Cross-Origin Resource Sharing (CORS) in windchill

[ArunPLM]

Hi, 

I am trying to configure another internal site's link into windchill's Quick Links.

I modified all codes, but CORS error came. To fix that I referred below articles. 

Article-1: 

https://support.ptc.com/help/wnc/r12.0.0.0/en/index.html#page/Windchill_Help_Center/FileVaultConfigWCforCORS.html

Article-2: 

https://www.ptc.com/en/support/article/CS318829

But the problem is,

1. I am not sure, where to add those lines referred in Article-1.

2. Even If I add somewhere in middle of the web.xml, windchill throws 404 error.

Can anyone guide me, where exactly I have to add the Article-1 lines in web.xml? 

[ArunPLM]

Hi,

Found out that web.xml should be added with all lines referred in Article-1.

But I face a different error which still has not getting fixed.

Error screenshot attached. Please guide me if you have some idea.