Point of clarification: The password is a minimum of 15 characters (not specifically 15 characters). It must be a strong password with at least 1 Upper case letter, 1 lower case letter, 1 number, and one of the special characters that you typically use in your production password.
When: January 1, 2018
What: The password requirements for the Practice Lab will require users to have a strong password with a minimum of 15 characters.
How does this impact existing Users? Existing users whose current password does NOT meet the new requirement will be prompted to change their password to a strong password with a minimum of 15 characters the first time they login to the Practice Lab beginning January 1, 2018
How does this impact new users? New users creating accounts beginning January 1, 2018 will be required to enter a strong password with a minimum of 15 characters.
Does this impact my production username and password? No. The requirements for your production passwords will not change because you are required to authenticate via Multi-Factor Authentication (MFA).
blog posted 12/14/2017