How to Fix Windows 11 Installation Error 0xc1900101?

Here is how to solve the problem number 0xc1900101 on Windows 11 Installation Assistant in detail. Microsoft has released the Windows 11 Installation Assistant, which makes it simple for users to update to the next operating system, Windows 11.

While it is a simple process to install Windows 11 on your computer, some customers have reported problems. The Windows 11 Installation Error 0xc1900101 is one such problem that prohibits you from installing Windows 11 on your computer.

This guide is for you if you are seeing the same issue number while using Windows 11 Installation Assistant. We will demonstrate various approaches in this article to assist you in resolving the problem. 

Other Explanations for the Appearance of This Error Code Include:

  • If you have a third-party antivirus program installed on your computer, it may prevent you from upgrading to Windows 11. Disable or remove your third-party antivirus suite if the case applies.
  • If you don't have enough space on your hard drive to update Windows, you can get the error number 0xc1900101.
  • This problem can also be caused by out-of-date drivers.
  • Outdated BIOS might cause this error code to appear. As we all know, the new Windows 11 operating system has various installation requirements. As a result, you'll need to upgrade your BIOS to the most recent version to fix the problem.

Windows 11 Installation Assistant Error Code 0xc1900101

Here are several ways to repair the 0xc1900101 problem number when using Windows 11 Installation Assistant:

  • Make sure your third-party drivers are up to date.
  • Disable any third-party antivirus software.
  • Make sure your computer has enough storage space.
  • Remove any unnecessary hardware.
  • The CHKDSK command can be used to repair hard disc faults.
  • DISM scan can be used to restore and repair system files.
  • In a Clean Boot State, troubleshoot.
  • BIOS must be updated.
  • Clean Install Windows 11 on your computer.
  • Microsoft's Windows 11 Disk Image (ISO) file may be used to upgrade to Windows 11.

Make Sure Your Third-Party Drivers are Up to Date.

This problem can be caused by out-of-date or malfunctioning third-party drivers during the update process. As a result, before using the installation wizard to install Windows 11, check sure all of your drivers are up to current.

By heading to Settings > Windows Update > Advanced options > Optional updates, you may manually check for available driver updates. If your drivers have updates available, download and install them.

You may also get the newest drivers by going to the manufacturer's official website. Aside from that, there are various free third-party driver updaters that may help you install the most recent drivers on your PC automatically.

Make Sure Your Computer has Enough Storage Space.

When utilising Windows 11 Installation Assistant, this upgrade problem might be caused by a lack of disc space. Because Windows 11 will be downloaded to your system drive and installed on the same partition, you'll need adequate storage space to install it.

It can also result in error code 0xc1900101 if you are running out of disc space. As a result, ensure sure you have enough disc space to install Windows 11 using the Windows 11 Installation Assistant. To avoid this problem, you need to have at least 100 GB of free storage space.

The CHKDSK Command can be Used to Repair hard Disc Faults.

When using Windows 11 Installation Assistant, hard drive failures might also generate error number 0xc1900101. So, first, try to repair the drive error, and then see if the problem has been repaired. You can use CHKDSK, a Windows built-in disc repair program.

To check and rectify issues on System Drive, open Command Prompt as an administrator and type chkdsk/f C: (C). After you've run the command, restart your device and use Windows 11 Installation Assistant to finish the update.

BIOS must be Updated

If none of the previous alternatives works, you can attempt upgrading your BIOS to fix the problem. This problem might be caused by out-of-date BIOS firmware, and we know what Windows 11's minimal installation requirements are.

If your BIOS firmware is out of the current, it may cause problems with the upgrading. So, if that's the problem, you should be able to fix it simply by changing the BIOS. This BIOS update instruction will assist you in doing so. Check to see if this resolves the issue. If not, go to the next possible repair.


The 0x80070002 error code is a Windows update error code. It can be caused by Registry file corruption, a third-party antivirus blocking it, or if the date and time are out of sync. Execute the Windows Update Troubleshooter, run an SFC scan command, or reset Windows Update components to repair this issue. Follow this tutorial to solve Windows Update problem number 0x80070002 for more information.

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