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ERROR_IPSEC_MM_AUTH_IN_USE
ERROR_IPSEC_MM_AUTH_IN_USE (0x000032D4) The authentication configuration is referenced by an existing policy or active security association, so it cannot be removed safely at that moment.
Find the policies and active associations that reference the authentication object before deleting it. Move those references to the replacement configuration and allow active state to drain so removal does not interrupt protected connections.
What to check
- Identify the dependent IPsec rules and live Main Mode security associations.
- Change or remove the dependent policy first through its managed source, then retry the authentication-set operation.
- Avoid forcing removal during an active VPN or connection-security rollout because peers may lose authentication unexpectedly.
Get-NetIPsecMainModeSAMicrosoft: Get-NetIPsecMainModeSA
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