A BSS or a Storefront user will be locked and he will not able to login in BSS or Storefront portal if he exceeds the number of failed login attempts your administrator has defined.  

Defining the Maximum Login Attempts

The BSS administration can define after how failed attempts a user account will be locked in Setup > Administration > System Options > Organizational Profile page in Security settings section.

The default value of this field is 5 but the administrator can define any value between 3 and 25.

Unlocking a User

If a BSS user exceeds the maximum login attempts, he will receive the following message on the login page:

A similar message will also be displayed to the Storefront user if he fails to login into your Storefront.

A user can be unlocked only from a BSS administrator from the "Unlock Users" tool we have added in BSS setup area.

1. Navigate to BSS > Setup > Tools  and open the "unlock users" tool
   
   
   
2. Enter the username of the BSS or Storefront user you want to unlock and press "Run Tool. If the locked user is a Storefront user, you should also check the "Is Storefront User" option.
   
   
   
3. After running the tool, a section will be displayed containing
   1. The message "User unlocked successfully" if the user was found and has been unlocked
   2. The message: "User not found" if no user exists with the specified username.