Sunday, June 2, 2013

Windows Update Encountered An Unknown Error

3:26 PM

This article will help you to fix Error 80070570 for failure in installing Windows Updates as experienced in Windows.

Everyone wants to keep his system updated, the way is the have automatic installation of Windows Updates. But there may be certain scenarios when you can’t install all updates fully. The reason behind this could be wast, may be you need to repair your computer in order to fix the issues concerning unsuccessful installation of updates.

Today in this article, we’ll see the fix for one such error. Error 80070570 : Windows Update encountered an unknown error, some updates were not installed, as you can see in image above, the issue lets the incomplete installation of Windows Updates. The thing noticeable here is that “Try again” button doesn’t seems working and won’t solve the issue.

FIX 1 : Use Windows Update Automated Troubleshooter

To fix it out initially, you can try the Windows Update Automated Troubleshooter, a specially designed tool to found out and fixes concerning Windows Update. You can download it using following link:
  • Download Windows Update Automated Troubleshooter
If the troubleshooter was not able to fix your issue, then you can try the following manual fix and we’re pretty sure it will work. Make sure you follow the exact procedure. We recommend you to create a System Restore point before making any changes to system. Here is the fix:

FIX 2 : Resetting Windows Update Components

  • 1. Open the Command Prompt with administrative privileges.
  • 2. Now stop the Background Intelligent Transfer Service (BITS) and Windows Update services using following commands:
net stop bits

net stop wuauserv
  • 3. Moving on, type following command:

Del “%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\qmgr*.dat”

After applying above stated command, check whether the issue still persists or not. If it is fixed, then skip the step 4 and directly go to the step 5.
  • 4. This is the aggressive step in order to fix the issue. You need to rename following folders using Command Prompt:

To rename the folders, using following commands respectively:

Ren %systemroot%\SoftwareDistribution\DataStore *.bak

Ren %systemroot%\SoftwareDistribution\Download *.bak

Ren %systemroot%\system32\catroot2 *.bak
  • 5. Now we, reset the BITS service and the Windows Update service to the default security descriptor. To do this enter following commands (copy the commands and right click paste it Command Prompt) :


Now type the following command:

cd /d %windir%\system32
  • 6. Next, re-register the BITS files and the Windows Update files. This requires the following bunch of commands to be executed:
regsvr32.exe atl.dll
regsvr32.exe urlmon.dll
regsvr32.exe mshtml.dll
regsvr32.exe shdocvw.dll
regsvr32.exe browseui.dll
regsvr32.exe jscript.dll
regsvr32.exe vbscript.dll
regsvr32.exe scrrun.dll
regsvr32.exe msxml.dll
regsvr32.exe msxml3.dll
regsvr32.exe msxml6.dll
regsvr32.exe actxprxy.dll
regsvr32.exe softpub.dll
regsvr32.exe wintrust.dll
regsvr32.exe dssenh.dll
regsvr32.exe rsaenh.dll
regsvr32.exe gpkcsp.dll
regsvr32.exe sccbase.dll
regsvr32.exe slbcsp.dll
regsvr32.exe cryptdlg.dll
regsvr32.exe oleaut32.dll
regsvr32.exe ole32.dll
regsvr32.exe shell32.dll
regsvr32.exe initpki.dll
regsvr32.exe wuapi.dll
regsvr32.exe wuaueng.dll
regsvr32.exe wuaueng1.dll
regsvr32.exe wucltui.dll
regsvr32.exe wups.dll
regsvr32.exe wups2.dll
regsvr32.exe wuweb.dll
regsvr32.exe qmgr.dll
regsvr32.exe qmgrprxy.dll
regsvr32.exe wucltux.dll
regsvr32.exe muweb.dll
regsvr32.exe wuwebv.dll
  • 7. After running and registering all components using above commands, run following command:
netsh reset winsock

In case you’re running Windows XP, then additionally execute following command to set proxy settings:

proxycfg.exe -d
  • 8. We’re almost done now! Just restart the BITS & Windows Update services again using following commands:
net start bits

net start wuauserv

In this way your issue should be fixed now. Try reinstalling the updates which were not completely installed previously. It should work fine now. If you’re still facing the issues, then please let us know via comment box

Note: If this Tutorial and News worked for you (and it should work), please leave a comment below. Thanks.

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