windows-itpro-docs/windows/keep-secure/audit-mpssvc-rule-level-policy-change.md

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Audit MPSSVC Rule-Level Policy Change (Windows 10)	This topic for the IT professional describes the Advanced Security Audit policy setting, Audit MPSSVC Rule-Level Policy Change, which determines whether the operating system generates audit events when changes are made to policy rules for the Microsoft Protection Service (MPSSVC.exe).	263461b3-c61c-4ec3-9dee-851164845019	w10	deploy	library	security	brianlic-msft

Audit MPSSVC Rule-Level Policy Change

Applies to

• Windows 10

This topic for the IT professional describes the Advanced Security Audit policy setting, Audit MPSSVC Rule-Level Policy Change, which determines whether the operating system generates audit events when changes are made to policy rules for the Microsoft Protection Service (MPSSVC.exe).

The Microsoft Protection Service, which is used by Windows Firewall, is an integral part of the computer’s threat protection against malware. The tracked activities include:

• Active policies when the Windows Firewall service starts.
• Changes to Windows Firewall rules.
• Changes to the Windows Firewall exception list.
• Changes to Windows Firewall settings.
• Rules ignored or not applied by the Windows Firewall service.
• Changes to Windows Firewall Group Policy settings.

Changes to firewall rules are important for understanding the security state of the computer and how well it is protected against network attacks.

Event volume: Low

Default: Not configured

Event ID	Event message
4944	The following policy was active when the Windows Firewall started.
4945	A rule was listed when the Windows Firewall started.
4946	A change has been made to Windows Firewall exception list. A rule was added.
4947	A change has been made to Windows Firewall exception list. A rule was modified.
4948	A change has been made to Windows Firewall exception list. A rule was deleted.
4949	Windows Firewall settings were restored to the default values.
4950	A Windows Firewall setting has changed.
4951	A rule has been ignored because its major version number was not recognized by Windows Firewall.
4952	Parts of a rule have been ignored because its minor version number was not recognized by Windows Firewall. The other parts of the rule will be enforced.
4953	A rule has been ignored by Windows Firewall because it could not parse the rule.
4954	Windows Firewall Group Policy settings have changed. The new settings have been applied.
4956	Windows Firewall has changed the active profile.
4957	Windows Firewall did not apply the following rule:
4958	Windows Firewall did not apply the following rule because the rule referred to items not configured on this computer:

Related topics

• Advanced security audit policy settings