Hello,
Thank you for posting in the Microsoft Community Forums.
It sounds like you're having trouble resetting your office account password due to your company's password policy.
Make sure you understand the specific requirements for your corporate password policy. This usually includes:
Minimum and maximum length (e.g., 8-16 characters)
Use of uppercase and lowercase letters
Inclusion of numbers and special characters
Avoiding previously used passwords
For more details you can refer to: Password Policy - Windows 10 | Microsoft Learn
I hope the information above is helpful.
Best regards
Yanhong Liu