Support the ArcGIS Portal proxy

Berend Veldkamp

June 26, 2026 13:10 Edited

When viewing a map in the Portal map viewer, requests to certain layers are automatically proxied by ArcGIS, e.g. a WMS goes through https://example.com/portal/sharing/proxy?https://external.com/path/WMS?service=WMS&request=…  I think that in Experience Builder, the proxy is also used automatically if necessary

In the Web Viewer module, no proxy is used, resulting in inaccessible layers due to CORS errors.

Could this proxy functionality be added to the viewer?

 

UPDATE Oh well, I found out how to use proxyRules minutes after I posted :-(

 

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  Nico Burgerhart

  June 27, 2026 14:02

  Can the use of proxyRules be added to the documentation and/or explained in an article on the Support site?

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