Updating Windows 10 to Windows 11

To resolve the error code 0x800f020b you encountered while trying to update from Windows 10 to Windows 11, you can follow these steps:

1. Check for Updates Again: Go to Settings > Update & Security > Windows Update and click on Check for updates. Sometimes, simply retrying can resolve the issue.
2. Run Windows Update Troubleshooter: This built-in tool can help identify and fix problems with Windows Update. To access it, go to Settings > Update & Security > Troubleshoot > Additional troubleshooters and select Windows Update.
3. Ensure Enough Storage Space: Make sure you have enough free space on your device for the upgrade. You may need to delete unnecessary files or use Disk Cleanup to free up space.
4. Reset Windows Update Components: You can manually reset the Windows Update components by running commands in Command Prompt. Open Command Prompt as an administrator and execute the following commands:

      net stop wuauserv
      net stop cryptSvc
      net stop bits
      net stop msiserver
      net start wuauserv
      net start cryptSvc
      net start bits
      net start msiserver
   

5. Use the Installation Assistant: If the update is still not appearing, consider using the Windows 11 Installation Assistant from Microsoft's website. This tool can help you upgrade directly.
6. Check System Requirements: Ensure your PC meets the minimum requirements for Windows 11, such as TPM 2.0 and Secure Boot.
7. Review Error Logs: If the problem persists, check the Windows Update logs for more details on what might be causing the issue. You can use the SetupDiag tool to analyze the logs.

If these steps do not resolve the issue, you may want to consider contacting Microsoft support for further assistance.

References:

• Windows 10 upgrade to Windows 11 considerations
• "0x800F0818 - 0x20003" error during upgrade from Windows 10 to Windows 11

If your PC is indicated as fully Windows 11 compatible, the most successful method to upgrade to Windows 11 is to use the Windows 11 ISO.

You will need at least 40GB of free space on your C drive for the upgrade (this space will later be freed up automatically).

Please ensure you download the ISO in the same language as you use for the Windows UI, follow the steps, this is then not like re-installing Windows, it is just like an update and your personal files, settings and installed software will not be affected.

Click this link:

https://www.microsoft.com/software-download/windows11

to download the Windows 11 ISO

When the ISO file completes downloading

Disconnect from the Internet

Disconnect all external devices with the exception of a mouse or keyboard.

Temporarily disable any 3rd party Anti-virus you may have installed

Then, in Windows File Explorer, double click the ISO and then run Setup.exe and select the Install option.

Very Important - ensure you select the option to keep your files and apps.