How to resolve error code 0x800f0923: Unable to download source files in Windows Server 2016

To resolve error code 0x800f0923 in Windows Server 2016, follow these steps:

1. Verify your internet connection: Ensure your server is online and there are no connectivity problems.
2. Turn off third-party antivirus programs: Sometimes, external antivirus software can disrupt the installation process. Temporarily disable any antivirus software and see if the issue is resolved.
3. Utilize the Windows Update troubleshooter: Windows Server 2016 includes a troubleshooter that can help detect and resolve Windows Update problems. To access it, navigate to Settings > Update & Security > Troubleshoot > Windows Update.
4. Review your firewall settings: Confirm that your firewall isn't blocking the Windows Update service. You may need to add an exception in your firewall settings to permit Windows Update to download and install updates.
5. Download and install the update manually: If other methods fail, try manually downloading and installing the update from the Microsoft Update Catalog. Visit the Microsoft Update Catalog website, search for the required update, and download it. Then, execute the downloaded file to install the update.