The only way of identifying the culprit responsible for the issue is to systematically uninstall every IObit product until you see that the issue is no longer occurring.

A conflict with an IObit software – A lot of users have reported that this particular issue appeared due to some incompatibilities produced by a few software products released by IObit.

In this case, you should consider a Microsoft toll capable of dealing with such scenarios.

Corrupted registry keys or installation files – Another possible scenario in which this particular error will occur is if some key registry keys or files needed during the installation process of Microsoft Office are tainted by corruption.

If this scenario is applicable, you should be able to resolve the issue by either disabling the real-time protection or by uninstalling the security suite altogether.

3rd party antivirus is preventing the installer from communicating with MS servers – There are several antivirus suites (McAfee, Avast, and a few others) that are confirmed to be overprotective when it comes to letting the Office installer retrieve some necessary components over the Internet.

Based on our investigations, there are several different culprits that are known to trigger this particular issue: We investigated this particular issue by looking at various user reports and the repair strategies that the most affected users have deployed in order to resolve the problem. What is causing the ‘ Microsoft setup boots-trapper had stopped working’ error? This relatively new technology was developed in order to simplify the dependencies needed during the installation process. On Microsoft Office 2013, 2016, and 2019, the BootStrapper is responsible for the initialization of an application built using the Composite Application Library. This issue is reported to occur on multiple Windows version (Windows 7, Windows 8.1, Windows 10) and it’s confirmed to appear in conjunction with multiple Microsoft Office versions (2013, 2016, 2019) Microsoft Setup Bootstrapper has Stopped Working What is the Microsoft Setup Bootstrapper? Some users are reportedly seeing the ‘ Microsoft setup boots-trapper had stopped working’ error when trying to launch one, multiple, or all programs present inside the Microsoft Office suite.

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