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Intune Company Portal Sign-In or Sync Failure

Estimated time

15-30 min

Editorial Intro (SEO-Aligned)

This troubleshooting guide is aligned to the exact query "the trust relationship between this workstation and the primary domain failed" and focuses on enterprise-safe remediation for Intune Company Portal.

Severity: MediumAdmin RequiredEnv: BothMicrosoft • Intune Company Portal

Author & Verification

Tamem J

IT Solutions Engineer

Last verified: March 3, 2026

Runbooks and troubleshooting guides are reviewed for enterprise-safe usage and avoid security bypass patterns.

Tested on Windows 11 23H2Tested on macOS Sequoia 15

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  • • Enterprise Microsoft 365 Administration
  • • Endpoint Management (Intune, Jamf, Kandji)
  • • Identity & Access (Entra ID, Okta)

Symptoms of the trust relationship between this workstation and the primary domain failed

  • Company Portal opens but cannot sign in with corporate account.
  • Device sync requests fail or spin indefinitely.
  • User cannot complete required compliance actions.

Likely Causes of the trust relationship between this workstation and the primary domain failed

  • Token/session mismatch after password, MFA, or policy change.
  • Device registration state drift between local endpoint and Entra ID.
  • Network/proxy inspection interrupts required sign-in endpoints.

Interactive Decision Tree

ITIL-style triage path powered by state machine logic.

How to Fix: the trust relationship between this workstation and the primary domain failed

Accordion runbook sections

  1. 1

    Confirm scope, user impact, and reproduction

    Info
    v

    Document whether the issue affects one user, multiple users, or multiple devices. Confirm exact error messages, recent changes (password reset, update, network change), and whether the same issue reproduces in web vs desktop workflows where applicable.

  2. 2

    Validate prerequisites and application/session state

    Info
    v

    Confirm the user is signed in with the correct corporate account, system time is accurate, network/VPN connectivity is stable, and the application is not running in offline or limited mode.

  3. 3

    Run safe diagnostics from the Commands section

    Command
    v

    Use the command snippets below to collect non-destructive diagnostics. Capture output in the ticket when escalation may be required. Avoid deleting profiles, cached credentials, or managed app data unless the runbook or admin approval explicitly allows it.

  4. 4

    Apply safe remediation steps

    Info
    v
    • Confirm account can sign in to portal.office.com and My Apps with the same identity.
    • Validate device date/time and network path to Microsoft identity endpoints.
    • Re-run sync from Company Portal and capture exact error code/message.
    • Coordinate with identity and endpoint teams before clearing app/work profile state.
  5. 5

    Escalate when access, policy, or security controls are involved

    WarningAdmin required
    v
    • Issue affects many users after Conditional Access or MFA policy change.
    • Company Portal fails on both corporate network and trusted off-network.
    • Enrollment reset is required for production-critical devices.

Commands

Copyable diagnostic or remediation commands (1 snippet).

Validate Company Portal app presence and registration context

CLI

# Windows (PowerShell)
Get-AppxPackage *CompanyPortal* | Select-Object Name, Version, Status
dsregcmd /status

# macOS (Terminal)
mdls -name kMDItemVersion "/Applications/Company Portal.app" 2>/dev/null || echo "Company Portal app not found"

When to Contact IT / Security

  • Issue affects many users after Conditional Access or MFA policy change.
  • Company Portal fails on both corporate network and trusted off-network.
  • Enrollment reset is required for production-critical devices.

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