Error Code 1603 Windows Installer and Fatal Error / Msi error – How to Fix Steps
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:
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 MicrosoftWindows 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.
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