This is a critical "Servicing Stack" update released for Windows 7 and Windows Server 2008 R2.
Understanding and Installing Windows Update KB2533623 for 64-bit Systems
Method 3: DISM (offline image servicing)
To integrate KB2533 into a mounted WIM image for OS deployment:
Command Line Installation: If you obtain the .msu file, you can force installation by expanding it and using the Deployment Image Servicing and Management (DISM) tool : Expand -F:* C:\path\to\KB2533623-x64.msu C:\temp\
B. KB2533623
- Full Name: Security Update for Microsoft Windows (KB2533623)
- Date Released: May 2015
- Purpose: Fixes a vulnerability in the Windows Shell (MS15-052). Required for some modern software installers (e.g., older versions of Chrome, Firefox, Adobe).
- 64-bit Full File Name:
Windows8.1-KB2533623-x64.msuorWindows7-KB2533623-x64.msu
Modern Necessity: It is often a hard prerequisite for installing modern software on Windows 7, including Visual Studio 2017, newer versions of .NET Core, and certain anti-virus agents.
3.2 Why Architecture Matters
Installing the 64-bit version on a 32-bit system will result in a failure error (often 0x8007000D or "The update is not applicable to your computer"). Conversely, installing the 32-bit version on a 64-bit OS will usually fail the prerequisite checks because the OS expects 64-bit binaries for system files located in the System32 directory, which 32-bit installers do not target correctly.
Comprehensive Technical Report: Windows Update KB2533552 (64-bit)