Solution: 1. Unzip the downloaded Windows iso file and open the source folder; 2. Copy the sxs folder and paste it into a certain disk partition; 3. Open the "Enable or turn off Windows functions" window ;4. Check ".NET framework 3.5" and click OK.

The annoying ".Net Framework 3.5 needs to be installed" prompt

Some users have found that some functions cannot be used normally on the computer, or cannot run normally. The application prompts that .Net Framework 3.5 needs to be installed, or a window that requires installation pops up after booting, but the installation cannot be successful. At this time, you may wish to refer to the solutions provided below to see if you can fix the .Net Framework 3.5 installation error on your computer.

1. Unzip the downloaded windows iso file and open the source folder

Or use the iso file or installation package to decompress it when you install the system:

2. Copy the sxs folder and paste it to a certain disk partition, such as the D drive

3. Open it as an administrator Command prompt and run a command

Enter:

dism.exe /online /enable-feature /featurename:netfx3 /source:D:\sxs

The D refers to the D drive. Similarly, if it is copied to the F drive Then change to F, press Enter to execute, and regret that the operation is successful;

4. Open the Control Panel-Programs-Enable or turn off Windows functions

5. Check .NET framework 3.5 (including .net 2.0 and 3.0) and click OK

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