Update error 0xC1900101 – 0x4000D sometimes appears when users try to install the latest updates on their computers. It usually happens when installing update 22H2 and force reverting the system to Windows 10.
How to fix Windows Update error 0xC1900101 – 0x4000D
1. Start with basic troubleshooting
- Check if all Windows update services are running normally
- Run the Windows Update troubleshooter
- Run a system scan: If the troubleshooter fails to identify the error, the next action will be to scan the system for errors using SFC and DISM. SFC finds corrupted system files and replaces them
- Make sure your system complies with installation requirements: In some cases, the problem is caused by users downloading Windows 11 on incompatible hardware by bypassing Secure Boot’s installation requirements and TPM. If this is the case, you can upgrade directly with the ISO file.
If the problem persists even after trying these quick troubleshooting techniques, move on to the next methods mentioned below.
2. Free up space for upgrades
The article recommends that you start by deleting old versions of Windows. The system saves this data when you upgrade to a newer build.
Here’s how you can do it:
- Press the Win + I key combination to open Windows Settings.
- Select System from the left pane and click Storage on the right side of the window.
- Locate the Temporary files option and click on it.
- Check the box Windows Update Clean-up. You can also select other files that you don’t need here.
- Click Remove files and wait for the process to complete.
- Alternatively, you can use Disk Cleanup utility to free up space in the targeted drive. Once the process is complete, check if the problem is resolved.
3. Update BIOS
The problem can also be caused by an outdated BIOS. Since Windows 11 has pretty strict installation requirements for its updates, you may have problems if the BIOS is not up to date.
You can check your current BIOS version by typing System Information in the taskbar search area and clicking Open. In the following dialog, find the BIOS version category and write down the version from there.
You can also easily update the BIOS if your motherboard has a BIOS Quick Flash button. That way, you don’t have to go through many loops just to make sure your BIOS is updated to the latest version.
4. Update drivers
You must also make sure that all the drivers installed on the computer are up to date. An easy way to find faulty/outdated drivers is through the Device Manager utility.
5. Clean install Windows
If none of the methods worked for you and you are still facing problems, then you can use the Windows ISO file to perform a clean install of Windows 11. This will automatically install new updates. (like update 22H2) on the system.
The good thing about this method is that it gives you the option to keep all your files and folders, so you don’t have to worry about losing them.
