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Windows 10: What is Modern Setup Host (SetupHost.exe)?

  • Oct 30, 2025
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You may find the "Modern Setup Host" process as an entry in the task manager under Windows 10. Here we explain what it is all about.

Windows 10 - this is Modern Setup Host

Modern Setup Host is installed with the Windows operating system.

  • Usually you dont notice anything from Modern Setup Host. The process will not become active until you download and install a Windows Update .
  • The process was developed by Microsoft. Therefore, the process only appears in the task manager during the installation of an important update.
  • However, Modern Setup Host is very resource intensive. As a result, the performance of your system may drop sharply.
  • If the resources are not sufficient for the Windows component during a comprehensive update, a system crash can result .
  • You can avoid this by closing unnecessary processes in the task manager or temporarily disabling processes. These can be notifications or background apps, for example.

Do not disable Modern Setup Host

Modern Setup Host is an important Windows component that you should not disable.

  • As already mentioned, Microsofts Modern Setup Host is only active during the installation of an update.
  • The component is automatically installed with Windows, so a third-party download is not necessary. This would also pose a risk that the file is either corrupt or malware hiding behind it.
  • Its quite easy to determine whether Modern Setup Host really came from Microsoft and was installed.
  • To do this, check the location of Modern Setup Host. If it is from Microsoft, you can find it in the $WINDOWS.~BT/Sources folder on the drive where you installed Windows. To find the folder, you need to Show hidden files on Windows 10 .
  • To make sure the file is safe, right-click it and select "Properties" from the context menu.
  • Under the "General" tab, check if the path is correct. The file should be in the $WINDOWS.~BT/Sources folder.
Windows 10 - Modern Setup Host important for updates Image: Nicole Hery-Mossmann

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