Four ways to install the. Net Framework 3.5 in WIN8 and Win8.1

Friends who upgrade to Win8 and win8.1 may have encountered a. NET Framework 3.5 component on the system when installing or using an application, but in Win8 and Win8.1. NET Framework is not installed by default. Here I have reviewed the data and Web collection, summed up four ways to install the. Net Framework, I hope to be able to help friends in need.
　　

Two kinds of networking methods, two offline methods.

Networking methods:

method One: prompts to install the. NET Framework 3.5 On Demand

It is generally necessary to install the. NET Framework 3.5 for some applications that use the framework, and the following message box pops up by first installing or running an application that requires the. NET Framework 3.5. In the message box, select Install this feature to install the. NET Framework 3.5. This option requires an Internet connection.

method Two: enable the. NET Framework 3.5 in Windows features
Win + R Open the Run box, enter "Optionalfeatures" (excluding double quotes), enter, and then select the ". NET Framework 3.5 (including. NET 2.0 and 3.0)" check box. This option also requires an Internet connection. You do not have to select a subkey for Windows communication Foundation (WCF) HTTP activation unless you are a developer who requires WCF scripting and handler mapping capabilities.

Offline Method:

method One: use the original WIN8 or Win8.1 to install the disc or image

If you have an original WIN8 or Win8.1 installation disc, put it in the CD-ROM drive, note the drive letter of the CD-ROM (this is assumed to be an H drive), press win+x, select "Command Prompt (Administrator)", and in the popup window enter "Dism.exe/online/ Enable-feature/featurename:netfx3/source:g:\sources\sxs ", enter to automatically install the NET3.5, install the closed window can be completed.

If there is no original win8/win8.1 installation CD, downloading the ISO image file of the original system on the Internet is also possible. After downloading, double-click to load the virtual CD drive, note the virtual CD drive letter (this is assumed to be the H drive), press win+x, select "Command Prompt (Administrator)", in the popup window, enter "Dism.exe/online/enable-feature/featurename: Netfx3/source:g:\sources\sxs ", enter to automatically install the NET3.5, install the closed window can be completed. Here is the window when the operation succeeds:

method Two: This method, like the method above, requires a Windows installation disc or an ISO image. Win + R Open the Run box, enter "Gpedit.msc" (excluding double quotes), open the Group Policy Editor, expand Computer Configuration, click Administrative Templates, and then select System, and on the right, drop the scroll bar and locate the "Specify Settings for optional component installation and component Repair" as shown in:

Right-click "Specify settings for optional component installation and component Repair", and select "edit" to pop up the dialog box:

The default is disabled, select Enabled, and then in the alternate source file path Enter the CD drive letter: \sources\sxs, for example, my Win8.1 ISO file is mounted on the H drive, and I'm typing "H:\sources\sxs" and I'm sure.

Here are four ways to do this.