Issue with running WordPress php file for inserting new posts on Blog from client application

Hello,
I have issue with running WordPress php file for inserting new posts on Blog from client application.
I can run my custom php file from web browser and it works (it is inserting new posts on blog after triggering from browser)
BUT
when I try to the same from C# client application from my computer I am getting this message and nothing happens on Blog (no new posts there)
Message is:
This site requires Javascript to work, please enable Javascript in your browser or use a browser with Javascript support

>Hello,

I have issue with running WordPress php file for inserting new posts on Blog from client application.
I can run my custom php file from web browser and it works (it is inserting new posts on blog after triggering from browser)
BUT
when I try to the same from C# client application from my computer I am getting this message and nothing happens on Blog (no new posts there)
Message is:
This site requires Javascript to work, please enable Javascript in your browser or use a browser with Javascript support

Please search the forum for related topics before created one. Here is the similar topic:
Recent Discussions — Profreehost Community