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 . 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.
Run the Office Activation tool
Running the Office Activation tool has been reported to work by several affected Windows users. This method requires you to download a compatible Office Activation troubleshooter (Microsoft 365, Office 2016, 2019, or 2013) and use it to fix the error. You can follow the below steps if you want to go with this solution.
To run the Office activation tool, you first need to download either Microsoft 365, Office 2016 & Office 2019, or Office 2013 depending upon which version currently you’re using.
After downloading it, go to the downloading location and open the .exe / .diagcab file.
When UAC appears on the screen, click Yes to grant administrative privileges.
On the next screen, click on the Advanced menu and then tick the Apply repairs Automatically box and then click the Next button. Wait for a while until it scans the initial state.
If a viable fix is detected, it will be applied automatically.
On the next screen, click the Apply this fix option and then follow the on-screen guidelines.
Once you perform the procedure, restart your computer. And then open the Office app and see if the problem is fixed now.
Regards, James