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testnewtestnew 

Developer org not able to login because of two-factor authentication.

Hi All,
I am not able to login into my Trailhead Account.
1. I have logged in with correct Username and Password
2.Having domain as: https://olivalightninguv-dev-ed-dev-ed.my.salesforce.com/
3. After logging in next screen is displayed as below.
User-added image
4.I have deleted account from  "Salesforce Authenticator" mobile app by mistakenly.
5.But now i am trying to login into my account it's shows screen as above in snapshot. So, I need to disconnect "Salesforce Authenticator" from my Account. 

I have tryied 4 to 5 time raise request using below link
https://trailhead.salesforce.com/en/help?support=home
but still not able to raise it. 
Is any solution for this - Please let me know.
AbhishekAbhishek (Salesforce Developers) 
Hi,

Only one mobile authenticator app that generates verification codes (one-time passwords) can be connected to a user’s account at a time. If your user loses access to the app by replacing or losing the mobile device, disconnect the app from your user’s account. The next time your user logs in with two-factor authentication, Salesforce prompts the user to connect a new authenticator app.

1. From Setup, enter Users in the Quick Find box, then select Users.
2. Click the user’s name.
3. On the user’s detail page, click Disconnect next to the App Registration: One-Time Password Generator field.
Your users can disconnect the app from their own accounts. In personal settings, they go to the Advanced User Details page and click disconnect next to the App Registration: One-Time Password Generator field.


And If didn't resolve the issue can you give the case number raised to the Trailhead team.

I hope you find the above information is helpful. If it does, please mark as Best Answer to help others too.

Thanks.
 
testnewtestnew
Hi,
I have tried for case raise using https://trailhead.salesforce.com/en/help?support=home link. but not able to generate the case. So, I don't have case number. if you have other link for support team - can you please provide me.
testnewtestnew
After case raise it shows screen as below snapshot:
User-added image
after clicking on "Go To My cases" it shows as below snap.
User-added image
and then not created case number .. or not got any mail related to case created.


 
AbhishekAbhishek (Salesforce Developers) 
Thanks for the information as mentioned above you can connect a new authenticator app.

1. From Setup, enter Users in the Quick Find box, then select Users.
2. Click the user’s name.
3. On the user’s detail page, click Disconnect next to the App Registration: One-Time Password Generator field.

Your users can disconnect the app from their own accounts. In personal settings, they go to the Advanced User Details page and click disconnect next to the App Registration: One-Time Password Generator field.

Try this.
testnewtestnew
Thnaks Abhishek,

I have installed Authentication app in my mobile - after click on add account button it gives me two-word phrase then after what i need to do???? . and using this app i am not finding above three points that u have mention in above.

when i am trying to login in developer org it gives me two options:
1)Approve using Salesforce Authenticator
2)Use a code from an authenticator app 
Can you please tell me step by step.
AbhishekAbhishek (Salesforce Developers) 
Try this,

https://trailhead.salesforce.com/en/content/learn/modules/mobile_sdk_introduction/mobilesdk_intro_security

https://help.salesforce.com/articleView?id=connect_salesforce_authenticator_v2_or_later.htm&type=5

The above documents have step by step information.