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Support Article

Blocked a frame from accessing a cross-origin frame



User cannot open data flow or strategy results in Designer Studio, but only using Chrome browser.

The rule header appears, but greyed out, and the rule contents never render. The console shows a cross-origin error.

Attempts to determine a solution also at times showed a Chrome-Extension error.

Error Messages

Not applicable

Steps to Reproduce

Try to open a data flow or strategy rule.

Root Cause

A defect or configuration issue in the operating environment .

A "Chrome Extension" error appearing some times in the Developer Console led to the discovery that AdGuard Adblocker 2.5.11 was the cause of the issue.


Make the following change to the operating environment:

​Remove the AdGuard extension.

Published July 10, 2017 - Updated October 8, 2020

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