I'm trying to install Windows 11 from Windows Update, but I keep getting the error "Unable to install Windows 11 0xC1900101". After restarting several times since the installation started, it displays: "Attempting to resume installation and Undo changes made to your computer. Then, I get error 0xC1900101 on Windows Update."
Have you encountered the Windows 11 installation failure error code 0xC1900101 during an upgrade? Many users receive error codes such as 0xC1900101 - 0x20017, 0xC1900101 - 0x30018, and 0xC1900101 - 0x2000c during the Windows 11 installation process, stopping them from installing Windows 11. In this article, we will explain what the Win11 update 0xC1900101 error is, what causes the Win11 0xc1900101 error code, and share possible fixes for the 0xc1900101 error. Hopefully, this article helps you fix the 0xC1900101 issue when installing Windows 11.
Errors starting with 0xC1900101 are usually driver errors. Common error codes of 0xC1900101 are shown below. 0xC1900101 typically occurs during the installation of Windows 11 updates.
There are several reasons why error code 0xC1900101 occurs during a Windows 11 upgrade. Some common causes are as follows:
Next, let us share nine methods to resolve the Win11 installation failure error code 0xC1900101 efficiently.
Before getting down to any repairs, to avoid damage or loss of important data due to improper operation during troubleshooting, it is recommended that you back up your current operating system and files in drive C. It is the most effective way to prevent data loss and allow you to restore Windows 11 to a previous date.
For this, you can try iBeesoft DBackup, an excellent computer backup tool. It allows you to back up your system, files, disks, and partitions to multiple locations, such as internal/external hard drives, NAS devices, USB drives, and network locations. Furthermore, iBeesoft Disk Partition Wizard can help you create bootable media in case of a system failure or a hard drive crash.
After backing up your important files, you can try the methods below to resolve the Win11 installation failure error code 0xC1900101.
To upgrade to Windows, you need enough storage on your disk for the installation. At least 16 GB of free space to upgrade to a Windows 32-bit operating system, and at least 20 GB to upgrade to a 64-bit operating system.
To check how much hard drive storage is available on your computer, select File Explorer from the taskbar, or press the Windows key + E > select "Computer" or "This PC" > view it under "Hard Disk Drives" or "Devices and Drives."
If multiple drives are listed, select the system drive with the Microsoft Windows logo above its icon. The amount of available space will be displayed below that drive.
Tip: If your C drive is full, here's the solution. Alternatively, you can use iBeesoft Disk Partition Wizard to resize it for free without losing data.
An upgrade may also result in a 0xc1900101 error if your PC does not meet the minimum hardware requirements for Windows 11. Therefore, please refer to the following list to make the replacement.
As the basic Windows 11 configuration requirements above show, Microsoft has primarily relaxed CPU hardware requirements. More precisely, it has relaxed support for Intel Core X-series and Xeon W-series processors, and the Intel Core 7820HQ used in its own Surface Studio 2 has also been added to the support list. Unfortunately, the first generation of AMD Ryzen processors is not on the Windows 11 CPU support list.
If the drivers on your computer are outdated, it may cause the Win11 error code 0xC1900101. Ensure that your computer drivers are up to date and compatible with Windows 11.
CHKDSK is a built-in Windows utility for checking and repairing problematic drive errors. It can help repair hard drive problems such as bad sectors, lost clusters, and file system errors.
Remove any unnecessary hardware devices. These may include headphones, printers, scanners, speakers, USB flash drives, and external hard drives. If you are using a laptop and a docking station is plugged in, remove the docking station.
It's a good idea to ensure all critical updates are installed before attempting to upgrade Windows 11. It includes hardware driver updates for your device.
Third-party antivirus software can sometimes cause upgrade issues, so please use Windows Defender to protect your device during the upgrade. You can reinstall the software at any time after the upgrade, provided you have the installation media and all the necessary activation information.
To remove the antivirus application, go to Control Panel > Programs > Programs and Features. Select the program, and then select Uninstall. Select Yes to confirm.
Expired software may cause Windows upgrade problems, so please remove old or unnecessary applications. If you plan to reinstall the application later, make sure you have backed up the installation media and all necessary activation information before deleting it.
To uninstall the software, go to Control Panel > Programs > Programs and Features. Select the program, and then select Uninstall. Select Yes to confirm.
Corrupted Windows system files can also cause a 0xc1900101 error during upgrades. Using the System File Checker (SFC) to scan the protected system items and replace corrupted or missing ones is also an effective solution. To do this, you only need to enter "sfc/scannow" at the Command Prompt.
Tip: If SFC cannot fix some problems, you can also try the DISM command. It can be used to repair more complex system images and resolve startup issues. To run it, please type "DISM.exe /Online /Cleanup-image /Restorehealth".
Since Microsoft no longer supports Windows 10, it's essential to update your Windows PC to Windows 11 to improve your experience and protect your privacy. If you encounter the Windows 11 0xc1900101 error code, the solutions mentioned above will be very helpful.
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