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Deep technical guidance on Cisco Security, zero trust, and the MoCy Platform — from the engineers who build and run it.

KB5127648 broke PEAP-MSCHAPv2 802.1X SSO on Windows 11 Wi-Fi and wired. Why it happened, the BlockNtlmv1SSO registry workaround, and how to migrate to EAP-TLS or TEAP on Cisco ISE.

October 2026 Windows Update Breaks PEAP 802.1X on Wi-Fi and Wired: Workaround Now, EAP-TLS Next

The October 13, 2026 Windows security update (KB5127648 on Windows 11 24H2, 25H2 and 26H2) silently flipped a default that PEAP-MSCHAPv2 ...

Limiting AI Agents on End-User PCs with Cisco ISE and TEAP

AI agents have officially moved off the whiteboard and onto the corporate endpoint. Copilots, desktop assistants, and increasingly ...

How to Check EAP Settings on Supplicants

When performing Cisco ISE certificate renewals or troubleshooting certificate-based authentication issues, checking client supplicant EAP ...

Cisco Identity Services (ISE) Posture

Cisco Identity Services Engine (ISE) is a versatile, identity-based Network Access Control and policy enforcement solution which offers ...

Using TEAP for more secure 802.1X authentication

As I am sure, most everyone reading this has heard that the use of simple passwords is no longer "secure". Additionally, the use of a ...