What Do I Do If I Cannot Enable 2FA?

Symptoms

• In the 2FA list, there are no servers with disabled 2FA.
• After 2FA is enabled, it does not take effect.
• Failed to enable 2FA.

Possible Causes

• Server protection is not enabled.
• 2FA settings have not taken effect. After 2FA is enabled, it takes about 5 minutes for the settings to take effect.
• For a Linux server, Key pair is selected as the login mode.
• The SELinux firewall is not disabled.

Solution

1. Check whether HSS has been enabled for the server for which you want to use 2FA.
   • If it has, go to 2.
   • If it has not, enable HSS first.

2. Check whether it has been 5 minutes since you enabled 2FA.
   • If it has, go to 3.
   • If it has not, wait for 5 minutes and check whether 2FA takes effect.

3. Check whether your server is a Linux server with Key pair selected as its login mode.
   • If it is, disable the Key pair login mode and enable the Password login mode.
   • If it is not, go to 4.

4. Check whether the SELinux firewall is disabled on your server.
   • If it is, go to 5.
   • If it is not, run either of the following commands to disable it.
     • To temporarily disable the SELinux firewall, run the following command:

       setenforce 0 #Temporarily disable

     • To permanently disable the SELinux firewall, run the following command:

       vi /etc/selinux config

       selinux=disabled #Permanently disable

5. Contact technical support.