Fixing Windows Update Error 80071AA7 | SmartPCFixer Official Blog

When you are trying to update the system with windows update center, you may suddenly get this error:

Error details: Code 80071AA7

In most cases, this error is temporarily caused by very slight interruptions in communications between the computer to be updated and the update to be downloaded.

Below are several possible causes of error 80071AA7:

Internet is not connected

Antivirus or firewall block windows update center

Windows update components are not well registered

System files are corrupted

To resolve the issue:

First, verify that the internet is connected stably.

Try to access some websites with your browser and see if you can view any websites. If not, your internet connection may be interruppted. Check and ensure that the cable or wireless adapter is correctly set and connected before you move on to next step. If you can’t get the internet connected, contact your internet service provider for help.

Second, disable Antivirus software and try the update again.

Protective software, such as antivirus or firewall, may sometimes block windows update. It worths a try to turn off these third party software first and then try windows update again. You may find the issue resolved by such a simple solution. If the situation is not improved, continue to step 3.

Third, re-register windows update components.

Start button,
click run button or click search box
copy and paste below commands one by one:
regsvr32 wuapi.dll
regsvr32 wups.dll
regsvr32 wuaueng.dll
regsvr32 wuaueng1.dll
regsvr32 wucltui.dll
regsvr32 wuweb.dll
regsvr32 MSXML3.dll
regsvr32 qmgr.dll
regsvr32 qmgrprxy.dll
regsvr32 jscript.dll

Fourth, run a system files check to fix corrupted system files.

open start button
run box,
type sfc /scannow and press enter.
The command will start a scan to check your system files. If an install CD is required, simply put it in the CD rom and let it repair your system.

To fix system files, you can also refer to the help from a windows update fixing tool. It can detect system errors and registry issues in your computer and fix them in a minute. It also has specific function to fix windows update errors by updating windows update components and creating an independent chanel for windows update to avoid conflicts with other programmes.