Blog

How to Fix Windows 10 Install Errors 0xc1900101 and 0x20017: Step-by-Step Solutions

Windows 10 installation errors like 0xc1900101 and 0x20017 can be frustrating. These errors usually indicate problems during the upgrade or installation process. Fortunately, there are several straightforward steps you can take to fix them. This guide will walk you through each solution in simple terms.

Both error codes often relate to driver issues or system conflicts. Fixing them involves checking hardware, software, and system settings. Patience and following the steps carefully will help you complete your Windows 10 installation successfully.

Before starting, make sure you have enough free disk space and a stable internet connection. These basics prevent many installation hiccups. Let’s begin with some quick checks.

By the end of this guide, you should be able to resolve these errors and enjoy a smooth Windows 10 upgrade or installation.

Quick Note Before You Begin

  • Backup your important files: Always save your important data to an external drive or cloud storage to prevent data loss.
  • Check disk space: Ensure you have at least 20 GB of free space on your system drive (usually C:).
  • Disable antivirus temporarily: Some security programs can interfere with installation.
  • Disconnect unnecessary devices: Unplug printers, external drives, and other peripherals during installation.
  • Update your drivers: Outdated drivers are a common cause of installation errors.

Step 1: Run the Windows Update Troubleshooter

The Windows Update Troubleshooter is a tool designed to detect and fix common update and installation issues automatically.

  1. Click on the Start button and select Settings (gear icon).
  2. Go to Update & Security > Troubleshoot.
  3. Click on Additional troubleshooters.
  4. Find and select Windows Update, then click Run the troubleshooter.
  5. Follow the on-screen instructions and apply any fixes suggested.

This tool often resolves simple glitches that block updates or installations.

Step 2: Free Up Disk Space

Insufficient space can cause installation errors. Windows needs enough room to download and unpack installation files.

  1. Open File Explorer and right-click on your system drive (usually C:).
  2. Select Properties and click Disk Cleanup.
  3. Check the boxes for temporary files, recycle bin, and other unnecessary files.
  4. Click OK and confirm to delete the selected files.

Removing unnecessary files can free enough space for installation to proceed smoothly.

Step 3: Update Device Drivers

Drivers control hardware communication with Windows. Outdated or incompatible drivers often cause installation failures.

  1. Press Windows + X and select Device Manager.
  2. Look for any devices with a yellow exclamation mark; these need attention.
  3. Right-click the device and choose Update driver.
  4. Select Search automatically for updated driver software.
  5. Repeat this for key devices like display adapters, network adapters, and storage controllers.

If automatic updates don’t work, visit the hardware manufacturer’s website to download the latest drivers manually.

Step 4: Temporarily Disable Antivirus and Security Software

Some antivirus programs can block Windows installation or updates incorrectly.

  1. Locate your antivirus icon in the system tray (near the clock).
  2. Right-click the icon and look for an option to disable or pause protection.
  3. Disable the antivirus temporarily during the installation.
  4. Remember to enable it again after the upgrade completes.

If you don’t have third-party antivirus, Windows Defender can also be temporarily disabled from Settings > Update & Security > Windows Security.

Step 5: Disconnect External Devices

External devices like USB drives, printers, or external hard disks can sometimes conflict with the installation process.

  1. Safely eject all external devices except your mouse and keyboard.
  2. Restart your PC and start the installation again.

This helps avoid driver conflicts and other hardware-related errors during installation.

Step 6: Perform a Clean Boot

A clean boot starts Windows with minimal background processes and services. This can help identify if any startup programs interfere with the installation.

  1. Press Windows + R, type msconfig, and press Enter.
  2. In the System Configuration window, go to the Services tab.
  3. Check the box for Hide all Microsoft services.
  4. Click Disable all.
  5. Go to the Startup tab and click Open Task Manager.
  6. In Task Manager, disable all startup items by selecting each and clicking Disable.
  7. Close Task Manager and click OK in the System Configuration window.
  8. Restart your computer and try the installation again.

If the installation works in clean boot mode, it means some program or service was causing the error.

Step 7: Use the Media Creation Tool for Installation

If the standard update process fails, the Media Creation Tool can help you perform the upgrade or clean installation manually.

  1. Go to the official Microsoft website and download the Media Creation Tool.
  2. Run the tool and select Upgrade this PC now.
  3. Follow the on-screen instructions to complete the installation.

This method often bypasses issues related to Windows Update and can solve stubborn error codes.

Step 8: Check and Repair System Files

Corrupted system files can cause installation errors. Running built-in tools can fix these files automatically.

  1. Press Windows + X and select Windows Terminal (Admin) or Command Prompt (Admin).
  2. Type the following commands one by one, pressing Enter after each:
sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth

The sfc /scannow command scans and repairs corrupted system files. The DISM command repairs the Windows image. Both are important for a healthy installation environment.

Frequently Asked Questions (FAQs)

What do error codes 0xc1900101 and 0x20017 mean?

These errors usually indicate driver conflicts or system issues during Windows 10 installation or upgrade. They often relate to incompatible or outdated device drivers.

Can I ignore these errors and try installation again?

It’s not recommended to ignore them. Repeated failed installations may corrupt your system or cause data loss.

Is it safe to disable antivirus during installation?

Yes, temporarily disabling antivirus reduces interference during installation. Just remember to enable it afterward to keep your system protected.

Will updating drivers always fix these errors?

Updating drivers solves many problems but not all. If errors persist after updating, try other troubleshooting steps outlined in this guide.

Can I use a USB flash drive to install Windows 10 if updates fail?

Yes, using a USB with the Media Creation Tool is a reliable alternative to upgrade or clean install Windows 10.

When Nothing Works

If you’ve tried all the steps above and still face installation errors, here are your final options:

  • Contact Microsoft Support: Visit the official Microsoft Support page for personalized help.
  • Perform a clean install: Back up your files and use the Media Creation Tool to format your PC and install Windows 10 fresh.
  • Check hardware health: Faulty RAM, hard drives, or SSDs can cause installation errors. Use diagnostic tools or get professional help if needed.
  • Seek professional assistance: If you’re unsure, a computer technician can help identify and fix deeper issues.

Conclusion

Errors 0xc1900101 and 0x20017 during Windows 10 installation mainly arise from driver conflicts and system issues. By following the steps in this guide—from running the troubleshooter to performing a clean boot and using the Media Creation Tool—you can resolve most problems.

Always start with simple fixes like freeing disk space and updating drivers before moving to advanced options. If all else fails, professional support and clean installation remain reliable solutions. With patience and careful troubleshooting, your Windows 10 installation will complete successfully.

Leave a Reply