IPSec Phase 2 Negotiation fails with "IKE protocol notification message received: received notify type NO_PROPOSAL_CHOSEN" - Authentication mismatch in Phase 2
![Pulse Secure Article: KB23221 - '13801: IKE authentication credentials are unacceptable' error message Pulse Secure Article: KB23221 - '13801: IKE authentication credentials are unacceptable' error message](https://www.pulsesecure.net/base/images/kb-images/library/CUSTOMERSERVICE/bk23221/bk23221-1.jpg)
Pulse Secure Article: KB23221 - '13801: IKE authentication credentials are unacceptable' error message
![Internet Key Exchange (IKE) and Security Association (SA) by Wentz Wu, CISSP/ISSMP/ISSAP/ISSEP,CCSP,CSSLP,CISM,PMP,CBAPWentz Wu Internet Key Exchange (IKE) and Security Association (SA) by Wentz Wu, CISSP/ISSMP/ISSAP/ISSEP,CCSP,CSSLP,CISM,PMP,CBAPWentz Wu](https://i0.wp.com/wentzwu.com/wp-content/uploads/2020/07/Top-Level-IPsec-Processing-Model_V2.jpg?ssl=1)