Incorrect Release Date and Build Number in ESX 9.1 UPGRADE/METADATA.XML

Products

• VMware vSphere ESXi

Issue/Introduction

In the VMware-VMvisor-Installer-9.1.0.0100.25433460.x86_64.iso image, the /UPGRADE/METADATA.XML file does not reflect the newest release data. The XML file incorrectly states a legacy release date and build:

• <releaseDate>2026-04-18T21:01:03.432499</releaseDate>

• <build>25370933</build>

However, the official VMware ESX 9.1.0.0100 Release Notes confirm the accurate release information:

• VMware ESX 9.1.0.0100 | 05 JUN 2026 | Build 25433460

Environment

VMware ESX 9.1.0.0100

Cause

The ISO build process failed to clear legacy data, resulting in outdated release date and build number strings persisting within the /UPGRADE/METADATA.XML file.

Resolution

 

1. Acknowledge that the incorrect metadata is a known cosmetic issue. Broadcom Engineering has reviewed this and confirmed it does not cause any functional issues or failures during the upgrade or installation process.
   
   
2. Proceed with the installation or upgrade using the VMware-VMvisor-Installer-9.1.0.0100.25433460.x86_64.iso file as normal.
   
   
3. Note that the legacy data in the /UPGRADE/METADATA.XML file will be cleared and corrected in future ESX build releases.