您的使用者帳戶原則不允許太頻繁的密碼變更。這個是為了防止使用者所變更的密碼與上一個太相似，有被破解的潛在危險。如果您覺得您的密碼已經被盜用，請連絡您的系統管理員立即指定一個新密碼給你。

The policy of your user account does not allow you to change passwords too frequently. This is done to prevent users from changing back to a familiar, but potentially discovered, password. If you feel your password has been compromised then please contact your administrator immediately to have a new one assigned.