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app only authentication

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App-only authentication is a critical topic for Exchange Online administrators migrating away from legacy -Credential parameters in PowerShell. The tag covers Microsoft's deprecation of Resource Owner Password Credentials (ROPC) style authentication, which cannot meet modern Multi-Factor Authentication (MFA) and Conditional Access requirements. Content focuses on the technical facts needed to plan and execute a safe migration, including alternatives for app-only authentication in Exchange Online PowerShell modules after June 2026. Administrators must treat this change as urgent to maintain secure, compliant access to Exchange Online management.
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    Migration Guide: Deprecation of -Credential in Exchange Online PowerShell

    Microsoft’s Exchange Online team is deprecating the long-standing -Credential parameter in Exchange Online PowerShell — a change that administrators must treat as urgent rather than optional. The company’s guidance (and the wider MFA/ROPC narrative) makes clear that the legacy Resource Owner...
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    • app only authentication exchange online mfa powershell
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    • Forum: Windows News
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