Have you ever struggled with Lenovo T480 or HP Elitedesk 800 G4 devices that refused to cooperate with Intune? In this blog, we unravel the saga of SecureChannelFailure errors, elusive SSL/TLS handshake issues, and a troublesome TPM. Armed with Fiddler and Wireshark, we uncovered a cryptographic glitch causing the chaos. The result? Apps wouldn’t install, and no PowerShell scripts could be deployed during Windows Autopilot.