tried

Type:
net stop wuauserv then press enter
regsvr32 wuapi.dll then press enter
regsvr32 wuaueng.dll then press enter
regsvr32 wucltux.dll then press enter
regsvr32 wudriver.dll then press enter
regsvr32 wups2.dll then press enter
regsvr32 wups.dll then press enter
regsvr32 wuwebv.dll then press enter
net start wuauserv then press enter
exit then press enter

ran the windows update troubleshooter

and disabled all virus protection.

• Edited by umar jan Monday, February 24, 2014 2:10 PM

Hi,

This issue can be caused by corrupted Windows update components, please follow these steps to check the issue:

Step 1: Reset Windows update components:

How do I reset Windows Update components?

http://support.microsoft.com/kb/971058

Step 2: System file checker

SFC

http://support.microsoft.com/kb/929833/en-us

Any error message after SFC or the issue persists, please post back the CBS.log and Windowsupdate.log for further research.

%WinDir%\Logs\CBS\CBS.log

%WinDir%\windowsupdate.log

You can upload them into OneDrive and post back the shared

i have already tried the reset Windows Update components using update troubleshooter and have also done the sfc /scannow and the report is as follows:

Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log <var>%WinDir%</var>\Logs\CBS\CBS.log

note:i have checked the sfc /scannow even when the windows update was working fine but the result was same like Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log <var>%WinDir%</var>\Logs\CBS\CBS.log 

and how could i fix these corrupted files not atleast manually???

You can also try running DISM /Online /Cleanup-Image /RestoreHealth which performs similar tasks to SFC /ScanNow. DISM /Cleanup-Image /RestoreHealth functionality is documented here in the TechNet Article Repair a Windows Image.

Brandon
Windows Outreach Team- IT Pro
The Springboard Series on TechNet