: If the preparation screen appears stuck, official and community advice from Stack Overflow
Or, if you have extracted the contents:
Identifies locked files or incompatible third-party software before the main update starts. visual studio 2012 update 5 preparation.exe
April 11, 2026 | Category: Legacy Dev Tools
Mount the original VS 2012 ISO before running the preparation tool. : If the preparation screen appears stuck, official
At first glance, it looks like an update or a patch. But it’s actually something more specific—and important if you’re working offline.
The most typical error involving preparation.exe occurs when installing a Visual Studio update without an active internet connection. The update executable fails to contact Microsoft’s servers and then prompts the user to manually provide preparation.exe or a specific .msp file. One reported workaround is to avoid using Internet Explorer during the download phase and instead use another browser to obtain the files, then point the installer to the folder where they were saved. One reported workaround is to avoid using Internet
: Double-click on "visual studio 2012 update 5 preparation.exe" to run it. You may need to run it as an administrator.
While the update is generally safe, backing up is best practice.
Includes all previous security updates up to its release in 2015. Why You Need the "Preparation" Step (Preparation.exe)
The "visual studio 2012 update 5 preparation.exe" executable is a part of the preparation process for installing Update 5 for Visual Studio 2012. When a user initiates the installation of an update, this executable is run as part of the setup process. Its primary function is to prepare the system and the Visual Studio 2012 installation for the update.
