This is the most direct solution if you are specifically facing error 0x800f0952 while trying to enable . It bypasses Windows Update entirely and installs the feature using the files from a Windows installation ISO file.
Navigate to: Computer Configuration > Administrative Templates > System 0x800f0952 free
If you don’t have installation media, download the official Windows ISO for your version and mount it. This is the most direct solution if you
Follow the automated instructions to fix detected service blockages. 2. Deploy SFC and DISM Repairs via Command Prompt Follow the automated instructions to fix detected service
Have a unique variation of this error? Describe your setup in the comments below. For official Microsoft support, visit support.microsoft.com (always free).
This is a highly reliable method if online installation keeps failing. It uses your own Windows installation media as a source for the .NET 3.5 files.