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| ERROR_IPSEC_IKE_MM_DELAY_DROP | ERROR_IPSEC_IKE_ERROR |
ERROR_IPSEC_IKE_QM_DELAY_DROP
ERROR_IPSEC_IKE_QM_DELAY_DROP means the Quick Mode phase took too long after peer authentication. The likely area is traffic selectors, IPsec proposals, policy evaluation, or a peer that does not complete the child-SA exchange.
What to check
- Confirm that Main Mode has already established an SA, then inspect Quick Mode events.
- Compare local and remote traffic selectors, transform proposals and lifetimes.
- Use a trace to determine whether a specific Quick Mode message is retransmitted or ignored.
Microsoft: Audit IPsec Quick Mode
Microsoft: Get-NetIPsecQuickModeSA
Microsoft: Use Netsh to manage network traces
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