[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-04 (世界標準時間)。"],[],[],null,["# About fine-grained password policies\n\nThis page explains the fine-grained password policies (FGPP) concepts and\nrelated best practices for Managed Service for Microsoft Active Directory.\n\nOverview\n--------\n\nYou can use\n[FGPP](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc770394(v=ws.10))\nto define and enforce strong password settings on a specific Active Directory\nuser or group. Note that password policies are different from the default domain\npassword policy which is configured by a group policy and linked to the root of\nthe domain.\n\nFGPP is set in Password Settings Objects (PSO). Each PSO has a precedence\nvalue that indicates its priority. The lower this value, the higher the priority\nof that PSO. Managed Microsoft AD creates ten PSOs with default settings. You\ncannot change the names or precedences of these PSOs, but you can change the\nsettings. For more information about the pre-created PSOs, see [Password\nSettings Objects](/managed-microsoft-ad/docs/objects#password_settings_objects).\n\n### Policy settings\n\nEach PSO can contain the following policy settings:\n\n- [Complexity enabled](https://docs.microsoft.com/en-us/windows/security/threat-protection/security-policy-settings/password-must-meet-complexity-requirements)\n\n- [Lockout duration](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/hh994569(v=ws.10))\n\n- [Lockout observation window](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/hh994568(v=ws.10))\n\n- [Lockout threshold](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/hh994574(v=ws.10))\n\n- [Maximum password age](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/hh994573(v=ws.10))\n\n- [Minimum password length](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/hh994560(v=ws.10))\n\n- [Password history count](https://docs.microsoft.com/en-us/windows/security/threat-protection/security-policy-settings/enforce-password-history)\n\n- [Reversible encryption enabled](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/hh994559(v=ws.10))\n\nWhat's next\n-----------\n\n- [Configure fine-grained password policies](/managed-microsoft-ad/docs/how-to-use-fgpp)"]]
