Okay - if you want a fix it's long winded and you could end up going round and round in circles with the same issue for a few hours.
However - here's my best attempt at explaining it.
Important: Make a system image backup. Do not go ahead without one!
Reset Internet Explorer to default settings. Control Panel > Internet Options > Advanced > Reset
Reboot when it's been reset.
Switch to default Hosts file if you're using a modified Hosts file.
Microsoft has the very powerful Fix It Tool 50202 that completely reinstalls Windows Update components. It's hard to find so here's a direct download link:
hxxps://www.winhelp.us/files/MicrosoftFixit50202.msi
Run aggressive options.
Disconnect your network adapter.
Reboot.
Make sure that you have at least 10% free space on your windows partition.
Run the following commands from an elevated command prompt. You'll need to eanble copy/ paste. You also need to run Powershell for some of the commands and exit Powershell to run others.
Modified version from Brink's tutorial:
Code:
:: Created by: Shawn Brink
:: [url]http://www.sevenforums.com[/url]
:: Tutorial: [url]http://www.sevenforums.com/tutorials/91738-windows-update-reset.html[/url]
net stop bits
net stop wuauserv
net stop appidsvc
net stop cryptsvc
Ipconfig /flushdns
del /f /q "%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\qmgr*.dat"
del /f /s /q %SystemRoot%\SoftwareDistribution\*.*
del /f /s /q %SystemRoot%\system32\catroot2\*.*
del /f /q %SystemRoot%\WindowsUpdate.log
[B]NOTE:[/B] Check manually that the above entries have been deleted. If not - force delete or delete on boot or unlock and delete. Just make sure that they're deleted.
Type Powershell and press Enter
sc.exe sdset bits D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)
sc.exe sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)
Exit Powershell (type Exit and press Enter)
The prompt should read: C:\Windows\System32>
regsvr32.exe /s atl.dll
regsvr32.exe /s urlmon.dll
regsvr32.exe /s mshtml.dll
regsvr32.exe /s shdocvw.dll
regsvr32.exe /s browseui.dll
regsvr32.exe /s jscript.dll
regsvr32.exe /s vbscript.dll
regsvr32.exe /s scrrun.dll
regsvr32.exe /s msxml.dll
regsvr32.exe /s msxml3.dll
regsvr32.exe /s msxml6.dll
regsvr32.exe /s actxprxy.dll
regsvr32.exe /s softpub.dll
regsvr32.exe /s wintrust.dll
regsvr32.exe /s dssenh.dll
regsvr32.exe /s rsaenh.dll
regsvr32.exe /s gpkcsp.dll
regsvr32.exe /s sccbase.dll
regsvr32.exe /s slbcsp.dll
regsvr32.exe /s cryptdlg.dll
regsvr32.exe /s oleaut32.dll
regsvr32.exe /s ole32.dll
regsvr32.exe /s shell32.dll
regsvr32.exe /s initpki.dll
regsvr32.exe /s wuapi.dll
regsvr32.exe /s wuaueng.dll
regsvr32.exe /s wuaueng1.dll
regsvr32.exe /s wucltui.dll
regsvr32.exe /s wups.dll
regsvr32.exe /s wups2.dll
regsvr32.exe /s wuweb.dll
regsvr32.exe /s qmgr.dll
regsvr32.exe /s qmgrprxy.dll
regsvr32.exe /s wucltux.dll
regsvr32.exe /s muweb.dll
regsvr32.exe /s wuwebv.dll
regsvr32 /s wudriver.dll
REG DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate" /v SusClientId /f
netsh winsock reset
net start bits
net start wuauserv
net start appidsvc
net start cryptsvc
Type Powershell and press Enter.
bitsadmin.exe /reset /allusers
Type Exit then Exit and press Enter.
Reconfigure Windows Update settings.
Start > All Programs > Windows Update
Do not check for updates.
Reconnect your network adapter and reboot.
Wait 10 minutes and run a check for updates. Don't be surprised if memory usage is high the first time as checks are carried out.
If you still get a problem the next day (next windows update check) then try force reinstalling Windows Update Agent.
https://support.microsoft.com/en-us/kb/949104
Download the version for your OS and save it somewhere then:
Start> Run
then type
"
Full PathTo\WindowsUpdateAgent-7.6-x64.exe" /wuforce
For 64bit windows
or
"
Full PathTo\WindowsUpdateAgent-7.6-x32.exe" /wuforce
For 32bit windows
Replace "FullPathTo" with the actual path.
Reboot.
Reconfigure Windows Update settings again.
If there's still a problem run the script again.
If there's still a problem after that let us know.
