An in-place upgrade on Windows 10 reinstalls the operating system while keeping all your personal files, settings, and installed applications intact. I use this method to fix system corruption, resolve persistent update failures, and repair broken Windows components without wiping the drive. You just need a Windows 10 ISO file that matches your current system language.
Applies to: Windows 10 (all versions including 22H2) | Last updated: April 16, 2026
Key Takeaways
- An in-place upgrade repairs Windows 10 by reinstalling core system files while preserving your files, apps, and settings — no data loss.
- The ISO file language must exactly match your current Windows installation language, or the “Keep personal files and apps” option will not appear.
- Disable third-party antivirus and unplug unnecessary peripherals before starting to prevent installation conflicts.
- The process takes 30 minutes to 2 hours depending on whether you have an SSD or HDD.
Quick Steps
- Download the Windows 10 ISO file matching your system language.
- Disable third-party antivirus and unplug unnecessary peripherals.
- Right-click the ISO file and open it with Windows Explorer to mount it.
- Double-click setup.exe inside the mounted drive.
- Select “Not right now” for updates, then click Next.
- Accept the license terms and verify “Keep personal files and apps” is selected.
- Click Install and wait for the process to complete.
- After restarting, go to Settings > Update & Security > Check for updates.
What Is an In-Place Upgrade?
An in-place upgrade is essentially a repair installation of Windows 10. It reinstalls the operating system overtop of your existing installation, replacing corrupted or damaged system files while leaving your personal files, installed programs, and user settings untouched.
This is different from a clean install, which wipes everything and starts fresh. If you want to keep your apps and data but need to fix persistent system problems, an in-place upgrade is the way to go. For a full clean reinstall that preserves your files but removes apps, see my guide on how to reinstall Windows without losing data.
When Should You Use an In-Place Upgrade?
I recommend an in-place upgrade when you are dealing with any of the following issues:
- Windows Update keeps failing or getting stuck
- System file corruption that SFC and DISM cannot repair
- Slow performance or random freezes after a problematic update
- Blue screen errors (BSOD) that started without hardware changes
- Start menu, taskbar, or other core Windows features not working properly
Prerequisites
Before starting, make sure you have the following sorted:
- Windows 10 ISO file — Download the latest version from Microsoft. I have a full guide on how to download the Windows 10 ISO file. The ISO language must match your current Windows installation language exactly.
- Disable antivirus — Third-party antivirus software can interfere with the upgrade process. Temporarily disable it before starting.
- Unplug peripherals — Disconnect any external devices except your keyboard and mouse.
- Backup your files — While the upgrade preserves your data, I always recommend having a backup on an external drive or cloud storage as a safety net.
How to Perform the In-Place Upgrade
Mount the ISO File and Run Setup
Once you have the ISO file downloaded, right-click on it and select Open with > Windows Explorer. This mounts the ISO as a virtual drive in File Explorer so you can access its contents.
Inside the mounted drive, double-click setup.exe to launch the Windows 10 Setup wizard. If you see a User Account Control prompt, click Yes to continue.
Configure Setup Options
On the first screen of the setup wizard, click Change how Windows Setup downloads updates and select Not right now. This speeds up the process by skipping the update download during installation. Click Next to continue.
The setup will run compatibility checks on your system. Once finished, you will see the license terms — click Accept to proceed.
Verify Settings and Install
After the checks complete, you will see the “Ready to install” screen. This is the most important step — make sure it says Keep personal files and apps underneath the install button.
If you do not see the option to keep your files and apps, it is almost always because the ISO file language does not match your current installation. For English, there are two versions — US English and standard English (UK). Download the correct one and try again.
When everything looks correct, click Install. Your PC will restart several times during the process. This takes anywhere from 30 minutes on an SSD to up to 2 hours on a traditional hard drive. Let it run and do not interrupt the process.
Post-Upgrade Steps
Once the upgrade finishes, you will be taken to your desktop (you may need to sign in first). The first thing I recommend doing is checking for Windows updates.
Go to Settings > Update & Security > Windows Update and click Check for updates. Let Windows download and install any available updates, then restart your computer.
If any of your hardware devices are not working correctly after the upgrade, you may need to reinstall drivers. I recommend using Snappy Driver Installer Origin to quickly identify and install any missing drivers.
Troubleshooting
“Keep personal files and apps” option is missing: This happens when the ISO language does not match your installed Windows language. Download the ISO again with the correct language selected. If you are performing the download on the same PC, leave the “Use the recommended options for this PC” checkbox enabled.
Installation is taking a very long time: On a traditional hard drive, the process can take up to 2 hours. Do not interrupt it. If you are still on an HDD, consider upgrading to an SSD for significantly faster performance.
Setup fails or rolls back: Make sure you have disabled third-party antivirus, unplugged unnecessary peripherals, and have at least 20 GB of free disk space. Try downloading a fresh ISO file and running the process again.
Moving to Windows 11
If your PC supports it, you might also consider upgrading from Windows 10 to Windows 11 instead. I have a full guide on how to upgrade Windows 10 to Windows 11 using the Update Assistant. Once you are on Windows 11, I recommend using Winhance to customize and optimize your new installation.
Frequently Asked Questions
What is the difference between an in-place upgrade and a clean install?
An in-place upgrade reinstalls Windows 10 while keeping your personal files, installed applications, and settings. A clean install wipes everything from the drive and gives you a fresh copy of Windows with no apps or personal files.
Will I lose my files during an in-place upgrade?
No. The in-place upgrade process specifically preserves your personal files and installed apps. However, I always recommend backing up important data before any major system change, just in case something unexpected happens.
Do I need a product key to perform an in-place upgrade?
No. If your Windows 10 installation is already activated, the in-place upgrade will retain your activation. You will not be prompted to enter a product key during the process.
How long does the in-place upgrade take?
The process typically takes between 30 minutes and 2 hours. Systems with an SSD will finish much faster than those running on a traditional hard drive.
