PROBLEM
When using the Chrome browser to sign in to an ArcGIS portal, the sign in section does not display, appearing instead as a broken web element.
Note: To verify if this is the issue, open the Developer tools of Chrome (F12) to inspect the console. In the Console tab, there should be an error explaining that the section of the interface cannot be displayed due to X-Frame-Options.
This issue occurs when the value of the X-Frame-Options header is set to SAMEORIGIN on the Web Adaptor.
ALLOW-FROM https://portal.domain/webadaptor
Article ID: 000019542
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