Refer to Multi-Factor App Enrollment (URL) Realm Configuration Guide to enroll devices via URL login workflow
To change the length of time a QR code is available for scanning by a user
1. Go to the System Info tab, and in the Links section, Click to edit Web Config file.
2. On the Web Config Editor page, add an entry in the web.config file to specify the new value (default is 10 minutes). For example:
<add key="QRDeviceEnrollmentValidityThreshold" value="10" />
NOTE: We recommend to set this to the same value as the session timeout.
3. Save settings.