Microsoft starts retiring Graph modules on Windows PowerShell 5.1
Reviewed by Helen Jones
Microsoft put Windows PowerShell 5.x support for Microsoft Graph PowerShell modules into a 12-month retirement period on 16 September 2026. Version 2 modules should keep working on Windows PowerShell 5.1 during the transition and receive required security fixes, but new features, general fixes and validation move to PowerShell 7.x. Graph PowerShell 3.0 is planned for Q4 2026 and will be supported only on PowerShell 7.x.
This is not an immediate shutdown, which makes it easy to postpone. The practical change is that a Graph script can continue working on Windows PowerShell 5.1 while platform-specific faults stop receiving normal investigation and future module releases move past it. Small Microsoft 365 teams often inherit scripts without a clear record of which PowerShell host runs them. The 12-month window is therefore an inventory and testing deadline, not simply an instruction to install PowerShell 7 on one administrator’s laptop.
Analysis
List the scheduled tasks, admin workstations and scripts that load Microsoft Graph PowerShell modules, then record which PowerShell version each one uses. Move one low-risk script to PowerShell 7.x and test authentication, module loading and output before planning the rest.
Source note
Pulse published by Collab365 Spaces, reviewed by Helen Jones on . Cite as "Microsoft starts retiring Graph modules on Windows PowerShell 5.1", Collab365 Spaces.