This post shows the causes of the error and some methods to fix the error.

Get these methods fromMiniTool.

What Is Microsoft Setup Bootstrapper?

Microsoft Office 2019 Is Being Removed from Home Use Program

What is Microsoft Setup Bootstrapper?

So after knowing the causes of Microsoft Setup Bootstrapper has stopped working, then how to fix it?

Keep reading, the solutions are below.

change the Value data to 4

Here is the tutorial:

Step 1: Press theWinkey andRkey together to open theRunbox.

Step 2: Typeappwiz.cplin the box and then clickOK.

Then follow the instructions showing on the screen to remove the software from your PC.

delete AppCompatFlags key

Step 3: Navigate toComputer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Schedule.

Step 4: After you have selectedSchedule, double-clickStartin the right panel.

Step 5: Change theValue datato4and selectHexadecimal.

Here is the tutorial:

Step 3: Right-clickAppCompatFlagsto chooseDelete.

Step 1: OpenFile Explorerand then go to the location of theOffice Installation.

Step 2: Open theInstallationfolder, right-click onSetup.exeto selectTroubleshoot Compatibility.

Step 3: In theProgram Compatibility Troubleshooterwindow, click onTry recommended prefs.

Step 4: ClickTest the programand see if the setup is opening without the oops message.

Step 6: launch the installer again and complete the installation process.

Whats more, you could get solutions to solve the problem.