NET 4 includes all prior updates for version 4. Looking at 'View installed updates' in Programs and Features in Windows 8 and 8.1, it may be possible to find the corresponding KB number and remove it that way.
Uninstall everything that starts with 'Microsoft. An easy way to bring this up on non-Windows XP systems is to type 'programs and features' in the search field at the bottom of the Start menu. Open Programs and Features from the Windows Control Panel (or Add or Remove Programs for Windows XP).Windows 7 only: To uninstall the Microsoft.
Test the system after this to see if the problem is resolved.
