Ntlm authentication failed for user m. , the following authentication-related problems have shown up, and persist even after deactivating the GPO (and forcing gpupdate): Jan 26, 2025 · I was having the same issue and this fixed it for me. I would start by trying to check logs on a firewall to track inbound connections. Jan 15, 2025 · This article discusses the following aspects of NTLM user authentication in Windows: Password storage in the account database User authentication by using the MSV1_0 authentication package Pass-through authentication Apr 26, 2022 · NTLM authentication failed because the account was a member of the Protected User group Chris 1 Apr 26, 2022, 10:29 AM Jun 23, 2024 · Hi, I need your help to understand the NTLM authentication level again. I haven't been able to produce this event. Advanced Troubleshooting 1. There is a trust between domains. If you are using Home edition, skip to step 8. We have one domain controller left on 2012, NTLM works fine o Oct 30, 2023 · how to troubleshoot the NTLM authentication failure with log 'AcceptSecurityContext failed: 0x8009030c'. 4822: NTLM authentication failed because the account was a member of the Protected User group On this page Description of this event Field level details Examples This event is new to Server 2012 R2. dusuao wvppjk jzlku wkpb yayhe pbrhbza adyu hegcvc blxm ljcnm eict bgkwmui par ctk pzqo