Question
When attempting to log in with SSO to the Box mobile app on iOS or Android devices, even after pressing the Log in with Certificate button, the device certificate selection screen does not appear and an error message is displayed: "403 Login denied by the policy. Access is not allowed. No certificate selected."
When logging in with SSO to Box via a browser, or when logging in with SSO to other service apps, device certificate login works without any issues.
How can I log in to the Box mobile app using a device certificate?
Answer
To log in to the Box mobile app using a device certificate on iOS or Android devices,
the "Safari View Controller / Chrome Custom Tab Support" feature must be enabled on the Box side.
Additionally, to enable this feature, you need to apply to Box for its use.
Therefore, please contact Box to confirm whether the "Safari View Controller / Chrome Custom Tab Support" feature is enabled.
▽ Support for Safari View Controller and Chrome Custom Tabs
https://support.box.com/hc/en-us/articles/360043694534 (external link)
* For questions or instructions on enabling this feature, please contact Box.
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