This document explains how to fix Microsoft Windows Installer error code 1603 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: 54 updates
Error(s) found: Code 1603 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 1603 Windows Update Overview
Avg. Time to Resolve Issue   30 mins
Difficulty Hard
Log Name: MicrosofWindowsUpdateError2577.log
Source: Device-manager
Event ID: 7631
Operating System
  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows 10
Level: Warning
User: Admin
  • Faulting Application Name: Window Update Manager , version: 1.6.7295.49329, time stamp: 0×53383089
  • Faulting module name: Windows  update.dll, version: 2.0.5904.88025
  • Exception code: 0xc04f842c
  • Fault offset: 0xe06f399a
  • Faulting process ID: 0×160
  • Faulting application start time: 0x800a3f80716015
  • Faulting application path: ~<userpath>
  • Faulting module path: ~C:\Windows\System32
  • Report ID: d7e99c59-8625-94b7-5278-7624bbg6e336
Also Known as
  • WindowsUpdate_8007006e
  • 1603
  • WindowsUpdate_1603e
  • 1603e
  • 0x1603
  • fehler code `, foutcode 1603, fejlkode 1603, code d’erreur 1603, codice di errore 1603, feil kode 1603, cod de eroare 1603, código de error 1603

Cause of 1603 Windows Update Error Code

  • Internet connectivity issue
  • System Level Conflict

Steps to resolve Windows Installer Error 1603

Step 1: Check for corrupt system files:

1. In Start Searchbox type Cmd
2. Click on CMD
open command prompt3. In command Prompt Copy following commands (Simply select the command and press Ctrl+C and press Ctrl+V in command prompt)

 sfc /scannow 

sfc scannow for error code 1603 Windows Installer
The system will take some time to check. Let it run for a while. If it finds any issues in “operating system” integrity it will automatically fix it.

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

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

Step 2: Temporarily Disable any installed 3rd Party Antivirus:

Sometimes 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 the installation is done you can activate it again.

In most cases Microsoft Windows update error code 1603 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?
87   0      
Last Updated: 08/02/2016
Solution ID: 676963

  • Windows Update Error 80073b92-20009 | How to fix Steps
  • Windows Update Error 800700c1 | How to fix Steps
  • Windows Update Error 80070070-2000c | How to fix Steps
  • Windows Update Error 80080008 | How to fix Steps
  • Windows Update Error 80072efd | How to fix Steps
  • Windows Update Error 0x80073cf1 | How to fix Steps
  • Windows Update Error 0x80242fff | How to fix Steps
  • Windows Update Error 80240437 | How to fix Steps
  • Windows Update Error 800736b3 | How to fix Steps
  • Windows Update Error 0x8007045d | How to fix Steps
  • May 31st, 2016

    Posted In: Microsoft Windows


    LiveZilla Live Chat Software