Microsoft Excel Update KB2920753

Hello Paul.
Thank you for contacting us. Yes, you are correct with your understanding, Paul. Installing Windows updates may need your PC to restart to apply those updates. AVG firewall may appear to be disabled upon restart. In this case, AVG resident shield and AVG Identity protection will take care of your PC when firewall is disabled. Thank you.

When manually installing this update it required the stop and restart of AVG Firewall. Does it automatically do this when being applied through the Windows Update process and if so does it expose my computer to Internet malware? Or, does it complete the process on reboot ensuring that the firewall is not turned off at any point during a Windows Update Process?

Hello Paul.
Thank you for contacting us. Yes, you are correct with your understanding, Paul. Installing Windows updates may need your PC to restart to apply those updates. AVG firewall may appear to be disabled upon restart. In this case, AVG resident shield and AVG Identity protection will take care of your PC when firewall is disabled. Thank you.