Windows Installer errors are not common and rarely occur. The errors related to Windows Installer are usually caused by the hardware connected to your PC in which case the Installer is not to blame but the media or hardware you’re utilizing is at fault.

What causes Windows Installer Error 0x80300002?

Windows Installer errors don’t occur every day but when they do, it usually is due to — With that said, use the following solutions to resolve your issue:

Solution 1: Disconnect any External Hardware

The error can sometimes be caused by external hardware connected to your system. A few users have reported that their error was due to the external hardware that was connected to their system and was resolved once the hardware was disconnected. Hence, to start off, make sure there’s no extra hardware connected to your system except your installation media.

Solution 2: System Restore

If you’ve made any changes prior to the installation of the Windows again, the error can be caused due to it. In such a case, you’ll have to make use of System Restore. It is a Windows feature that lets the users restore their system to a point prior to the emergence of the error. Therefore, use system restore and then try to install Windows. Here’s how to restore your system:

Solution 3: Deleting Partitions

Before you proceed and implement this solution, please make sure you’ve backed up any important information that is stored on your system. The error can sometimes be caused by bad partitions in which case you’ll have to delete the partitions and then install the Windows. Here’s how to delete your partitions:

Solution 4: Connect your Hard Disk to a different PC

Another thing you can do to resolve the issue is unplugging your hard disk from your system and connecting it to a different computer. Besides the error, this is something you should if you can’t see any partitions when asked for the System partition. Once connected to a different system, set up NTFS partition using Windows Installer and then go through the installation process.

Solution 5: Faulty Hardware

Lastly, if the above-mentioned solutions didn’t work for you, there’s only one possible reason for this. Something in your PC is corrupted or fried. In such a case, you’ll have to replace the hardware and then try to install your Windows.

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