How to fix Windows Update error 0x80070bc2?

by Julie Splinters - -
12

Question

Issue: How to fix Windows Update error 0x80070bc2?

Hello. I have an Acer laptop with Windows 10 V-1709 installed. I noticed that the Windows Update gives an error 0x80070bc2 error and keeps failing to install cumulative update KB4048955. The same happened with the KB4043961 error before. Could you please help?

Solved Answer

People come across the error code 0x80070bc2 when checking Windows Update[1] history. For many, it occurred when trying to install Windows 10 Cumulative Updates KB4043961 and KB4048955.

When opened, Windows Update history indicates the fact that Cumulative Update KB4048955 “Requires a restart to finish installing.” That’s a kind of a loop because after restart, the update shows the 0x80070bc2 error and reports that the update failed to install. That’s a vicious circle because the no matter how many times the user tries to install the update, the same sequence of events occur.

There are many different problems that may trigger the Windows Update error 0x80070bc2. In most of the case, the error stems from the corruption of Windows Update services or compromised Windows update files.[2] In this case, it does not seem that the error 0x80070bc2 is caused by faulty KB4043961 and KB4048955 updates because hundreds of thousands of people installed it successfully.

Fix 0x80070bc2 error

Actually, the reason of the bug may be related to the system’s restart during which some update processes are blocked. In this case, we would strongly recommend you to run a scan with Reimage optimization utility. It will scan the system for corrupted registry entries, damaged or missing system files, and check if it’s not infected with malware.[3]

If automatic 0x80070bc2 error fix did not work, try the following methods.

Set Windows Update services to Automatic

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The free scanner will identify main causes of your problem in its scan report. To eliminate them, you have to activate the licensed version of Reimage repair software by purchasing it. To repair damaged system, you have to purchase the licensed version of Reimage Reimage.
  • Right-click on Windows key and select Command Prompt (Admin).
  • Type the following commands in Command Prompt window. To execute them, press Enter after each one. 
    SC config wuauserv start= auto
    SC config bits start= auto
    SC config cryptsvc start= auto
    SC config trustedinstaller start= auto
  • Finally, restart your PC and try to install the update that was previously returning the 0x80070bc2 error.

Set needed services to automatic

Run Windows Update Troubleshooter

Fix it now! Fix it now!
The free scanner will identify main causes of your problem in its scan report. To eliminate them, you have to activate the licensed version of Reimage repair software by purchasing it. To repair damaged system, you have to purchase the licensed version of Reimage Reimage.
  • Press Windows key + I and open Update & Security section.
  • Select Troubleshoot and find Windows Update.
  • Click Windows Update and select Run troubleshooter.

The scan may take up to 10 minutes. You should get a window with scan results and notification if Windows managed to fix the problems automatically. 

Run Windows Update Troubleshooter

Reset Windows Update Components

Fix it now! Fix it now!
The free scanner will identify main causes of your problem in its scan report. To eliminate them, you have to activate the licensed version of Reimage repair software by purchasing it. To repair damaged system, you have to purchase the licensed version of Reimage Reimage.
  • Right-click Windows key and select Command Prompt (Admin).
  • If a UAC shows up, click OK to proceed.
  • By typing the following commands you will stop BITS, Windows Update, Cryptographic, MSI Installer services. Don't forget to press Enter after each of them:
    net stop bits
    net stop wuauserv
    net stop appidsvc

Reset Windows Update components

  • Then type Del “%ALLUSERSPROFILE%\\Application Data\\Microsoft\\Network\\Downloader\\qmgr*.dat” command to delete qmgr*.dat files.
  • Once done, copy and paste cd /d %windir%\\system32 command and press Enter to execute the command.
  • To re-register BITS and Windows Update files, you will have to type all the commands (followed by Enter) provided below:
    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
  • To reset Winsock, type netsh winsock reset and netsh winhttp reset proxy commands. Press Enter after each of them as usually.
  • Finally, restart BITS, Windows Update, Cryptographic, MSI Installer services by entering the following commands each followed by Enter:
    net start bits
    net start wuauserv
    net start appidsvc
    net start cryptsvc

Install the Update Manually

Fix it now! Fix it now!
The free scanner will identify main causes of your problem in its scan report. To eliminate them, you have to activate the licensed version of Reimage repair software by purchasing it. To repair damaged system, you have to purchase the licensed version of Reimage Reimage.

Navigate to the official update catalog and download the needed update manually. Click on this link to access the catalog and type the code of the update into the search bar and press Enter. Now click Download button next to the entry of the update. Once the update is downloaded, try to install it. 

Repair your Errors automatically

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Still having problems?
If you failed to fix your error using Reimage, reach our support team for help. Please, let us know all details that you think we should know about your problem.
Reimage - a patented specialized Windows repair program. It will diagnose your damaged PC. It will scan all System Files, DLLs and Registry Keys that have been damaged by security threats.Reimage - a patented specialized Mac OS X repair program. It will diagnose your damaged computer. It will scan all System Files and Registry Keys that have been damaged by security threats.
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About the author

Julie Splinters - Computer optimization specialist

When it comes to computer optimization, Julie Splinters is the expert. Whether it is a slow smartphone, Windows, Mac or Linux operating system, she will find a solution within minutes.

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