In the window that appears, type DISM.exe /Online /Cleanup-image /Restorehealth and press the Enter key. Choose Command Prompt from the list of results. For more information, see Disk cleanup in Windows.Ī file needed by Windows Update is likely damaged or missing. Try repairing your system files: In the search box on the taskbar, type command prompt. If restarting device does not resolve the issue, then use the Disk Cleanup utility and clean up the temporary files and the System files. Check to make sure that any incompatible apps are uninstalled and then try upgrading again.Ī cleanup operation from a previous installation attempt is still pending, and a system restart is required to continue the upgrade. This could indicate that an incompatible app installed on your PC is blocking the upgrade process from completing. Windows Update will try again later and there is nothing you need to do at this time. This indicates that there was a problem downloading and installing the selected update. If you continue having problems upgrading or installing Windows, contact Microsoft support. The following table lists the most common upgrade and installation errors and some things you can try to fix them. Note: You must have administrator permissions on your device to do this. Repairs automatically start on your hard drive, and you’ll be asked to restart your device.

In the window that pops up, type chkdsk/f C: and press the Enter key. Repair hard-drive errors. In the search box on the taskbar, type command prompt. Windows Defender will help protect your device in the meantime. Make sure you know how to reinstall your programs and that any necessary product keys are on hand. Press and hold (or right-click) the device name and select either Update Driver Software or Uninstall to correct the errors. In the window that pops up, look for any device with a yellow exclamation mark beside it (you may have to select each category to switch to the list of devices). Remove all external storage devices and drives, docks, and other hardware you might have plugged into your device that isn’t needed for basic functionality.Ĭheck Device Manager for errors. In the search box on the taskbar, type device manager. You can find third-party drivers and installation instructions for any hardware you’ve added to your device on the manufacturer’s website. 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.

Windows 10 to windows 11 upgrade