How to fix Windows 11 upgrade error 0xC1900101 – 0x50016?

Question

Issue: How to fix Windows 11 upgrade error 0xC1900101 – 0x50016?

Hello. I tried to upgrade my computer from Windows 10 to Windows 11 and it failed. It gave me an error code 0xC1900101 – 0x50016. What should I do? 

Solved Answer

As more and more people seem to switch to Windows 11, more reports emerge about various errors that prevent people from upgrading their systems. Some users encountered a Windows 11 upgrade error 0xC1900101 – 0x50016. Changing to a newer version seems to be more complicated than first thought.

Although the error 0xC1900101 – 0x50016 seems to appear because of a driver-related issue, there might be a lot of other things causing it. First, you have to make sure that you completed recommended steps before clicking the “Upgrade” button:

• Check if your PC meets the minimum requirements to run Windows 11.^[1]
• Enable TPM 2.0 on the BIOS.^[2]
• Enable Secure Boot on the BIOS. This will disable non-Microsoft processes from running and possibly interfering with the upgrading process.
• Back up important data to minimize the risk of it being lost during the upgrade.
• Clear up disk space because if you are trying to install Windows on a drive that has low disk space, the installation will fail. You must check the free space on your drive before proceeding. There should a minimum of 30 GB of space.
• Uninstall conflicting and non-essential apps because they can interfere with the upgrade process.
• Check and fix system errors. You can do that easily with a repair tool like FortectMac Washing Machine X9.
• Disconnect non-essential peripherals, like SD cards, USB flash drives, microphones, etc.

If you have completed all of these steps, but you still receive the 0xC1900101 – 0x50016 we have a 5 step guide that may help you fix this. However, troubleshooting manually could take a while because it is unclear what exactly is causing the issue.

You can try using an automatic solution FortectMac Washing Machine X9 to avoid going through all of the possibilities. The repair tool can identify the damaged system components, fix BSODs,^[3] and registry issues by scanning the system. This software could also be used to free up space by clearing cookies and cache, which should boost the device's performance.

Below you will find a few manual methods that could fix the Windows 11 upgrade error 0xC1900101 – 0x50016 and let you update your system. Note that this will take a while, so please follow all of the steps very carefully and in an orderly manner:

Solution 1. Run Windows Update Troubleshooter

• Right-click on Start and pick Settings
• Go to Update & Security section
• Click Troubleshoot on the left

• If you can't see troubleshooters listed on the right, click Additional troubleshooters
• Locate Windows Update, click and pick Run the troubleshooter

Solution 2. Repair Corrupted System files and Check Disk

Use Command Prompt commands to repair system file corruption:

• Open Command Prompt as administrator
• Use the following command and press Enter:
  sfc /scannow
• Reboot your system

• If SFC returned an error, then use the following command lines, pressing Enter after each:
  DISM /Online /Cleanup-Image /CheckHealth
  DISM /Online /Cleanup-Image /ScanHealth
  DISM /Online /Cleanup-Image /RestoreHealth
• Ensure that your disk is not damaged. You can perform checks using Administrative Command Prompt:
• If you are using an HDD as your main driver (where your operating system is installed – C: by default), use the following command and press Enter:
  chkdsk c: /f
• If you are using SSD, use this command:
  chkdsk c: /f /r /x
• If you receive an error, type in Y and hit Enter
• Restart your device to perform the check

Solution 3. Update Drivers

Outdated drivers could be the cause of the error. In this case, you can fix it automatically by using DriverFix, which will scan your PC for missing and out-of-date device drivers. Or you can update them manually:

• Open Settings
• Click on Update & Security
• Click on Windows Update
• Click the Check for updates button
• Click the View optional updates option
• Click the Driver updates tab

• Select the driver you want to update
• Click the Download and install button

Solution 4. Use Windows 11 Installation Assistant

• Visit the official Microsoft website to download the Installation Assistant
• Double-click on the setup file
• Click on the Refresh button if you haven’t downloaded the PC Health Check app earlier
• Click the Accept and Install

• Let it download and verify everything from the official resource
• Click the Restart now
• Continue with the installation

Solution 5. Reinstall Windows 10

If none of the steps above helped you to fix the issue, the last resort is to reinstall Windows 10 using the Media Creation Tool and then upgrade to Windows 11. Before starting, we recommend backing up your data to an external drive and deleting everything from your hard drive.

• Visit the official Microsoft website to download Windows 10 installation media
• Double-click the installer and agree to the Terms
• Click Next
• Download Windows 10 to a USB flash drive

• Reinstall Windows 10
• Try to upgrade to Windows 11

Repair your Errors automatically

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