By Rabia Noureen
Publication Date: 2026-10-05 14:34:00
Key Takeaways:
- Microsoft recommends upgrading to ExchangeOnlineManagement version 3.8 or later to remain compatible with upcoming authentication changes.
- Organizations using older module versions could experience authentication failures when stricter requirements are enforced.
- Administrators should identify outdated installations and test existing scripts and automation before the changes take effect.
Microsoft is warning Exchange Online administrators that older versions of the ExchangeOnlineManagement PowerShell module may stop working correctly as the company introduces stronger authentication requirements. Organizations that have not upgraded to version 3.8 or later risk running into sign-in and connectivity issues when those changes are enforced.
Many organizations continue to use older Exchange Online PowerShell modules in administrative scripts and day-to-day management tasks. However,…
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