Windows error 13012 (ERROR_IPSEC_MM_AUTH_IN

Status / error code:		Category:

Constant name:
Source:	Operating System:
Description: The Main Mode authentication set is still in use.

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ERROR_IPSEC_MM_AUTH_NOT_FOUND	ERROR_IPSEC_DEFAULT_MM_POLICY_NOT_FOUND

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.

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-NetIPsecMainModeSA

Microsoft: Get-NetIPsecMainModeSA

Microsoft: Get-NetIPsecMainModeRule

Microsoft: IPsec/IKE system error codes

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