ERROR_IPSEC_DOSP_STATE_LOOKUP_FAILED - 13928 (0x3668)
IPsec DoS Protection failed to look up state.
Updated: Feb 21, 2026
Technical Meaning
This error code indicates a failure in the IPsec DoS Protection subsystem to locate or retrieve an existing state entry. The IPsec DoS Protection mechanism is designed to prevent denial-of-service attacks by monitoring and managing security associations (SAs) and their states.
Error Details
The specific operation that failed was a lookup of an existing state, which could be related to establishing or maintaining a secure connection. This error suggests that the system encountered issues while attempting to retrieve necessary information from its internal state database.
Usage Context
This error can occur in various scenarios where IPsec DoS Protection is active and engaged in managing security associations for network traffic. It may be triggered by attempts to establish new connections, renew existing ones, or perform other operations that require state lookups.
Developer Interpretation
Developers should interpret this error as an indication of a failure within the IPsec DoS Protection subsystem. The error suggests that the system was unable to find or retrieve the required state information, which could impact the ability to properly manage security associations and protect against potential DoS attacks.
Related Errors
- ERROR_IPSEC_DOSP_STATE_UPDATE_FAILED (13927, 0x3667)
- ERROR_IPSEC_DOSP_MAX_CONNECTIONS_REACHED (13935, 0x3683)
- ERROR_IPSEC_DOSP_MAX_DATA_IN_SESSION_REACHED (13934, 0x3682)
FAQ
Q: What does this error mean?
A: This error indicates a failure in the IPsec DoS Protection subsystem to look up an existing state entry.
Q: How can I troubleshoot this issue?
A: Reviewing the operation context, validating parameters, and confirming object types are recommended steps for troubleshooting. Ensure that all necessary security associations are properly established and maintained.
Summary
The ERROR_IPSEC_DOSP_STATE_LOOKUP_FAILED error code is a specific technical indicator of a failure in the IPsec DoS Protection subsystem to locate or retrieve state information. Developers should address this issue by ensuring proper configuration and maintenance of security associations.