error code 12029-4 usually occurs if a second installation of Office was started before the first installation was finished or if you restarted your computer before the current Office installation was finished.
Please follow below steps for basic troubleshooting:
If Online Repair does not resolve this issue, or if you do not see Office 365 or Office 2013 in Programs and Features, follow these steps:
1) Remove Office 2013 or Office 365.
2) Restart the computer.
3)Re install Office 2013 or Office 365.
Type in the product key and click on Setup It will ask you to login to your Microsoft account. So that the new installation is associated with your Microsoft Account. Hence it is not required to keep the product key for the future use. It will be added to your Microsoft Account. Follow the below steps to complete the installation
Now you are good to use the new Office 2013 or Office 365.
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