5 Ways to Resolve the Windows 10/11 Error Code 0xC1900101 – 0x30018

BSOD System Crash Programming
Quick Fix

Click to download Outbyte PC Repair and discover its benefits for your Windows system.

Designed for Windows 10 and 11.

Take advantage of our special offer to enhance your PC performance. For more details, please read About Outbyte, and Uninstall Instructions. Also, please review our End User License Agreement (EULA) and Privacy Policy.

Updating Windows should be a simple process through Windows Update, but errors and installation failure can occur due to various factors.

One of the commonly encountered update errors is the error code 0xC1900101 – 0x30018. This is the update installation error that prevents Windows users from installing updates to the system and the apps. A lot of Windows users have reported encountering this error, especially when installing a major OS update. For example, several users have experienced this error as early as the 1903 build while others got this error when installing more recent builds of Windows 10/11.

This error causes a lot of inconvenience because Windows users are not able to proceed with the update. When users can’t install a specific update, the apps and system processes get left behind as Windows introduces more updates. And when the system is outdated, various errors and system problems are sure to crop up.

If the Windows 10/11 error code 0xC1900101 – 0x30018 has been hounding you and preventing you from installing any updates, this guide should be perfect for you. We’ll discuss the common causes of 0xC1900101 – 0x30018 on Windows 10/11 and some proven methods of dealing with this error.

Expert Tip: For smoother PC performance, consider using a PC optimization tool. It handles junk files, incorrect settings, and harmful apps. Make sure it's right for your system, and always check the EULA and Privacy Policy.

Free Scan for PC Issues
Compatible with: Windows 10/11, Windows 7, Windows 8

Special offer. About Outbyte, uninstall instructions, EULA, Privacy Policy.

What is the Error Code 0xC1900101 – 0x30018?

The error code 0xC1900101 – 0x30018 on Windows 10/11 is an update installation error that results in a blue screen of death. This error happens when users are installing a major update to the Windows operating system. For example, several users have reported getting this error when upgrading to a different Windows 10/11 build. This error can also appear when the computer is being upgraded from an old Windows version (Windows 7, 8, or 8.1) to Windows 10/11.

The error code 0xC1900101 – 0x30018 on Windows 10/11 is usually accompanied by this error message:

We couldn’t install Windows 10/11

We’ve set your PC back to the way it was right before started installing Windows 10/11.

0xC1900101 – 0x30018 failed in FIRST_BOOT phase with an error during SYSPREP_SPECIALIZE operation.

This error can be caused by a wide range of issues, including software incompatibility, corrupted installation files, device driver issues, poor internet connection, or malware infection. Microsoft is yet to release an official fix for this error, so users are left fending for themselves. You need to figure out what’s causing the error to facilitate the troubleshooting process. But if you can’t zero in on the root cause of the problem, you can simply try all the solutions below to see which one works for you.

How to Fix 0xC1900101 – 0x30018 on Windows 10/11

When you’re doing a major update installation or operating system upgrade, you need to ensure that you have made the necessary preparations to prevent errors such as 0xC1900101 – 0x30018 from ruining the whole process. Here are some basic steps you need to perform before clicking that Update button:

  • Disable your antivirus or anti-malware software temporarily to prevent it from interfering with the update process. Turn off your firewall as well. Don’t forget to turn it back on after the error has been resolved.
  • Switch to a wired connection if possible. If you don’t have a cable connection, try moving closer to the router or modem so you get better Wi-Fi connection.
  • Remove all computer peripherals, including USB drives, CD/DVD, speakers, hubs, and others, except for your keyboard and mouse.
  • Use a PC cleaner software to get rid of all junk files that might be lurking in your system.
  • If you’re using a laptop, make sure it has enough battery or plug it into the charger so it doesn’t die out during the update installation.

If you’ve done the above steps and you still encountered the error 0xC1900101 – 0x30018 on Windows 10/11, proceed to the solutions below:

Solution #1: Use Windows Troubleshooter.

Windows 10/11 has a built-in troubleshooter to help users fix common problems, including update failures. This tool is useful for not-so-techy Windows users because it simplifies the whole process. To use the Windows Troubleshooter to fix the error code 0xC1900101 – 0x30018 on Windows 10/11, follow the steps below:

  1. Click on the Start button and select Settings.
  2. Click Update & Security section, then click Troubleshoot.
  3. Click on the Windows Update option and run the Troubleshooter.
  4. Follow the on-screen instructions to find out whether there is a problem with the Windows Update services and processes. The troubleshooter automatically fixes the errors that were detected.
  5. Once the process has been completed, navigate back to the Troubleshoot menu and click the Internet Connections troubleshooter.
  6. Run the troubleshooter once again to see if you’re having internet connection problems.

Wait for the process to be completed, then check if the error has been resolved by installing the update once again.

Solution #2: Reset the Windows Update Components.

If there is something wrong with the Windows Update feature, resetting its component should help resolve any issues related to it. To do this, you need to follow the instructions below:

  1. Open Command Prompt and run it as an administrator.
  2. Quit the MSI Installer, Windows Update Services, BITS, and Cryptographic processes by typing in the following command in the Command Prompt window, followed by Enter:
    • net stop msiserver
    • net stop wuauserv
    • net stop bits
    • net stop cryptSvc
  3. Rename the Catroot2 and Software Distribution folders by using these commands, followed by Enter:
    • ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
    • ren C:\Windows\System32\catroot2 Catroot2.old
  4. Restart the MSI Installer, Windows Update Services, BITS, and Cryptographic processes using these command lines, followed by Enter:
    • net start wuauserv
    • net start cryptSvc
    • net start bits
    • net start msiserver

Your Windows Update feature should now be reset and the error should have been resolved. If not, proceed to the next step.

Solution #3: Try This Simple Registry Hotfix.

Several users have used this solution to fix the error code 0xC1900101 – 0x30018 on Windows 10/11 so it is worth checking out. This solution deleted any unused drivers on your computer that the Disk Cleanup tool couldn’t take care of.

To do this:

  1. Open Command Prompt and run it as an administrator.
  2. Type in the following command in the Command Prompt window, followed by Enter:
    rundll32.exe pnpclean.dll,RunDLL_PnpClean /DRIVERS /MAXCLEAN
  3. Close the Command Prompt window and restart your computer for the changes to take effect.

Tip: Cleaning up unused drivers may be helpful in resolving this issue. Consider using tools that can get rid of unnecessary files and junk that might be related to errors, such as 0xC1900101 – 0x30018. For instance, a tool like PC cleaning tool could be useful in such scenarios.

Once your computer has restarted, you can try installing the updates again.

Solution #4: Run the SFC and DISM Tools.

If the installation error is caused by a corrupt installation file or system file, running the System File Checker (SFC) tool should do the trick. If the SFC tool is not enough to fix the issue, you can use the Deployment Image Servicing and Management (DISM) utility instead. Both of these tools require running commands using the Command Prompt.

To run the SFC tool, type in this command, followed by Enter:

  • sfc/scannow

To run the DISM tool, type in these commands, followed by Enter after each line:

  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

Wait for the processes to be completed before installing the updates once again.

Solution #5: Install Windows via Media Creation Tool.

If you’re encountering this error when updating your Windows 10/11 operating system using the built-in update manager tool, you can install the updates using an .ISO file instead. You can download the installer via Microsoft’s website.

  1. Download the ISO installer from this link by clicking Download tool.
  2. Choose Run.
  3. Select Accept on the License page.
  4. Click Upgrade this PC > Next.

The tool will then start downloading the ISO file. Once it is done, the installation will be initiated. Follow the on-screen instructions for the installation process. The installation might take some time and your PC will restart several times, but this is part of the process.


Getting the error 0xC1900101 – 0x30018 on Windows 10/11 can be troublesome because you won’t be able to keep your system updated unless you fix this error. 0xC1900101 – 0x30018 is just one of the many installation errors Windows 10/11 users might encounter, but this error is more difficult to deal with because it can lead to a blue screen of death. If you get this error, you can try any of the solutions above to resolve it.

Give us some love and rate our post!
[Total: 0 Average: 0]
Notify of
1 Comment
Newest Most Voted
Inline Feedbacks
View all comments
1 year ago

I did all your recommendations above, but nothing. I still cannot install windows 11. Same error

Featured Stories
How To Run Programs As Administrator in Windows
The Ultimate Guide to Cloning Your Hard Drive on Windows and Mac
How to Resolve Windows 10 Boot Issues
How to use Windows 10 Shutdown Command
How to Enable Windows 10 Full Screen Mode
How to Change Username in Windows 10 — A Step-by-step Guide
How to Rotate Screen on Windows 10 and Windows 11: A Step-by-Step Guide
Complete List of Windows 10 and 11 Keyboard Shortcuts
How to Fix Black Screen Issues in Windows 10