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Bug

Using a service from a federated ArcGIS Enterprise Portal/ArcGIS Server in a web map connected to the ArcGIS Experience Builder Map widget in ArcGIS Online will throw a 'Access to fetch at '<service url>' from origin 'https://experience.arcgis.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource' Console error.

ArcGIS Experience Builder
Bug ID Number BUG-000178224
SubmittedJuly 25, 2025
Last ModifiedOctober 27, 2025
Applies toArcGIS Experience Builder
Version foundJune 2025
Operating SystemWindows OS
Operating System Version11.0 64 bit
Version FixedPlanned Release Date: Q4 2025
StatusFixed

Steps to Reproduce

Bug ID: BUG-000178224

Software:

  • ArcGIS Experience Builder

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