
You can uninstall the software manually from the Control panel. Installing the latest software without removing the earlier one from your Windows 10 system can cause the issues. So, first, verify if you are the earlier version of the software is already installed, then first uninstall it and after that try to install the new one.

It might happen you are getting the error Windows installer not working because the software you are trying to install is already installed. Solution 1: Check if the Earlier Version of the Software is Already Installed Solution 6: Reinstall Windows Installer.Solution 5: Re-Register Microsoft Installer Service.Solution 4: Check the Installer Service Is Running Properly.Solution 3: Try to Restart the Windows Installer Service.Solution 2: Run Program Install & Uninstall Troubleshooter.Solution 1: Check if the Earlier Version of the Software is Already Installed.
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So, these are some of the common cause for the Windows 10 problem now just head to the fixes: How to Fix Windows Installer Not Working Windows 10 Problem?

But sometimes due to unexpected reasons, the Windows installer has stopped working and as a result, you start receiving Windows installer not working properly Windows 10 error message.
