[Fixed] Windows Error Code 0xc80003f3 Solutions

Usual causes for this Error Code 0xc80003f3 are communication failure over the internet with Microsoft update servers.

To address this error, consider the following steps:

1. Run the Windows Update Troubleshooter: This built-in tool can automatically detect and fix many update-related issues.
2. Clear the SoftwareDistribution Folder: This folder stores temporary files for Windows updates. Deleting its contents can resolve issues caused by corrupted files.
3. Ensure Relevant Services Are Running: Verify that services like Windows Update, Background Intelligent Transfer Service (BITS), and Cryptographic Services are active.
4. Perform System File Checks: Use the System File Checker (SFC) and Deployment Imaging Service and Management Tool (DISM) to repair corrupted system files.
5. Reset Windows Update Components: Manually reset components to address deeper issues within the update system.

Firstly, I will suggest you to do Windows Troubleshoot for Error Code 0xc80003f3.

After that,

Disable the proxy internet connection and try again to install the update.

The procedure to disable the proxy connection is as follows:

1. 1. 1. Open Internet Explorer and click on Tools->Internet Options
      2. Goto Connections and LAN Settings
      3. Check to make sure the Proxy server is disabled.

Second case would be with your Antivirus. There are proxy settings enabled under your settings of any security programs that you may be using. If you cannot find the procedure to stop it, you can ask our techs on chat support to guide you.