Windows Installer Error 1603, is one of the most common standard system error that every Microsoft Windows user must have come across. This error message is really very annoying and generally occurs when user attempts to install/update a Windows Installer package. The error message that user get related to this is very much similar to the one as mentioned below -

“Error 1603: A fatal error occurred during installation”

Causes behind Windows Installer Error 1603

This error generally occurs because of any of the below mentioned reasons -

• Computer has outdated drivers.
• You might not have logged as Administrator or System user to install Windows package.
• Your system might have infected with viruses/spyware.
• The Windows installer package is encrypted
• Windows registry is corrupted or might contain to much obsolete entries.

Symptoms of Windows Installer Error 1603

Once you will receive Installer Error 1603 and click on \'OK\' button on the error message, you will not be able to continue the installation. In fact at times, this error happens at the middle of the installation process which rollbacks the installation process. So, it is advised to fix Windows Installer Error 1603 as soon as possible, before it causes any issue.

How to Fix Windows Installer Error 1603?

In order to resolve or fix Windows Installer Error 1603, you need to follow some steps as mentioned below.

Solution 1 – Modify the Control Settings Fully.

• First double click to open, My Computer and then right click the target drive where you want install the Windows Package and select \'Properties\'.
• After that, go to the securities tab, verify the Name box or Group or user box.
• Once it is done, go to the Permissions sections and tick the full control check box.
• Reboot your PC and then try to install the application again.

Solution 2 – Fix and Clean up Windows Registry.

Windows registry is one of the most important components of Windows operating system and problems related to it has always been a biggest reasons of several error messages. So, may be issues related to the Windows Registry has also caused Windows Installer Error 1603, that\'s why it s important you clean Windows Registry and fix issues related to it. For this you need to use an efficient Windows registry cleaner which can clean up and all the Windows related issues.