The main cause of this error is conflicting software, like third-party antivirus programs or leftover files from older Office versions. Other possible causes include damaged system files, wrong registry entries, or compatibility issues with system settings. In this article, we will discuss different ways to solve this error.
1. Uninstall 3rd Party Antivirus (if applicable)
Antivirus software is meant to protect your system but can sometimes disrupt processes like Office installations. Removing third-party antivirus programs helps prevent them from blocking or interfering with the Setup Bootstrapper, allowing for a smoother installation. Follow this article on how to uninstall antivirus.
2. Use Microsoft Fix-It Tool
When installation errors continue, Microsoft’s Fix-It Tool can help. This automatic tool finds and fixes issues like conflicting registry entries or leftover Office files, clearing problems that stop the Setup Bootstrapper from working properly.
3. Uninstall IObit Software
Some third-party tools, like IObit software, can interfere with Office installations by changing important system files or settings. Removing IObit software helps prevent these conflicts, allowing the Microsoft Setup Bootstrapper to run smoothly for installations or updates.
4. Re-enable Task Scheduler via Registry Editor
Restoring Task Scheduler is important because it runs necessary system tasks, including Microsoft Office setup. By adjusting the registry to turn Task Scheduler back on, you can fix issues where its disabled state interrupts the setup, allowing it to continue smoothly.
5. Uninstall Office Installation & Delete the AppCompatFlags Key
Removing leftover files from old installations can resolve setup problems. Uninstalling Office and deleting the AppCompatFlags registry key removes compatibility settings that might cause the Bootstrapper to fail, providing a clean slate for reinstallation.
6. Open the Setup.exe in Compatibility Mode
Running the setup in compatibility mode helps avoid conflicts with newer system setups by simulating a compatible environment. This can fix issues caused by outdated or unsupported parts of the current operating system.
