How to Fix Windows Update Error Code C80003F3 on Windows 10/11

Windows users have encountered the Windows 10/11 update error code C80003F3 during Windows update installations or when launching the WU utility. This error code signifies a problem that requires attention. To fix it, specific troubleshooting steps can be followed.

In this article, we aim to answer all your questions about the error code C80003F3 on Windows 10/11.

What is Windows 10/11 Error Code C80003F3?

The Windows error code C80003F3 is your computer’s way of telling you that you are running out of RAM. It commonly happens to users who are fond of putting their computers to sleep instead of shutting it down.

In some severe cases, this error code affects a computer’s auto-update ability. This causes users to opt for manually updating their Windows versions.

According to reports, this error code commonly occurs on Windows 7, Windows 10/11, and Windows 8 devices.

Common Causes of the Windows Error Code C80003F3

As it turns out, there are many possible causes of the Windows error code C80003F3. These include the following:

• A problematic Windows update – This is probably the most common cause of the error code. A problematic Windows update may cause the components of WU to become stuck in a limbo state. When this happens, the best solution would be to launch the Windows Update troubleshooter.
• Disabled WU services – Another possible reason why this error code appears is that the essential services involved in the WU process may have been disabled. There are two possible situations when this happens. It could be because of manual user intervention where the user has opted to manually disable some WU services. It could also be caused by a resource optimization process done by a certain resource management app. Resolving this issue should be easy. Simply enable all the crucial WU services.
• A corrupted WU component – Sometimes, this error code occurs because of a persistent WU bug that cannot be fixed by conventional methods. If this happens, the best fix is to reset the corrupted WU component.
• Firewall blockage – It is likely that your firewall has blocked the connection between your computer and the server of WU. One of the most notorious firewalls that do this is Commodo. To fix this, simply uninstall the firewall suit and use your native firewall.

Ways to Resolve the Windows 10/11 Error Code C80003F3

If you are still struggling with the Windows 10/11 error code, then continue reading. We have compiled a list of possible fixes that you can try to resolve the problem.

Fix #1: Run the Windows Update troubleshooter

The first solution you should try is to run the Windows Update troubleshooter. This handy utility checks the entire WU component for any issues and recommends a possible fix that is suitable for the scenario. Here’s how to run the Windows Update Troubleshooter:

1. Launch the Run dialog box by pressing the Windows + R keys.
2. Into the text field, input ms-settings-troubleshoot, and hit Enter. This will take you to the Troubleshooting section of the Settings app.
3. Navigate to the Get up and running section.
4. Click Windows Update and hit the Run the troubleshooter button.
5. Wait until the scan is complete. Once a possible fix is identified, a new window will open. Click Apply this fix and follow the on-screen prompts.
6. After this, your computer should restart. Hopefully, the issue is already resolved.

Fix #2: Make sure to install important Windows updates

In case you don’t know yet, some Windows updates have certain prerequisites. This means for them to be properly installed, they need a particular update to be installed first. If that update is not available, the error code C80003F3 may appear.

Here’s how to do it:

1. Open the Run dialog box by pressing the Windows + R keys.
2. Into the text field, input ms-settings:windowsupdate and hit Enter. The Settings app should now open.
3. Click Check for Updates.
4. Follow the on-screen instructions to install all available updates.
5. Restart your PC.

Fix #3: Uninstall your third-party firewall

As mentioned above, a third-party firewall may cause the error code to appear. By uninstalling it, you may resolve the problem and proceed with your daily tasks without any problems.

Here’s how to uninstall your third-party firewall:

1. Open the Run dialog box and input appwiz.cpl into the text field.
2. Hit Enter. This will launch the Programs and Features window.
3. Scroll down through the list of applications and locate your third-party firewall. Right-click on it and click Uninstall.
4. Follow the on-screen prompts to completely uninstall the firewall.
5. Restart your PC.

Wrapping Up

There you go! That’s everything that we know about the Windows error code C80003F3. While it may not be a fatal error code, its occurrence suggests that there is something wrong with your PC. Therefore, try everything to get the problem resolved at once. Try the fixes we have listed above!

What other Windows Update error codes are giving you a headache? Comment on them below!