Windows error 13011 (ERROR_IPSEC_MM_AUTH_NOT

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The requested Main Mode authentication set was not found.

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ERROR_IPSEC_MM_AUTH_EXISTS	ERROR_IPSEC_MM_AUTH_IN_USE

ERROR_IPSEC_MM_AUTH_NOT_FOUND

ERROR_IPSEC_MM_AUTH_NOT_FOUND (0x000032D3) A policy-management operation tried to use an authentication list that is not present. The problem is usually a stale reference, a policy-store mismatch, or a GPO that has not applied yet.

What to check

Review the active connection-security and Main Mode rules to identify which authentication method is actually configured.
Verify Group Policy processing and confirm that the intended policy is linked and in scope for the computer.
If automation owns the configuration, reconcile policy state rather than assuming the missing object should be recreated blindly.

Get-NetIPsecMainModeRule

Microsoft: Get-NetIPsecMainModeRule

Microsoft: IKE authentication method types

Microsoft: IPsec/IKE system error codes

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