Security update for the .NET Framework on Windows 7 x64 Home premium Edition (KB2604114) continually fails to install either through automatic updates or even with manual download and install.

Automatic download stops at 11% (dowloading) and does not proceed further and the manual install fails every time at 1/3 progress bar.

Tried running Microsoft Fix It (that fixed some other install issues). Even tried to install the update keeping antivirus off. Uninstalled and reinstalled .Net framework. Also used .NET Framework Cleanup Tool. Still same problem persits.

Tried almost every option from Microsoft official forum as well. Still same problem persists since 2-3 months, So please help.