How to solve the error code 0x800f0906: Windows couldn't connect to the internet to download necessary files in Windows Server 2019

There are several steps you can take to solve the error code 0x800f0906:

1. Check your internet connection: Make sure your internet connection is stable and working properly. If you are using a wired connection, check the cable and make sure it is properly connected. If you are using a wireless connection, try resetting your router or modem.
2. Disable firewall and antivirus: Sometimes, the firewall or antivirus software can block the connection to the internet. Try disabling them temporarily and see if it resolves the issue.
3. Check Windows Update settings: Make sure that your Windows Update settings are configured correctly. Go to Settings > Update & Security > Windows Update and check if the settings are set to automatic.
4. Run the Windows Update troubleshooter: Windows has a built-in troubleshooter that can help you identify and fix issues with Windows Update. Go to Settings > Update & Security > Troubleshoot > Windows Update and run the troubleshooter.
5. Manually download and install updates: If all else fails, you can try manually downloading and installing the updates. Go to the Microsoft Update Catalog website and search for the updates you need. Download and install them manually.