When using VPN, Creo cannot connect to the corresponding license. It prompts 7788@xxxx (-9) Invalid

[XZ_10393809]

I am using Creo Parametric Release 4.0 and DatecodeM130

使用VPN时，Creo无法连接对应的License.提示7788@xxxx （-9）Invalid host.(license服务器所在电脑已开放7788端口)

Here are the errors that I faced
提示7788@xxxx （-9）Invalid host

When using VPN, Creo cannot connect to the corresponding license. It prompts 7788@xxxx (-9) Invalid host. (The computer where the license server is located has opened port 7788)

Here are the errors that I faced
Prompt 7788@xxxx (-9) Invalid host

Translated by Iuliana Lazar with Google Translate on 17 Oct 2022

[VladimirN · Accepted solution]

 Hi,

1. Article - "How to access Flexnet based PTC products via VPN": https://www.ptc.com/en/support/article/CS119513 

2. Discussion - "VPN Issue": https://community.ptc.com/t5/System-Administration/VPN-Issue/td-p/422133