When creating or resetting your Office 365 email password the following are the requirements:
- The password must not contain the user's account name or parts of the user's full name that exceed two consecutive characters.
- The password must contain characters from at least three of the following character sets:
- Uppercase alphabetic character
- Lowercase alphabetic character
- Special characters (for example: !, #, $, %, ^, &, *)
- Password length must be at least 8 characters in length
For more information on the policy click here.