A complete step-by-step guide for upgrading from Windows 10 to Windows 11 using Windows Update, Installation Assistant, an ISO file, or bootable USB media — without losing your files.
🖥 Windows 10 → 11✅ Compatibility check💾 Backup tips🛠 Troubleshooting included
Overview
Before You Upgrade from Windows 10 to Windows 11
Upgrading Windows 10 to Windows 11 is usually straightforward when the PC meets Microsoft’s hardware requirements. The safest route is to use Windows Update, because it checks device compatibility, drivers, and upgrade readiness before offering Windows 11.
Before starting, make sure your Windows 10 installation is activated, updated, and running normally. Do not begin the upgrade if the system is already unstable, has disk errors, or is missing important drivers.
ℹ️
Important in 2026
Mainstream support for Windows 10 ended on October 14, 2025. Windows 10 PCs still work, but Microsoft recommends moving eligible devices to Windows 11 for continued security and feature updates. Some Windows 10 devices may also be covered by Extended Security Updates, depending on edition and enrollment.
Best for most usersWindows Update. It is the safest and most automatic option.
Best when update is not offeredWindows 11 Installation Assistant. Good for compatible PCs.
Best for manual upgradeWindows 11 ISO. Useful when you want a local installer.
Best for clean installBootable USB drive. Use when you want to erase and reinstall.
Compatibility
Windows 11 Upgrade Requirements for Windows 10 PCs
Not every Windows 10 computer can be upgraded to Windows 11. Your PC must meet the official Windows 11 minimum requirements, including a supported processor, TPM 2.0, Secure Boot capability, enough RAM, enough storage, and compatible graphics.
Component
Minimum requirement
What to check
Processor
1 GHz or faster, 2 or more cores, supported 64-bit CPU
Settings → System → About
RAM
4 GB or more
Settings → System → About
Storage
64 GB or larger storage device
File Explorer → This PC
Firmware
UEFI with Secure Boot capability
System Information → BIOS Mode / Secure Boot State
TPM
TPM version 2.0
Run tpm.msc
Graphics
DirectX 12 compatible graphics with WDDM 2.0 driver
Run dxdiag
Display
720p display larger than 9 inches
Display settings
Internet
Internet connection required for updates and setup steps
Network settings
⚠️
Unsupported hardware warning
Installing Windows 11 on a PC that does not meet the minimum requirements is not recommended. Unsupported devices may have compatibility problems and may not be entitled to receive updates.
How to Check If Your Windows 10 PC Can Run Windows 11
The easiest way is to use Microsoft’s PC Health Check app. It tells you whether your PC is eligible for Windows 11 and identifies missing requirements such as TPM 2.0, Secure Boot, unsupported CPU, or insufficient storage.
Recommended
Check compatibility with PC Health Check
Download and install the PC Health Check app from Microsoft.
Open PC Health Check.
Under Introducing Windows 11, click Check now.
Read the result carefully. If the PC is not eligible, click See all results to identify the failed requirement.
Check TPM 2.0 manually
Press Win + R.
Type tpm.msc and press Enter.
Look for Status: The TPM is ready for use.
Check Specification Version. It should show 2.0.
Check Secure Boot manually
Press Win + R.
Type msinfo32 and press Enter.
Find BIOS Mode. For Windows 11, it should normally be UEFI.
Find Secure Boot State. It should be On, or the firmware should at least support Secure Boot.
💡
Tip
On some PCs, TPM is disabled in BIOS/UEFI even though the hardware supports it. Intel systems may call it PTT; AMD systems may call it fTPM. Enable it only if you understand your firmware settings.
Safety
Back Up Your Files Before Upgrading to Windows 11
A normal in-place upgrade keeps your personal files, installed programs, and most settings. However, any major operating system upgrade can fail because of driver conflicts, disk errors, power loss, or third-party security software. Back up important data before you begin.
Copy personal files Back up Desktop, Documents, Pictures, Videos, browser exports, and project folders to an external drive or cloud storage.
Save license keys Make sure you can reinstall paid programs if something goes wrong.
Create a restore point Use System Protection for a quick rollback point, though it is not a replacement for a real backup.
Create a full system image For the safest result, make a complete disk image with Windows Backup or another trusted backup tool.
Free up disk space Keep at least 25–30 GB free on the system drive to reduce installation errors.
✅
Best practice
Connect the laptop to AC power, disable sleep temporarily, and do not shut down the PC while Windows 11 is installing.
Method 1
Upgrade Windows 10 to Windows 11 Using Windows Update
Windows Update is the best method for most users. It checks whether Windows 11 is ready for your device and offers the upgrade only when the PC is eligible.
Safest option
Install Windows 11 from Windows Update
Click Start and open Settings.
Go to Update & Security → Windows Update.
Click Check for updates.
If Windows 11 is offered, click Download and install.
Accept the license terms.
Wait while Windows downloads and prepares the upgrade.
Restart the PC when prompted and let the installation finish.
The PC may restart several times. This is normal. After the upgrade finishes, sign in, check your files, and let Windows Update install any remaining drivers or cumulative updates.
ℹ️
If Windows 11 is not offered
Your PC may not meet the requirements, or Microsoft may not have validated the upgrade for your specific hardware. Use PC Health Check first, then consider the Installation Assistant only if the PC is compatible.
Method 2
Upgrade with the Windows 11 Installation Assistant
The Windows 11 Installation Assistant is useful when your PC is compatible but Windows Update has not offered Windows 11 yet. It performs an in-place upgrade and normally keeps files, apps, and settings.
Right-click the downloaded file and select Run as administrator.
Wait while the tool checks your PC.
Accept the license terms.
Let the tool download and install Windows 11.
Restart the PC when prompted.
⚠️
Do not force the upgrade blindly
If the tool says your PC does not meet Windows 11 requirements, fix the listed issue first. Forcing Windows 11 onto unsupported hardware is risky and not recommended.
Method 3
Upgrade Windows 10 to Windows 11 Using an ISO File
A Windows 11 ISO file is a complete installation image. You can mount it inside Windows 10 and run setup directly. This is useful if you want to keep a local copy of the installer or upgrade several compatible PCs.
Advanced users
Run setup from a mounted Windows 11 ISO
Download the Windows 11 ISO from Microsoft’s official download page.
Right-click the ISO file and choose Mount.
Open the mounted DVD drive in File Explorer.
Double-click setup.exe.
Choose whether setup should download updates, drivers, and optional features.
On the Choose what to keep screen, select Keep personal files and apps.
Click Install and wait for Windows 11 to finish installing.
🚫
Check this screen carefully
If the installer does not offer Keep personal files and apps, stop and do not continue until you understand why. Continuing with the wrong option can remove installed programs or personal data.
Method 4
Install Windows 11 from a Bootable USB Drive
A bootable USB drive is best for a clean installation, not a simple upgrade. It can be useful when Windows 10 is broken, heavily modified, infected, or too cluttered. A clean install usually removes existing programs and may erase the system partition.
Clean install
Create and use Windows 11 installation media
Back up all important files from the PC.
Download the Windows 11 Media Creation Tool from Microsoft.
Insert an empty USB flash drive with at least 8 GB capacity.
Use the tool to create installation media.
Restart the PC and boot from the USB drive.
Follow the Windows Setup wizard.
Choose the correct edition and installation target.
⚠️
USB warning
Creating installation media erases the selected USB drive. Make sure there are no important files on it before continuing.
Post-install
What to Do After Upgrading to Windows 11
After the first successful login, spend a few minutes checking drivers, activation, privacy settings, and available updates. This helps prevent small upgrade issues from becoming daily annoyances.
Open Settings → Windows Update and install all available updates.
Open Device Manager and check for unknown devices or driver errors.
Go to Settings → System → Activation and confirm Windows is activated.
Check audio, Wi-Fi, Bluetooth, printer, touchpad, webcam, and GPU drivers.
Open your most important programs and verify they still work.
Review privacy settings, default apps, startup apps, and taskbar preferences.
Run Disk Cleanup only after you are sure you do not want to roll back.
ℹ️
Do not delete Windows.old too early
The Windows.old folder is needed if you want to return to Windows 10. Delete it only when Windows 11 is working correctly and you no longer need the rollback option.
Rollback
How to Go Back to Windows 10 After Upgrading
If Windows 11 causes problems, you may be able to roll back to Windows 10 for a limited time after the upgrade. This option is available only if the previous Windows installation files are still present.
Recovery option
Return to Windows 10 from Settings
Open Settings.
Go to System → Recovery.
Find Go back.
Click Go back and follow the instructions.
Keep the PC connected to power until the rollback finishes.
If the Go back button is unavailable, the rollback files may have been removed. In that case, you need a full backup image or a clean Windows 10 installation.
Fixes
Troubleshooting Windows 11 Upgrade Problems
Most Windows 11 upgrade failures are caused by compatibility blocks, lack of free space, external devices, old drivers, disk errors, or third-party antivirus software. Try the fixes below before running the installer again.
Problem
Likely cause
What to do
Windows 11 is not offered
Compatibility hold or unsupported hardware
Run PC Health Check and install all Windows 10 updates
TPM 2.0 error
TPM disabled in BIOS/UEFI
Enable Intel PTT or AMD fTPM if supported
Secure Boot error
Legacy BIOS mode or Secure Boot disabled
Check msinfo32 and firmware settings
Not enough space
System drive is nearly full
Free 25–30 GB, remove temporary files, move large files
Installation freezes
Driver conflict or external device
Disconnect nonessential USB devices and update drivers
Error during setup
Corrupted system files or update cache
Run sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth
General fixes before retrying the upgrade
Disconnect printers, scanners, external drives, docks, and nonessential USB devices.
Temporarily uninstall third-party antivirus or system tweaking tools.
Update Windows 10 completely before attempting the upgrade.
Update BIOS/UEFI and chipset drivers from the PC or motherboard manufacturer.
Run chkdsk, sfc, and DISM if Windows has system errors.
Make sure the system drive has enough free space.
FAQ
Frequently Asked Questions About Upgrading Windows 10 to Windows 11
Q
Is the Windows 10 to Windows 11 upgrade free?
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Yes, the upgrade is free for eligible Windows 10 PCs that meet Windows 11 requirements and are properly activated. Internet service provider fees may still apply for downloading installation files.
Q
Will upgrading to Windows 11 delete my files?
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A normal in-place upgrade should keep personal files, apps, and most settings. However, you should still create a backup before upgrading because installation failures, disk errors, or wrong setup choices can cause data loss.
Q
How long does the Windows 11 upgrade take?
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It depends on SSD/HDD speed, processor performance, internet speed, and the amount of installed software. On modern SSD-based PCs, the process is often much faster than on older hard drive systems.
Q
Can I upgrade an unsupported PC to Windows 11?
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Microsoft does not recommend installing Windows 11 on devices that do not meet the minimum requirements. Unsupported PCs may experience compatibility issues and may not be entitled to updates.
Q
Do I need a Microsoft account to upgrade?
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Windows 11 Home and Windows 11 Pro for personal use require an internet connection and a Microsoft account during initial device setup. Requirements may vary depending on edition, region, and setup path.
Q
Can I return to Windows 10 after installing Windows 11?
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Yes, but only for a limited time and only if the rollback files are still available. Open Settings → System → Recovery and use Go back. If that option is gone, you need a full backup image or a clean Windows 10 installation.
Summary
Best Way to Update Windows 10 to Windows 11
For most users, the best way to upgrade from Windows 10 to Windows 11 is Windows Update. It is safer because it checks compatibility and offers the upgrade only when Windows 11 is ready for your device. If your PC is compatible but the update is not offered, the Windows 11 Installation Assistant is the next best option.
🏁 Bottom Line
Check compatibility first, back up your files, install all Windows 10 updates, and use Settings → Update & Security → Windows Update. Avoid forced upgrades on unsupported hardware unless you fully understand the risks and have a complete backup.