Here’s a step-by-step guide on how to fix Windows installation errors by modifying the environment configurations:

Method 1: Run the System File Checker (SFC) and DISM

• Open Command Prompt as administrator.

• Type sfc /scannow to run the System File Checker (SFC).

• If any errors are found, it will attempt to repair them.

• Restart your computer.

If SFC is successful, you can use the Deployment Image Servicing and Management (DISM) tool to fix installation errors:

dism /online /cleanup-image /restorehealth

This command will scan for and fix any corruption in the image.

Method 2: Update Windows Installation Media

• Ensure your Windows installation media is up-to-date.

• Restart your computer from the installation media.

If you’re using an ISO file, follow these steps:

isoextract /d /g /j "WindowsInstallationMedia.iso" "C:\Windows"

This command extracts the ISO file and saves it to a folder named Windows.

Method 3: Roll Back Installation

• Go to Control Panel > System and Security > System.

• Click on “System Protection” and then click on “Event Viewer”.

• Look for any errors or warnings related to installation.

• If you find errors, right-click on the error and select “Roll Back”.

• Follow the prompts to roll back your Windows installation.

Method 4: Disable Automatic Updates

• Go to Control Panel > System and Security > Services.

• Locate the Windows Update service (wuauserv).

• Click on it and set it to disabled (or run as administrator).

This will prevent Windows from updating during the installation process, which can help resolve installation errors.

Method 5: Disable User Account Control (UAC)

• Go to Control Panel > System and Security > User Accounts.

• Click on “User Account Control” and then click on “Change advanced setup”.

• In the “Security settings” tab, uncheck the box next to “Disable all other user account control features”.

This will disable UAC during the installation process, which can help resolve issues related to Windows.

Method 6: Run a System Restore

• Go to Control Panel > System and Security > System.

• Click on “System Protection” and then click on “Event Viewer”.

• Look for any errors or warnings related to system restore.

• If you find errors, right-click on the error and select “Restore Windows”.

• Choose a point in time when your computer was working correctly.

This will attempt to roll back your system to that point in time, which can help resolve installation errors.

Method 7: Reinstall Windows from a Bootable USB Drive

• Download a bootable Windows installation USB drive.

• Insert the USB drive and restart your computer.

• Select “Install Now” and follow the prompts to reinstall Windows.

This method will restore your system to its original state, which can help resolve installation errors.

By following these steps, you should be able to fix common Windows installation errors by modifying environment configurations like System File Checker (SFC), Deployment Image Servicing and Management (DISM), updating Windows installation media, rolling back installation, disabling automatic updates, disabling UAC, running a system restore, or reinstalling Windows from a bootable USB drive.