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| ERROR_IPSEC_IKE_MM_ACQUIRE_DROP | ERROR_IPSEC_IKE_QUEUE_DROP_MM |
ERROR_IPSEC_IKE_QM_ACQUIRE_DROP
ERROR_IPSEC_IKE_QM_ACQUIRE_DROP means the request to create the traffic-protection SA waited too long after the authenticated channel phase. This points to a delayed or overloaded Quick Mode negotiation, not necessarily a credential problem.
What to check
- Check whether Main Mode succeeds but Quick Mode never establishes an SA.
- Compare traffic selectors, IPsec transform sets and lifetimes on both peers.
- Look for many concurrent traffic-triggered negotiations or repeated Quick Mode retries.
Get-NetIPsecMainModeSA
Get-NetIPsecQuickModeSA
Microsoft: Get-NetIPsecQuickModeSA
Microsoft: Audit IPsec Quick Mode
Microsoft: IPsec IKE system error codes
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