How to Fix Windows Update Error Code 800B0100

While installing updates in Windows you may get the error code 800B0100. This relates to the Windows Update software not being able to connect to Microsofts servers.

Disable Your Firewall

• Disable any custom firewall you may have
• Try Updating again

Disable Windows Firewall

• Open the Start Menu and Click Control Panel

• Click on the Windows Firewall icon

• In the sidebar click Turn Firewall on or off

• Change both settings to off

• Save those settings and try again (Please turn the firewall back on afterwards!)