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Check for Spectre and Meltdown CPU flaws using Windows Powershell

Microsoft have provided a Powershell tool for checking and reporting on an individual Windows computer.

Press the Windows key on your keyboard and type PowerShell – when you see the shortcut appear in the search results, right click on it and choose Run as Administrator.

Quick Instructions

To install the module type

Install-Module SpeculationControl

You might get prompted to install the NuGet provider. Type Y and press enter. If you’re asked about installing from an untrusted repository do the same thing again.

Once the module installs type


If you see messages about execution error you can type

Set-ExecutionPolicy Bypass


Microsoft have released an article explaining the output of the tool.