This document explains how to fix Microsoft Windows error 80070543 or 0x80070543 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 updated were not installed. Failed: 99 updates KB3081424, KB3081444, KB3081441, KB3074678 & KB3074686
Error(s) found: Code 80070543 Windows update encountered an unknown error.
– Cumulative Update for Windows 10 for x64-based Systems (KB3081424) – Error 0x80070543

This solutions applies for following version of Microsoft Windows:

  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10
Error 80070543 Windows Update Overview
Avg. Time to Resolve Issue   50 mins
Difficulty Very Hard
Log Name: MicrosofWindowsUpdateError4522.log
Source: Device-manager
Event ID: 7239
Operating System
  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10
Level: Critical Error
User: User
  • Faulting Application Name: Window Update Manager , version: 7.8.6283.17128, time stamp: 0×55839130
  • Faulting module name: Windows  log.dll, version: 4.7.5329.66720
  • Exception code: 0xe09a748e
  • Fault offset: 0xc04f875d
  • Faulting process ID: 0×496
  • Faulting application start time: 0x800c5d11355634
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Windows\System32
  • Report ID: e6e96d25-3174-62c4-8936-1875bcc3a283
Also Known as
  • WindowsUpdate_80070543
  • 80070543
  • WindowsUpdate_80070543e
  • 80070543e
  • 0x80070543
  • fehler code 80070543, foutcode 80070543, fejlkode 80070543, code d’erreur 80070543, codice di errore 80070543, feil kode 80070543, cod de eroare 80070543, código de error 80070543

Cause of 80070543 Windows Update Error Code

  • Windows Firewall blocking the installation
  • System DLL files conflict

Steps to resolve Windows Error 80070543

Step 1: Temporarily Disable any installed 3rd Party Antivirus

Some times Antivirus/Malware/Adware programs mark Microsoft Windows installer files as Spam and block it from installing. Please refer your vendors website for disabling it temporarily. Once installation is done you can activate it again.

Step 2: Check if your network is behind Proxy
1. Hold Windows 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 press ctrl+c and press ctrl+v in command prompt)

 netsh winhttp import proxy source=ie 

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 80070543 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.

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Last Updated: 28/02/2016
Solution ID: 263229

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    April 13th, 2016

    Posted In: Microsoft Windows

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