Can't Install .NET Framework 3.5

Hi, everyone. I've been trying to do this for hours to run a program that needs it and I'm about to lose my mind. On my 8.1 laptop, I run a program (.exe) that tries to install ".NET Framework 3.5 (includes .NET 2.0 and 3.0)". Well, it only ever leaves me with this message:


The component store has been corrupted.

Error code: 0x80073712



I've tried so many things to make it run that I have no idea what to do anymore. The exact same program runs perfectly fine on my windows 7 desktop, and it is supposed to be fully compatible with 8. Can you guys please help me out?

Normally, .net framework 3.5 is included with Windows 8. I haven't tried these 2 links, but found this on Google:
How to remove and reinstall the Microsoft .NET Framework | AutoCAD | Autodesk Knowledge Network
How to Repair or Reinstall .NET Framework 3.5

From Microsoft:
.NET Framework on Windows 8 - Windows Help

this is MS article regarding your error code, Windows Update error 0x80073712 - Windows Help

since windows is telling you that the component store is corrupted, you might want to just run DISM right off the bat. This is a link to Brink's guide for using DISM http://www.eightforums.com/tutorials/26512-dism-fixing-component-store-corruption-windows-8-a.html

When I run DISM, CheckHealth works and says that the corruption is repairable. However, ScanHealth and RestoreHealth both give me the same error. They say:


Error: 1392

The file or directory is corrupted and unreadable.

The DISM log file can be found at C:/Windows/Logs/DISM/dism.log


I might be misunderstanding something, but isn't the whole purpose of DISM to fix the corruption? I don't understand why it just gives up at about 20%.

To install .NET 3.5 If you have Windows OS install media you can use this command in an admin command prompt:

DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:d:\sources\sxs

Where the source marked in red must be the drive letter of the OS install media (USB or DVD)