Windows 11 v24H2 installation fails? Here are the most effective methods to fix the issue.

If you're attempting to install Windows 11 version 24H2 and encounter installation failures, rest assured you're not alone. From October 2024 to April 2025, numerous users have reported issues when upgrading their systems to Windows 11 v24H2, encountering various installation error codes such as 0x8007001f, 0x800f0922, 0XC1900101, or 0xc1900201.

Common Windows 11 v24H2 Upgrade Problems/Errors:

• There were problems installing some updates, but we’ll try again later – 0x800f0922
• There were problems installing some updates, but we’ll try again later – 0x8007001f
• Windows 11 24H2 download or installation progress stuck at a certain percentage (e.g., 0%, 60%, 99%)
• We couldn’t complete the updates. Undoing changes.
• We couldn't install Windows 11.
• The installation failed in the FIRST_BOOT phase with an error during MIGRATE_DATA operation – 0x8007001F – 0x3000D
• The installation failed in the SAFE_OS phase with an error during BOOT operation – 0xC1900101 – 0x20017
• We couldn’t update system reserved partition – 0xc1900201

Common Causes of Windows 11 24H2 Installation Failures:

• 0x800f0922: The 'App Readiness' service is disabled or not running.
• 0x8007001f: Existence of Unknown User profiles.
• 0xC1900101 – 0x20017: Incompatible or outdated drivers, old BIOS version, disk or system files corruption.
• 0xc1900201: Insufficient space on the system reserved partition.

This guide provides necessary steps and proven solutions to resolve Windows 11 v24H2 installation issues based on expert experience.

Preliminary Steps to Avoid Installation Issues:

1. Download, install, and run the Windows PC Health Check to verify if your computer fulfills the requirements to install Windows 11 24H2.
2. Ensure adequate free disk space is available. Windows 11 requires at least 64 GB of free space. Use Disk Cleanup to free up space.
3. Update all device drivers, particularly for the Chipset and Graphics card (GPU).
4. Utilize the HVCIScan tool to identify incompatible drivers.
5. Consult with your hardware vendor for any available BIOS updates.
6. Disconnect nonessential external hardware, such as docks and USB devices.
7. Disable BitLocker or any other encryption if enabled.
8. Before restarting to install the update, disconnect from the network (e.g., unplug the Ethernet cable or disable the Wi-Fi adapter).

Notes:

1. Version 23H2 must be installed to upgrade to 24H2.
2. Attempt updating your system after each method. If the update fails again, proceed to the next method.

Method 1. Start the App Readiness Service.

1. Open Services (services.msc) and ensure the "App Readiness" service is not disabled. If it is, modify its properties to set "Startup type" to Manual, and Start the service.
2. Attempt updating your system again. If the installation fails, continue reading.

Method 2. Disable Windows Sandbox on Windows 11 Pro.*

* Note: Skip this step if you're using Windows 11 Home.

1. Search for "features" and select Turn Windows features on or off.
2. Uncheck Windows Sandbox and click OK.
3. Restart your PC and attempt the update again.

Method 3. Delete Unknown User Profiles.

1. Press Win + R keys to open the RUN command box.
2. Type "SystemPropertiesAdvanced" and hit OK.
3. Under 'User Profiles,' click Settings.
4. Select and delete the "Account Unknown" profile(s), preserving only the Default and user profile(s).
5. Restart the PC and attempt the update again.

Method 4. Free Up Space on the System Reserved Partition.

1. Open Command Prompt as Administrator and enter the following commands:
   • mountvol Y: /s
   • Y:
   • cd EFI\Microsoft\Boot\Fonts
   • del *.ttf
2. Close the Command Prompt and try updating your system.

Method 5. Repair the System Drive and System Files.

1. Open Command Prompt as Administrator and run the following command to check and repair drive C:
   • chkdsk /F

   Note: When prompted to schedule a check at the next restart, press "Y".

2. Restart your computer to let the check disk run.
3. After booting into Windows, open Command Prompt as Administrator again and execute:
   • DISM.exe /Online /Cleanup-image /Restorehealth
4. Once the DISM operation completes, run:
   • sfc /scannow
5. Wait for the System File Checker to repair Windows System Files.
6. Restart your computer and try installing the update.

Method 6. Upgrade Windows 11 to Version 24H2 Using the Installation Assistant.

1. Visit the Windows 11 download page to download the Windows 11 Installation Assistant.
2. Open the "Windows11InstallationAssistant.exe" to proceed with the Windows upgrade.

Method 7. Upgrade to Version 24H2 from an ISO File.

Step 1. Download Windows 11 in an ISO File.

1. Access the Windows 11 download page and click Download Tool Now to download the Media Creation Tool.
2. Execute the downloaded file and Accept the License Terms.
3. Maintain default settings for Language and Version and click Next.
4. In the "Choose which media to use" screen, select ISO file and click Next.
5. Save the 'Windows.iso' file to your desktop and click Save.
6. The Media Creation Tool will commence downloading Windows 11 in an ISO file.
7. After the download completes, close the Media Creation Tool.

Step 2. Upgrade Windows 11 to v24H2 Using the ISO File.

1. Disconnect your computer from the Internet, or enable "Airplane mode" on a laptop.
2. Disable or temporarily uninstall any third-party antivirus.
3. Right-click on the "Windows.iso" file (on your desktop) and select Mount.
4. Double-click the Setup application to initiate the upgrade.
5. Click Install on the initial screen, then click Accept.
6. Verify that Keep personal files and apps is selected and click Install to repair and upgrade your system without data loss.

Method 8. Reinstall Current Version of Windows 11.

1. Navigate to Start > Settings > System > Recovery, and click Reinstall now next to "Fix problems using Windows update".
2. Click OK, then wait for Windows Update to download and install a repair version of Windows 11. Upon completion, restart your computer.
3. After restarting, return to the Windows Update center to install any further updates.

Method 9. Reset Windows 11.

Resetting Windows to its default state is another method to resolve Windows 11 v24H2 upgrade issues. For detailed instructions, refer to this article: How to Reset Windows 11.

Method 10. Clean Install Windows 11.

The final solution to address Windows 11 24H2 upgrade problems is to perform a clean installation of Windows 11. Consult method-1 in this article for guidance: How to Clean Install Windows 11.

* Important: A clean installation will erase all files and settings during the process. Ensure to backup all important data to another storage media (e.g., external USB drive) before proceeding.

Summary

In summary, resolving Windows 11 v24H2 installation failures involves starting essential services, managing disk space, updating drivers, and utilizing official Microsoft tools for troubleshooting. In some cases, more drastic measures like resetting or clean installing Windows may be necessary. Ensure all preliminary checks and steps are completed before implementing advanced solutions.

We hope this guide assists you in resolving your Windows 11 v24H2 installation issues. Please share your experience or feedback in the comments section below.

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Konstantinos Tsoukalas

Konstantinos is the founder and administrator of Repairwin.com. Since 1995 he works and provides IT support as a computer and network expert to individuals and large companies. He is specialized in solving problems related to Windows or other Microsoft products (Windows Server, Office, Microsoft 365, etc.).

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