This document explains how to fix Microsoft Windows error code 80070426 or 0x80070426  if it is not working properly or throwing an error while installing, updating or upgrading Windows.

The error message may look like:
– Windows could not search for new updates. An error occurred while checking for new updates for your computer.
– Some updates were not installed. Failed: 24 – KB2092914, KB890830,KB2277947, KB2251419, KB971058, KB947821
Error(s) found: Code 80070426 Windows update encountered an unknown error.

This solutions applies for following version of Microsoft Windows:

  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10
Error 80070426 Windows Update Overview
Avg. Time to Resolve Issue   50 mins
Difficulty Hard
Log Name: MicrosofWindowsUpdateError3721.log
Source: Device
Event ID: 6703
Operating System
  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10
Level: Critical Error
User: User
  • Faulting Application Name: Window Update Manager , version: 4.8.9583.77792, time stamp: 0×46141826
  • Faulting module name: Windows  log.dll, version: 2.1.3903.23897
  • Exception code: 0xe07f375e
  • Fault offset: 0xb09g643e
  • Faulting process ID: 0×866
  • Faulting application start time: 0x800f7f04392516
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Windows\System32
  • Report ID: d1c55e81-4613-48f1-2564-4796eec6g336
Also Known as
  • WindowsUpdate_80070426
  • 80070426
  • WindowsUpdate_80070426e
  • 80070426e
  • 0x80070426
  • fehler code 80070426, foutcode 80070426, fejlkode 80070426, code d’erreur 80070426, codice di errore 80070426, feil kode 80070426, cod de eroare 80070426, código de error 80070426

Cause of 80070426 Windows Update Error Code

  • Windows Firewall blocking the installation
  • System Level Conflict

How to Resolve Windows Error 80070426

Step 1: Disable Windows Firewall Temporarily

1. In Start Search box type Firewall.cpl
Open Windows Firewall2. Click on Windows Firewall.
3. Click on “Turn Windows Firewall On or Off
Turn Windows Firewall on or off4. In Private network Setting, select “Turn off Windows firewall (not recommended)
5. Do the same for Public Network Setting.
Disable Windows Firewall6. Press OK.
Note: After the issue is resolved you must turn the Windows Firewall on.

Step 2: Disable Proxy
1. Hold Win Key + R. Run Dialogue Box will open up.
2. Type CMD and Press OK.
Office Resolve Error Proxy Check 3. In command Prompt Copy following commands (Simply select the command and hold ctrl+c and press ctrl+v in command prompt)

 netsh winhttp show proxy 

Check Proxy Setting

Note: You will need Administrator Access to Run the above command. Simply Right Click on cmd button and select “Run as Administrator

If you get the message “Direct Access (no proxy server)“, continue to the next step otherwise disable proxy from Network Settings.

 You can contact our 24×7 Live support for any help during the whole process. 

In most cases Microsoft Windows update error code 80070426 should be resolved by following above steps. If however the issue still persists it means there is some critical issue with your system which needs to be fixed manually and is recommended to be done by an experienced Computer Technician.

You can chat one-on-one with one of our Microsoft Certified Support Representative 24/7 by clicking on the Chat button.

Rate this Solution
Did this article help you?
73   0      
Last Updated: 02/01/2016
Solution ID: 552838

  • Windows Update Error 0x101-0x20017 | How to fix Steps
  • Windows Update Error c8000266 | How to fix Steps
  • Windows Update Error 80246013 | How to fix Steps
  • Windows Update Error 800b0100 | How to fix Steps
  • Windows Update Error 0x80242fff | How to fix Steps
  • Windows Update Error 80240020 | How to fix Steps
  • Windows Update Error 80073712 | How to fix Steps
  • Windows Update Error 80072efe | How to fix Steps
  • Error Code 30125-28 (12029) for Office 365 Installation and Updtes
  • Windows Update Error c190020e | How to fix Steps
  • April 13th, 2016

    Posted In: Microsoft Windows

    LiveZilla Live Chat Software