Use the Windows Update Troubleshooter to fix Windows 11 Update errors.Ĭheck third-party drivers and download any updates. Download and install any available updates in Windows Update, including software updates, hardware updates, and some third-party drivers. For more info, see Free up drive space in Windows. Your device requires at least 16 GB of free space to upgrade a 32-bit OS, or 20 GB for a 64-bit OS. Make sure that your device has enough space. If these steps don’t work, see Resolve Windows upgrade errors for more detailed technical info. If you see any of these error codes, try the following steps first to fix the problem. 0xC1900101 ErrorsĪn error that begins with 0xC1900101 is usually a driver error. If it looks like your drive is running low on space, see Tips to free up drive space on your PC. You’ll see the amount of available space under the drive. If there are multiple drives listed, the system drive is the drive that includes a Microsoft Windows logo above the drive icon. Then select Computer or This PC and look under Hard Disk Drives or under Devices and drives. To view how much hard drive space is available on your computer, select File Explorer on the taskbar (known as Windows Explorer in Windows 7) or press Windows logo key + E. To upgrade to Windows 11, you need enough space on your hard drive for the installation to take place.

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