Hi Oscar,
For our controls to work, all requests must return successfully. There is no built-in way of using proxies, especially for WebResource requests. Generally, the webresource requests should be excluded from the proxy configuration if possible.
In your case, what I can suggest is using the CDNs (for scripts, for skins and the built-in MS AJAX CDN) as much as possible to reduce the number of webresoruce requests to the absolute minimum. Note that some controls require webresources for other purposes - dialogs, spell checking, file upload and this cannot be avoided, so such features will not work for your setup.
Regards,
Marin Bratanov
Telerik
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Explore the
Telerik Feedback Portal
and vote to affect the priority of the items