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ERROR_IPSEC_IKE_ADD_UPDATE_KEY_FAILED
ERROR_IPSEC_IKE_ADD_UPDATE_KEY_FAILED (0x00003624) IKE finished enough negotiation to create or update a Security Association, but the handoff to the IPsec driver failed. Windows notes that prolonged negotiation and high load can contribute, but policy and driver state must also be checked.
What to check
- Inspect IKEEXT and IPsec Policy Agent service events around the failure and verify both services are running.
- Check active Main Mode and Quick Mode SAs for repeated rekeying, excessive stale associations, or policy churn.
- If the error repeats under load, collect a trace before changing timeouts or weakening policy settings.
Get-NetIPsecMainModeSA; Get-NetIPsecQuickModeSA
Microsoft: Get-NetIPsecMainModeSA
Microsoft: Get-NetIPsecQuickModeSA
Microsoft: Netsh network tracing
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