TOTP and SSLVPN users are getting the error: ''User is not authorized''

After introducing TOTP code getting the error ''User XXXX is not authorized''

Root cause of this issue is that system time on both devices are off by over a minute. Since TOTP code is generated based on time, any inaccuracy in system time could cause code mismatch. Please check if their system time is accurate.

Resolution for SonicOS 7.X

This release includes significant user interface changes and many new features that are different from the SonicOS 6.5 and earlier firmware. The below resolution is for customers using SonicOS 7.X firmware.

1.- To discard any issue on TOTP and SSLVPN users setting, please check bellow link. 

https://www.sonicwall.com/support/knowledge-base/how-do-i-configure-2fa-for-ssl-vpn-with-totp/190829123329169/

2.- Force a new NTP synchronization.

2.1.  Navigate to Device|Settings|Time.

2.2.   Under Set Time, enable or disable/enable Set time automatically using NTP and ACCEPT .