Original Equipment Manufacturers (OEMs) often hosted customized ESXi 5.5 images with bundled drivers for their hardware. Some OEM support sites may still offer these ISOs to registered customers with valid service tags.
There is a famous piece of VMware lore involving version 5.5. In , VMware released ESXi 5.5 Update 1 . It was supposed to be a standard stability update, but it quickly turned into a nightmare for sysadmins. vmware esxi 5.5 iso download
ESXi 5.5 had several updates. Each update includes critical driver fixes and security patches (up to the EOL date). The most stable and final release is . In , VMware released ESXi 5
Even verified ISOs from untrusted sources can harbor bootkits. Run a scan using updated antivirus (e.g., Windows Defender Offline, ClamAV, or Malwarebytes). Each update includes critical driver fixes and security
It does not receive security patches or bug fixes. Using it in 2026 exposes your environment to unpatched vulnerabilities that modern hypervisors have already solved. Management Frustration: