𝐌𝐢𝐜𝐫𝐨𝐬𝐨𝐟𝐭 𝐡𝐚𝐬 𝐩𝐨𝐬𝐭𝐩𝐨𝐧𝐞𝐝 𝐭𝐡𝐞 𝐫𝐞𝐭𝐢𝐫𝐞𝐦𝐞𝐧𝐭 𝐨𝐟 𝐭𝐡𝐞 -𝐂𝐫𝐞𝐝𝐞𝐧𝐭𝐢𝐚𝐥 𝐩𝐚𝐫𝐚𝐦𝐞𝐭𝐞𝐫 𝐭𝐨 𝐃𝐞𝐜𝐞𝐦𝐛𝐞𝐫 2026.
Earlier this year, Microsoft announced that the -Credential parameter in Exchange Online PowerShell would be retired in July 2026.
The deadline has now been extended to December 2026, giving organizations more time to modernize their automation.
The -𝐂𝐫𝐞𝐝𝐞𝐧𝐭𝐢𝐚𝐥 parameter relies on the ROPC authentication flow, which doesn’t support MFA, Conditional Access, or Microsoft’s modern authentication strategy.
If your scripts still use:
Connect-ExchangeOnline -Credential $Credential
Now is a good time to:
✔️ Audit Exchange Online PowerShell scripts.
✔️ Identify automation using -Credential.
✔️ Migrate to interactive authentication, app-only authentication (certificate-based), or managed identities.
Message ID: MC1248389
