If you use Chrome, you may be seeing errors using Banner after you are logged in as of November 2025. This is due to a change that Chrome made recently in their browser. The error may contain the message "Authentication Failed. Problem in external authentication service."
Example of issue:
To fix this issue:
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Open Chrome.
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Copy chrome://flags/#local-network-access-check into the browser address bar and hit Enter/Return.
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In the Local Network Access Checks dropdown, select Disabled.
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Relaunch the browser using the Relaunch button.