Forum Discussion
Compliance Policies - Device Health Attestation failing (Syncml 404 / 0x87d10194)
Windows 11 devices are non compliant in Intune against BitLocker, Secure Boot and Code Integrity, all three returning the Syncml 404 error. The settings are genuinely enabled. The real cause is the d...
Same issue on multiple new Dell devices:-
Running:-
psexec.exe -i -s powershell.exe
$dha = Get-CimInstance -Namespace root\cimv2\mdm\dmmap -ClassName MDM_HealthAttestation
Invoke-CimMethod -InputObject $dha -MethodName VerifyHealthMethod
then running this:-
Get-CimInstance -Namespace root\cimv2\mdm\dmmap -ClassName MDM_HealthAttestation | Select Certificate,CorrelationID,Status,CurrentProtocolVersion
should return the cert it wasnt working, I was getting was status code 65535.
Massive thanks Durrante
link windows-11/2026/07/july-28-2026-kb5101684-preview
resolved this for me