How to resolve error code 30015-6(-1): Issue with Office installation

To resolve error code 30015-6(-1) encountered during Office installation, follow these steps:

Ensure your internet connection is stable: Verify that you have a reliable internet connection without any network issues.
Temporarily disable antivirus software: Antivirus programs can sometimes disrupt the installation process. Disable your antivirus temporarily and attempt the installation again.
Clear the Office installation cache: Clearing the cache can help fix installation problems. Follow these instructions:
- Press Windows key + R to open the Run dialog box.
- Enter %ProgramData%\Microsoft\Office\ and press Enter.
- Delete all files and folders in the Office directory.
- Restart your computer and try installing Office again.
Use the Office uninstaller tool: If Office was previously installed, use the uninstaller tool to remove leftover files or settings. Download the tool from the Microsoft website.
Attempt installation in safe mode: Third-party applications may interfere with the installation. Try installing Office in safe mode with these steps:
- Press Windows key + R to open the Run dialog box.
- Type msconfig and press Enter.
- In the System Configuration window, select the Boot tab.
- Check Safe boot and choose the Minimal option.
- Click Apply and then OK.
- Restart your computer and attempt the Office installation again.