There are many reasons why you might receive an error message when upgrading or installing Windows 10, but common errors can be fixed with a few steps that you can do on your own.
Before searching for a specific error code, try the tips listed in General fixes. If those don't fix your upgrade or installation problem, check the table of error codes at the bottom of this article.
General fixes
0xC1900101 Errors
An error that begins with 0xC1900101 is usually a driver error. If you see any of these error codes, try the following steps first to fix the problem. If these steps don’t work, see Resolve Windows 10 upgrade errors for more detailed technical info.
- 0xC1900101 - 0x20004
- 0xC1900101 - 0x2000c
- 0xC1900101 - 0x20017
- 0xC1900101 - 0x30018
- 0xC1900101 - 0x3000D
- 0xC1900101 - 0x4000D
- 0xC1900101 - 0x40017
- Make sure that your device has enough space. Your device requires at least 16 GB of free space to upgrade a 32-bit OS, or 20 GB for a 64-bit OS. For more info, see Free up drive space in Windows 10.
- Run Windows Update a few times. Download and install any available updates in Windows Update, including software updates, hardware updates, and some third-party drivers. Use the troubleshooter for Windows 10 to fix Windows Update errors.
- Check third-party drivers and download any updates. You can find third-party drivers and installation instructions for any hardware you’ve added to your device on the manufacturer’s website.
- Unplug extra hardware. 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.
- Check Device Manager for errors. Select the Start button, then in the search box on the taskbar, type device manager. Choose Device Manager from the results. 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). Press and hold (or right-click) the device name and select either Update Driver Software or Uninstall to correct the errors.
- Remove third-party security software. Make sure you know how to reinstall your programs and that any necessary product keys are on hand. Windows Defender will help protect your device in the meantime.
- Repair hard-drive errors. Select the Start button, then in the search box on the taskbar, type command prompt. Choose Command Prompt from the list of results. In the window that pops up, type chkdsk/f C: and press the Enter key. Repairs automatically start on your hard drive, and you’ll be asked to restart your device. Note
You must have administrator permissions on your device to do this.
- Do a clean restart into Windows. Learn how.
- Restore and repair system files. Select the Start button, then in the search box on the taskbar, type command prompt. Choose Command Prompt from the list of results. In the window that pops up, type DISM.exe /Online /Cleanup-image /Restorehealth and press the Enter key. (Learn to repair a Windows image) Note
You must have administrator permissions on your device to do this.
Other Common Errors
The following table lists the most common upgrade and installation errors and a some things you can try to fix them. If you continue having problems upgrading or installing Windows 10, contact Microsoft support.
| Error | What it means and how to fix it |
|---|---|
| 0xC1900208 – 0x4000C | This could indicate that an incompatible app installed on your PC is blocking the upgrade process from completing. Check to make sure that any incompatible apps are uninstalled and then try upgrading again. |
| 0xC1900107 | A cleanup operation from a previous installation attempt is still pending, and a system restart is required to continue the upgrade. Restart the device and run setup again. If restarting device does not resolve the issue, then use the Disk Cleanup utility and clean up the temporary files and the System files. For more information, see Disk cleanup in Windows 10. |
| 0x80073712 | A file needed by Windows Update is likely damaged or missing. Try repairing your system files: Select the Start button and type command prompt in the search box on the taskbar. Choose Command Prompt from the list of results. In the window that appears, type DISM.exe /Online /Cleanup-image /Restorehealth and press the Enter key. |
| 0xC1900200 – 0x20008 0xC1900202 – 0x20008 | This may signify that your PC doesn’t meet the minimum requirements to download or install the upgrade to Windows 10. Learn more about the minimum requirements for Windows 10 |
| 0x800F0923 | This might indicate that a driver or other software on your PC isn't compatible with the upgrade to Windows 10. For info about how to fix this problem, contact Microsoft support. |
| 0x80200056 | This could mean that the upgrade process was interrupted because you accidentally restarted your PC or signed out of your PC. Try upgrading again and make sure your PC is plugged in and stays turned on. |
| 0x800F0922 | This error might mean that your PC couldn't connect to the Windows Update servers. If you're using a VPN connection to connect to a work network, disconnect from the network and turn off the VPN software (if applicable) and try upgrading again. The error could also mean there isn't enough free space in the System Reserved partition. You might be able to fix this problem by using third-party software to increase the size of the System Reserved partition. |
| Error: We couldn't complete the updates. Undoing changes. Don't turn off your computer. Error: Failure configuring Windows Updates. Reverting changes. | These are generic errors that might appear any time a Windows update fails. You'll need to determine the specific error code to investigate how to best resolve this problem. You can find the error code for the failed update by viewing your update history. Look for the update that wasn't installed, note the error code, and then contact Microsoft support.
To view your update history in Windows 8.1:
To view your update history in Windows 7:
|
| Error: The update isn't applicable to your computer. | This error might mean that your PC doesn't have the required updates installed. Check to make sure that all important updates are installed on your PC before you try upgrading. |
| 0x80070070 – 0x50011 0x80070070 – 0x50012 0x80070070 – 0x60000 | This likely indicates that your PC doesn’t have enough space available to install the upgrade. Free some space on the drive and try again. Get tips for freeing up drive space |