If you pre-own Microsoft Office software on your device and you are installing a new Office product on it, then you are sure to come across certain hurdles in your way. This usually happens when there are two similar programs available on the same device or when you try to install a conflicting program on it. And hence, Microsoft Office is not an exception here. Many Office users have reportedly faced Microsoft Office error 0X4004F00C while trying to activate Office setup via office.com/setup . In most cases, users are unaware of the reason behind this error. Thus, to know more about this specific error code and how to get rid of it, you may continue to read this article further. Ways to fix the error 1. Disable/turn off the Windows Firewall
If you have an active firewall on your device, then it may restrict the downloading process of certain programs. Thus, you may try to disable this firewall using the process given below: Open the Control Panel on your device Now, locate “Windows Defender Firewall” Navigate to the left pane And tap on “Turn Windows Defender Firewall off” 2. Repair and Reinstall Repairing the Office files would help you to fix this error. Perform the following steps to do so: From the Control Panel, go to the “Programs and Features” section Locate Office installation and right-click on it Then, tap on the “Change” option Select “Online Repair” and wait for it to end Restart your device and reinstall Office via office.com/setup 3. Disable proxy servers If these two methods failed to help you, then you should disable the proxy server settings on your device by navigating to the “Network Internet” Settings menu.