I am having problem while loading the CSS file through App_Themes folder but with ASP.NET authentication doesnâ€™t work. The solutions are two. First itâ€™s insert in web.config this tag:
<configuration> <location path="App_Themes/YourThemeFolder"> <system.web> <authorization> <allow users="*"/> </authorization> </system.web> </location> </configuration>
The second solution (that itâ€™s always working) is changing tag page on web.config.
<pages styleSheetTheme="YourThemeName"> </pages>