Error code 30034‑4 in Microsoft Office installation

Error code 30034-4 in Microsoft Office usually occurs during installation and is often caused by incomplete previous installations, interference from antivirus software, or corrupted setup files. To fix this error effectively, follow these steps:

• Restart your computer and close all background Office-related processes using Task Manager.


• Temporarily disable any antivirus or firewall software, as they may block Office components during installation.


• Uninstall any previously installed or partially installed Office versions, and remove leftover files from Program Files, AppData, and other related directories.


• Download a fresh copy of the Office installer from your copyright to ensure you're using clean, uncorrupted setup files.


• Right-click on the Office installer and select “Run as administrator” to ensure the process has full system access.


• If problems persist, perform a clean boot of your system to prevent background applications from interfering with the setup process.

For complete troubleshooting instructions and detailed support, refer to the official solution guide for Office error code 30034-4.