-16 15:20:21 INFO :Found Full speed device [8087:0026] "0x8087, 0x0026" at address 3 

2024-05-16 15:20:21 INFO :Found Full speed device [06cb:00bd] "0x06cb, 0x00bd" at address 4 

2024-05-16 15:20:21 INFO :Found Full speed device [0529:0620] "SafeNet, Token JC" at address 6 

2024-05-16 15:43:53 INFO :Found Full speed device [1050:0406] "Yubico, YubiKey FIDO+CCID" at address 7

Client Logs:

2024-05-17 12:31:15 INFO  :VirtualHere Client 5.6.2 starting (Compiled: May  9 2024 08:55:33)
2024-05-17 12:31:15 INFO  :Client OS is Windows 11 (build 22631), 64-bit edition
2024-05-17 12:31:15 INFO  :Using config at C:\Users\AdilIqbal\AppData\Roaming\vhui.ini
2024-05-17 12:31:15 INFO  :IPC available at \\.\pipe\vhclient
2024-05-17 12:31:15 INFO  :Auto-find (Bonjour) on
2024-05-17 12:31:15 INFO  :Auto-find (Bonjour SSL) on
2024-05-17 12:31:16 INFO  :Connection 2 receiving msg size didnt complete due to error 10054, 
2024-05-17 12:31:22 INFO  :Could not connect to 10.20.110.7:7575
2024-05-17 12:31:25 INFO  :Server ping timeout, shutting down connection 2...
2024-05-17 12:31:45 INFO  :Connection 3 receiving msg size didnt complete due to error 10054, 
2024-05-17 12:31:52 INFO  :Could not connect to 10.20.110.7:7575
2024-05-17 12:31:57 INFO  :Server ping timeout, shutting down connection 3...
2024-05-17 12:32:15 INFO  :Connection 5 receiving msg size didnt complete due to error 10054, 
2024-05-17 12:32:22 INFO  :Could not connect to 10.20.110.7:7575
2024-05-17 12:32:28 INFO  :Server ping timeout, shutting down connection 5...

Is there anything else that I can try?

#2

C:\Windows\System32>netsh firewall show state

Firewall status:
-------------------------------------------------------------------
Profile                           = Standard
Operational mode                  = Enable
Exception mode                    = Enable
Multicast/broadcast response mode = Enable
Notification mode                 = Enable
Group policy version              = Windows Defender Firewall
Remote admin mode                 = Disable

Ports currently open on all network interfaces:
Port   Protocol  Version  Program
-------------------------------------------------------------------
7575   TCP       Any      (null)


Problem is still persisting

#3

ZScaler is an HTTP proxy and not a TCP proxy. That is why it doesnt work. VirtualHere uses normal TCP packets.

 

#4

Switched proxies. It's working like a charm! Thanks Michael!