| Event Id | 2021 |
| Source | Microsoft-Windows-Windows Firewall with Advanced Security |
| Description | A phase 1 crypto set was modified in IPsec settings. %tSet ID:%t%1 %tSetName:%t%2 %tOrigin:%t%4 %tFlags:%t%6 %tNumSuites:%t%7 %tTimeOutMinutes:%t%10 %tTimeOutSessions:%t%11 %tModifyingUser:%t%12 %tModifyingApplication:%t%13 |
| Event Information | According to Microsoft : Cause : This event is logged when a phase 1 crypto set was modified in IPsec settings. Resolution : This is a normal condition. No further action is required. |
| Reference Links | Event ID 2021 from Microsoft-Windows-Windows Firewall with Advanced Security |
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