Telerik control css loading Issue

[Afroz khan]

Hello Team,

We are using telerik control for one of the product, application is  hosted at client end and some external users uses the application from their environment using some kind of VPN. recently one of the client's contractor reported the issue that application is not loading properly  ,where I find the telerik control CSS is not getting load only for certain user who are using the application through some kind of VPN.

Could you please help me out ,what can be the reason ,why CSS for telerik control is not getting load.

Note : Application is running on IE 9 and issue is appearing only for certain user