If you've been staring at a failed backup job for your vCenter Server Appliance (VCSA), you aren't alone. One of the most frustrating errors occurs when the backup mechanism fails due to snapshot limitations or stale snapshot references.
VMware KB 78708 outlines a simple, two-step process to resolve this issue. The core of the solution is to update the guest Windows 7 operating system you attempt to install VMware Tools:
If your enterprise environment strictly prohibits modifying the legacy guest OS with new Windows updates, you cannot run modern versions of VMware Tools. Your alternative option is to freeze the VM on an older version of VMware Tools that still utilizes SHA-1 driver signatures. VMware tools fail to install on Windows 7 Guest | Fusion
To access KBVMware Article 78708, simply visit the VMware website and search for the article number in their knowledge base. You can also try searching for the article title or keywords related to the issue you're experiencing. kbvmware s article 78708 free
In the vminstall.log file, you might see error messages such as:
Search for . Select the architecture matching your guest VM (e.g., 2019-09 Security Update for Windows 7 for x64-based Systems ). Download the .msu file.
In late 2019, Microsoft transitioned its driver signing process to use the exclusively, phasing out the older, less secure SHA-1. Modern versions of VMware Tools (starting with version 11.x) are signed with SHA-2. If you've been staring at a failed backup
However, system administrators and hobbyists frequently encounter a roadblock when deploying or upgrading legacy systems. The SHA-1 to SHA-2 Code Signing Transition
The primary solution, as documented in KB 78708, is to that add SHA-2 code signing support to legacy Windows systems.
If you are running into this issue on a specific version of vSphere or Workstation, let me know, and I can provide more tailored steps. VMware tools fail to install on Windows 7 Guest | Fusion The core of the solution is to update
The vCenter Server Appliance is a Linux-based virtual machine with several dedicated partitions. Over time, these areas can fill up due to:
VMware Knowledge Base (KB) articles are essential resources for troubleshooting common issues in virtualized environments. One particularly valuable article is , which addresses a significant compatibility problem: the failure of VMware Tools to install or upgrade on older Windows operating systems. This article serves as a comprehensive guide to understanding and resolving this issue, drawing directly from the official VMware KB article and related community resources.
: The Servicing Stack Update (SSU) required for handling SHA-2 certificates smoothly.
How to Fix VMware Tools Installation Failures on Legacy Windows (KB 78708)
Visit the official Microsoft Update Catalog for each update:
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