When Password Complexity is enabled in the Admin Area from the Registration Settings page passwords need to have the following;
- Meet the minimum password length as set in the Registration Settings page
- Have an Upper Case Character
- Have a Lowe Case Character
- Have a Number
- Have a Non-Alphanumeric Symbol
The following regular expression is used to test the password meets these requirements;
"^.*(?=.{" & intMinPasswordLength & ",})(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[\W]).*$" |
Make sure that your password meets the minimum length. Also try using a different password as maybe the Non-Alphanumeric Symbol that you are using is recognised by the regular expression as being a Non-Alphanumeric Symbol.
I tested updating the admin password in the admin area by changing it to 'Letmein1$' and the password was excepted as meeting the password complexity requirements.