# How to Fix Windows update error 0x800f0900

**URL:** https://www.compsmag.com/blogs/how-to-fix-windows-update-error-0x800f0900/
**Author:** Ayushi Chauhan
**Published:** 2023-02-08
**Updated:** 2023-02-08
**Categories:** Blogs
**Tags:** Best of Best, Blogs Daily, Computer Guides, Computers Tips and Tutorials, guiderobert, Guides and Tutorials, guiding12, How To Guide, How To Guides, internet tips and tutorials, Originals How to, Software tips and tutorials, Tips, Tricks, Windows 10, Windows 11, Windows Tips
**Reading Time:** 5 min

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Every month, Microsoft sends out major security, stability, and feature updates on Patch Tuesday, which is usually every second or sometimes every fourth Tuesday. Minor and optional patches are sometimes available at random, but they are usually not that big of a deal. Most [Windows](https://compsmag.com/best/windows-apps/) users don’t care much about what the update is, but they are still responsible enough to keep their computers up to date.

When users of [Windows 11](https://compsmag.com/reviews/windows-11-review/) try to install the Cumulative Update (10.0.22000.100), they get the error 0x800f0900 (KB5004300). The main things that cause this error are system [files](https://compsmag.com/best/file-manager/) that are broken or corrupted and the installation mode. This problem is like Windows 11 error code 0x800f0830, which happens when your system installation is broken and needs to be fixed. Like the 0x800f0805 Windows Update error, this can be fixed by resetting the update components or running the built-in troubleshooter.

If you don’t fix this problem, you might get a message saying that your device is missing important security and quality fixes. This means that your system is vulnerable, but there are ways to fix this problem. This is a good idea because software bugs that aren’t fixed can make an old OS vulnerable to a cyberattack. Most of the time, users don’t have to do much to get the latest updates. This is because it happens automatically. Once that’s done, you have to restart Windows for the new patch to take effect. This is when users said they got an error code of 0x800f0900. Because of this, they can’t update their system to the most recent version.

## Ways to Fix Windows update error 0x800f0900

### Use Media Creation Tool

1. You need to **download** the utility from the Microsoft website.
2. Then run the downloaded file.
3. After you agree to the terms of use, you will have **two** **options** to choose from. Select **Update** this PC now.
4. **Select** Keep personal files to make sure they are not touched.
5. Start the **process** and wait for it to finish.

### Run DISM

Deployment Image Servicing and Management (DISM) is similar to performing an SFC scan. However, it uses different algorithms to find the problem and repair corrupted data that SFC might miss. Therefore, let’s try to run it using the command prompt as before.

1. Open the command prompt as in the previous step.
2. Copy and paste this command: **DISM.exe /Online /Cleanup-image /Restorehealth**.
3. Click the **Enter** **key** and wait for Windows to finish scanning and repairing.
4. Then **restart** your PC and install the update again.

### Run a System File Checker (SFC) scan

1. **Open Command Prompt** by typing cmd in the search box next to the button in the Start menu.
2. Right-click Command Prompt and select Run as Administrator.
3. Once the console opens,**type the command sfc /scannow** and click Enter.
4. [Restart your computer](https://compsmag.com/blogs/how-to-restart-computer/) when the troubleshooting **process** is complete.
5. After you have completed this step, try installing the update again. If the error still occurs, continue reading this guide to try other options.

### Clean up unnecessary system files

Some users reported that cleaning the system [files](https://compsmag.com/best/file-manager/) can fix the problem. This means that you need to delete the recovery copies and cached files on your PC. This can be quite risky, as there is no way to revert to the previous version backed up on your system. Nevertheless, some users report that this was very helpful in solving the update problem.

1. **Open** this PC.
2. **Right**–**click** on your main hard drive and select Properties.
3. Locate and click on Disk Cleanup.
4. Then select **Clean** **up** system files, check all the boxes and click OK.
5. Then [restart your window PC](https://compsmag.com/blogs/how-to-restart-windows-pc/) and try to **install** the update again.]

### Clear up Windows components

1. Press the **Windows + R key c**ombination to open the command prompt, paste taskschd.msc and click OK.
2. In the left pane, navigate to **Library** > **Microsoft** > **Windows** > **Maintenance**.
3. Then right-click StartComponentCleanup and select Run.
4. Wait until the process completes, restart your [computer](https://compsmag.com/best/computers/) and try to install the conflicting update again.

### Troubleshoot the Windows Update

1. **Press “Windows key + I”** to go to the “Settings”.
2. Locate and select the “**Update** and **Security**” tab.
3. In the left pane, select “**Troubleshoot**“.
4. Expand the “Windows Update Troubleshooter” and **click** “Run the troubleshooter”.
5. The **errors** **on** your system will be detected and repaired automatically.

### Uninstall the Antivirus

There is never an update problem that is due to a hardware problem. It could be related to software issues. Various third-party applications can cause update errors, especially for important updates. The main reason why the updates cannot be installed is [antivirus software](https://compsmag.com/best/antivirus-software/). Antivirus programs may prevent the installation of some files during the update process. Make sure that you disable the third-party antivirus program until the system receives updates. You can also disable all third-party applications by following these simple steps:

1. **Go** to “Task Manager.”
2. **Click** “Startup.”
3. Disable all **third**–**party** **applications** from here.
4. Your update problems might now find a solution. If you are still facing an error, proceed to the next method.

## Check requirements of Update

RAM of 1GB for 32 bit and 2GB for 64 bit,

HD space of 16 GB for 32 bit and 20 GB for 64 bit,

Processor with 1GHz or faster,

Screen resolution of at least 800 x 600,

Microsoft DirectX 9 or later with WDDM 1.0 graphics driver,

Internet connectivity

## Final Words

When you try to install updates for Windows 10, you get the 0x800f0900 error. Error 0x800f0900 means “Unexpected Internal XML Parser Error” (CBS E XML PARSER FAILURE), which means that some system files related to the update process are broken. We hope our article on “How to Fix Windows update error 0x800f0900” will surely help you to do so. you can visit[Microsoft support center](https://support.microsoft.com/en-us) for further help.

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