How to upgrade PowerShell version from 2.0 to 3.0

问题:

The OS that I am using is Windows 7, and the PowerShell version that is installed here is 2.0. Is it possible for me to upgrade it to version 3.0 or 4.0?

Because there are cmdlets that version 2.0 can't recognize.

回答1:

Download and install from http://www.microsoft.com/en-us/download/details.aspx?id=34595. You need Windows 7 SP1 though.

It's worth keeping in mind that PowerShell 3 on Windows 7 does not have all the cmdlets as PowerShell 3 on Windows 8. So you may still encounter cmdlets that are not present on your system.

回答2:

The latest PowerShell version as of Sept 2015 is PowerShell 4.0. It's bundled with Windows Management Framework 4.0.

Here's the download page for PowerShelll 4.0 for all versions of Windows. For Windows 7, there are 2 links on that page, 1 for x64 and 1 for x86.

回答3:

Just run this in a console.

@powershell -NoProfile -ExecutionPolicy unrestricted -Command "iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))" && SET PATH=%PATH%;%systemdrive%\chocolatey\bin
cinst powershell

It installs the latest version using a Chocolatey repository.

Originally I was using command cinst powershell 3.0.20121027, but it looks like it later stopped working. Since this question is related to PowerShell 3.0 this was the right way. At this moment (June 26, 2014) cinst powershell refers to version 3.0 of PowerShell, and that may change in future.

See the Chocolatey PowerShell package page for details on what version will be installed.

回答4:

1. Install Chocolatey

2. Run the following commands in CMD

   • choco install powershell

   • choco upgrade powershell

回答5:

As of today, Windows PowerShell 5.1 is the latest version. It can be installed as part of Windows Management Framework 5.1. It was released in January 2017.

Quoting from the official Microsoft download page here.

Some of the new and updated features in this release include:

• Constrained file copying to/from JEA endpoints
• JEA support for Group Managed Service Accounts and Conditional Access Policies
• PowerShell console support for VT100 and redirecting stdin with interactive input
• Support for catalog signed modules in PowerShell Get
• Specifying which module version to load in a script
• Package Management cmdlet support for proxy servers
• PowerShellGet cmdlet support for proxy servers
• Improvements in PowerShell Script Debugging
• Improvements in Desired State Configuration (DSC)
• Improved PowerShell usage auditing using Transcription and Logging
• New and updated cmdlets based on community feedback

回答6:

The latest PowerShell version as of Aug 2016 is PowerShell 5.1. It's bundled with Windows Management Framework 5.1.

Here's the download page for PowerShell 5.1 for all versions of Windows, including Windows 7 x64 and x86.

It is worth noting that PowerShell 5.1 is the first version available in two editions of "Desktop" and "Core". Powershell Core 6.x is cross-platform, its latest version for Jan 2019 is 6.1.2. It also works on Windows 7 SP1.