captive portal external welcome page not working

[Gihan]

Hi all,
I configured two captive portals under one RF-domain but two wireless lans. Both server mode are configured as "Centralized" and web pages are externally hosted.
There is one DNS Whitelist is for both captive portals. First created captive portal is works correctly and no any issues.

Problem is, second captive portal external welcome page is not working. After go through the login page it should be come welcome page. it not come and error is "404 - Not Found".

External welcome page also define in DNS whitelist and connection mode is "HTTP".
How do I solve this problem?
Thank you.

[RobertZ]

Hi Gihan;
Without seeing your config its hard to tell but check out the below guides.

Best Practices and Recommendations.
WiNG 5 Captive Portal - Documentation
WiNG 5.X How-To Guide – Captive Portals

[Gihan]

Thanks Robert, Issue is still there, Finally I open a case on GTAC.