This document explains how to fix Microsoft Windows error code 80070078 or 0x80070078 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: 59 updates -KB937287

Error(s) found: Code 80070078 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 80070078 Windows Update Overview
Avg. Time to Resolve Issue   30 mins
Difficulty Hard
Log Name: MicrosofWindowsUpdateError5511.log
Source: Device
Event ID: 3733
Operating System
  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10
Level: Critical Error
User: User
  • Faulting Application Name: Window Update Manager , version: 7.3.8832.77595, time stamp: 0×54673541
  • Faulting module name: Windows  update.dll, version: 8.7.6048.34838
  • Exception code: 0xb05g524f
  • Fault offset: 0xb08e427g
  • Faulting process ID: 0×538
  • Faulting application start time: 0x800e4f74435616
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Windows\System32
  • Report ID: e4e94g83-2528-87e6-1927-7865eed4g751
Also Known as
  • WindowsUpdate_80070078
  • 80070078
  • WindowsUpdate_80070078e
  • 80070078e
  • 0x80070078
  • fehler code 80070078, foutcode 80070078, fejlkode 80070078, code d’erreur 80070078, codice di errore 80070078, feil kode 80070078, cod de eroare 80070078, código de error 80070078

Cause of 80070078 Windows Update Error Code

  • DNS Conflict
  • Temporary files location is infected with active malware

Steps to resolve Windows Error 80070078

Step 1: Check if your network is behind Proxy

1. Press Win Key + R and Type CMD
2. Click 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. 

Step 2: Disable any installed Antivirus/Malware/Adware Program Temporarily:

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.

In most cases Microsoft Windows update error 80070078 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: 18/02/2016
Solution ID: 158169

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  • April 13th, 2016

    Posted In: Microsoft Windows

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