Software⏱️ 3 min read📅 2026-06-11

How to Fix 0xc1900101 Error – Windows 10 Anniversary Upgrade error 0xc1900101 - 0x30018 referring to SYSPREP

Windows 10 Anniversary Upgrade error 0xc1900101 - SYSPREP issue.

Quick Answer: Try updating display and Wi-Fi drivers to the latest versions before retrying the upgrade.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. ✅ Best Solutions to Fix It
  3. 💡 Conclusion

The Windows 10 Anniversary Upgrade error 0xc1900101 - 0x30018 referring to SYSPREP is a frustrating issue that affects users who are attempting to upgrade their operating system. This error occurs when the installation process fails during the SYSPREP phase, which is an important step in preparing the system for a new operating system.

The frustration level associated with this error is high, as it can cause the entire upgrade process to fail and leave the user's system in an unstable state. In this troubleshooting guide, we will explore the possible causes of this error and provide steps to resolve the issue.

💡 Why You Are Getting This Error

  • One main reason for this error is a corrupted or incomplete System Preparation (SYSPREP) process. SYSPREP is responsible for preparing the system for the new operating system by configuring the system settings, installing drivers, and setting up other essential components. If the SYSPREP process fails, it can cause the installation to fail with an error code of 0xc1900101 - 0x30018.
  • Another possible reason for this error is a hardware or software conflict that prevents the upgrade from proceeding smoothly. This could be due to outdated drivers, incompatible hardware, or other system issues that need to be addressed before attempting the upgrade.

✅ Best Solutions to Fix It

Disable and Re-enable Network Adapter

  1. Step 1: Step 1: Disable any network adapters (Wi-Fi or Ethernet) on your system. This will prevent any potential conflicts that may cause the upgrade to fail.
  2. Step 2: Step 2: Restart your system after disabling the network adapter. This will ensure that all drivers and settings are reset before attempting the upgrade again.
  3. Step 3: Step 3: Enable the network adapter back in, and then restart your system once more. Repeat this process until you successfully complete the Windows 10 Anniversary Upgrade.

Update Drivers and BIOS

  1. Step 1: Step 1: Update all drivers to their latest versions, including display drivers, Wi-Fi drivers, and other essential components.
  2. Step 2: Step 2: Update your system's BIOS (Basic Input/Output System) to the latest version. This will ensure that your hardware is compatible with the new operating system.

💡 Conclusion

To resolve the Windows 10 Anniversary Upgrade error 0xc1900101 - 0x30018 referring to SYSPREP, try disabling and re-enabling the network adapter or updating drivers and BIOS. If these steps do not work, you may need to perform a clean installation of Windows 10 instead of upgrading from your current operating system.

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