Two-step authentication in Bitrix24 is linked to a specific mobile device, where a one-time login code is generated. If you decide to change your device or have lost your phone, set up two-step authentication again.
How to reset two-step authentication when you change your phone
To connect a new phone,
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Go to the profile page and click the Security button.
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Click My mobile device has changed and set up two-step authentication again for the new mobile.
Enable two-step authentication for Bitrix24 login
For security reasons, we recommend you enable the Mandatory for all users option in the account settings. In this case, only the administrator will be able to disable the OTP. If the option is disabled, any employee can disable the OTP.
What to do if an employee's mobile is lost
If an employee cannot log in to the account, you should temporarily disable two-step authentication for them. Only the Bitrix24 administrator can disable it.
After that, the employee will be able to log in to the Bitrix24 account and reconfigure the OTP.
What to do if the administrator cannot log into Bitrix24 account
If there are several administrators on the account, one of them should temporarily disable the two-step authentication for the colleague. Thus, this person will be able to log in and reset OTP.