For more detailed technical information and direct download links to the Microsoft patches, please review the official .
If you are following KB 78708 and run into hurdles, consider the following:
VMware Knowledge Base article 78708 states that Windows 7 SP1 and Windows Server 2008 R2 SP1 guests require the Microsoft SHA-2 security update (KB4474419) to install VMware Tools 11.x and later, as shown in studies and community discussions. A potential feature to address this is an automated pre-check that scans for this specific KB, identifies the guest OS, and prompts the user to install the update if missing. Read the full details on the Broadcom site at Broadcom Support Knowledge Base . VMware tools fail to install on Windows 7 Guest | Fusion
Starting , Microsoft transitioned exclusively to the SHA-2 code-signing algorithm for all software updates and drivers. Because modern versions of VMware Tools are compiled and signed strictly using SHA-2, legacy Windows guest operating systems that lack built-in SHA-2 support cannot read or authenticate these new digital signatures. Consequently, Windows blocks the VMware driver installation as a security precaution, triggering an upgrade failure. The Solution Provided by KB 78708 kbvmware s article 78708 free
After a bit of digging, I found (free access, no login required for basic viewing).
This comprehensive technical guide explains the underlying mechanics of KB 78708, why driver verification failures happen, and the exact step-by-step methods required to deploy the necessary free fixes to restore full functionality to your legacy virtual environments. The Core Problem: Why VMware Tools Fails to Install
According to the content of KB 78708 and numerous official VMware release notes, the problem stems from a fundamental change in Windows security policy made by Microsoft. . For more detailed technical information and direct download
provides the official fix for an error where VMware Tools installation or upgrades fail on legacy Windows virtual machines , specifically Windows 7 SP1 and Windows Server 2008 R2 SP1 . This widespread infrastructure roadblock stems entirely from a shift in how modern software verifies system drivers.
The setup wizard will now pass the driver verification phase smoothly, installing vmxnet3, pvscsi, and SVGA drivers without warning prompts. Alternative Solutions: Frozen Tools Packages
To fix this issue, you must manually install the Microsoft updates that enable SHA-2 code signing support in Windows 7. outlines the necessary Microsoft Knowledge Base (KB) articles you need. Prerequisites Windows 7 Service Pack 1 (SP1). Windows Server 2008 R2 SP1. Read the full details on the Broadcom site
Comprehensive Troubleshooting Guide: Resolving VMware Tools Installation Failure via KB 78708
Accessing Article 78708 is easy. Simply follow these steps:
Note: If you are running standard Windows Server 2008 (non-R2) SP2 or Windows Vista SP2, you will hit a separate limitation detailed in VMware KB 75163, which blocks VMware Tools versions 11.1 or higher entirely. Step 2: Download the Free Microsoft Security Patches Go to product viewer dialog for this item. VMware vSphere 8 Enterprise Plus
The primary solution, as documented in KB 78708, is to that add SHA-2 code signing support to legacy Windows systems.