Clean Boot your PC. The Windows Installer program might have failed to access some of the important system components due to conflicts with third-party applications or services. Using the Clean Boot method, ensure only critical Windows services start at the system boot interval. For Windows 10/ 8.1/ 8: Right-click the Taskbar, select Task Manager if you’re using Windows 10, or Start Task.

1. Tip: Although Disk Cleanup is a wonderful built-in tool, it will not completely clean up all of the temporary files on your computer. Other programs that you frequently use such Microsoft Office, Firefox, Chrome, Live Messenger, and hundreds of other programs are not cleaned up with Disk Cleanup (including some Microsoft Corporation programs).
2. Do you get the following windows installer errors on your computer? It is easy to fix them by following the steps outlined below. The Windows Installer Service could not be accessed. Windows Installer Service could not be started.
3. If you’ve got Windows 10 installation problems, you’ve come to the right place. Side note: If the latest version of Windows 10 is experiencing widespread problems, you may also want to wait. The April 2018 update alone had the potential to wipe all the data from your desktop or break Chrome.
4. Windows Installer Errors. Here are some general troubleshooting techniques that can help get you locked and loaded. Close Discord in the system tray and make sure all Discord processes are terminated. (Sometimes stray processes can hide in your system tray or your task manager - double check those!).

Do you get the following windows installer errors on your computer? It is easy to fix them by following the steps outlined below.

Here is the solution to fix the windows installer errors. Note that the error messages usually appears because of a failed installation of MSI Package or disabled Windows Installer service.

How to fix windows installer errors ?

Windows Installer Errors

To fix the windows installer error, simply un-register Windows Installer, and then re-register it. To do so, carry out the following steps:

Fix Windows Installer Error 1605

• Click “Start” >> Run
• Type msiexec /unreg in the Open box, and press ENTER

Fix Windows Installer Problems

• Again click Start >> Run
• Type msiexec /regserver in the Open box, and press ENTER

That is all! Does that resolve your windows installer error and solve your problem?

Hi Meagan,

Welcome and thank you for posting your query in Microsoft Community.

Fix Windows Installer Issues

As per your description of the issue, I would suggest you to try clean boot and check which third party software's are creating this issue.

A clean boot is performed to start Windows by using a minimal set of drivers and startup programs. This helps eliminate software conflicts that occur when you install a program or an update or when you run a program in Windows. You may also troubleshoot or determine what conflict is causing the problem by performing a clean boot. You must log on to the computer as an administrator to be able to perform a clean boot. Your computer may temporarily lose some functionality when you perform a clean boot. When you start the computer normally, the functionality returns. However, you may receive the original error message, or experience the original behavior if the problem still exists. If the computer is connected to a network, network policy settings may prevent you from following these steps.

Follow: https://support.microsoft.com/en-us/kb/929135

Disclaimer: After troubleshooting, refer to this section 'How to reset the computer to start normally after clean boot troubleshooting'.

Hope this information helps. Please post us if you need any further assistance with Windows.

Free Fix Windows Installer Errors

Thank you.