License Key Vmware Esxi 5.5 Jun 2026

Symptom: "The license key entered is invalid for this product"

The license key you apply dictates which hypervisor capabilities are unlocked. vSphere 5.5 is divided into several commercial tiers alongside a highly popular free tier. vSphere Hypervisor (Free Edition)

Then, at 2:38 AM, surrounded by empty coffee mugs and the wrappers of exhausted energy bars, he found a thread. A comment from a user named unlocker_god on a defunct overclocking forum. The post was nine years old. It contained a single line:

: Recent updates to the Broadcom Support Portal mean that standard registration for ESXi 5.5 is no longer an option for new users. license key vmware esxi 5.5

VMware ESXi 5.5 License Keys: Status and Solutions in 2026 VMware ESXi 5.5 is an obsolete version that reached its end of general support on September 19, 2018, and end of technical guidance on September 19, 2020. As of 2026, obtaining new or free license keys for this version is not officially supported by Broadcom. explorevm.com

VMware ESXi 5.5 follows a per-CPU socket licensing model. A single license key covers a designated number of physical processors (CPUs) installed on a motherboard. There are no restrictions on the number of physical cores or the amount of RAM per socket in ESXi 5.5, a significant divergence from the vRAM entitlements briefly enforced in vSphere 5.0. Evaluation Mode vs. Free vs. Paid Licenses

It’s also worth noting that if you convert a host to a paid license and then switch back to evaluation mode later, you will only get the remaining days from your original 60-day trial. Symptom: "The license key entered is invalid for

Type or paste your 25-character alpha-numeric alphanumeric key (Format: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX ).

Managing a license key for ESXi 5.5 is an administrative task, but understanding its structure and purpose is key to maintaining a stable virtual environment. Whether you are using a perpetual free license for a home lab or a legacy paid license in production, the key serves as the gateway to the software's capabilities and support.

No. Each license key is tied to a specific number of CPUs as per its capacity. While you can assign a license that has enough remaining capacity to cover the CPUs on multiple hosts, the free ESXi license is typically limited to a single physical host with up to 2 physical CPUs. VMware's per-processor licensing model counts each physical CPU socket. A comment from a user named unlocker_god on

Are you setting up a or managing a legacy business server ? Do you already own a 25-character key , or

VMware originally offered a free version of ESXi 5.5, but it required a unique key obtained through a Broadcom/VMware account.

user wants a long article about "license key vmware esxi 5.5". I need to cover various aspects: license key format, activation, how to get a free license, differences between free and paid versions, how to enter license keys via vSphere Client, trial periods, expiration, license assignment to hosts, VMware vSphere 5.5 licensing in general, and possibly looking up existing licenses in ESXi 5.5. I'll search for these topics. search results include some potentially useful pages. I need to open them to gather detailed information. I'll open results 0, 1, 2, 3, 4, 5, 6, 7, and 8 from the first search, results 0, 1, 2, 4, 5 from the second search, results 2, 3, 5 from the third search, result 0 from the fourth search, results 0, 1, 3 from the fifth search, results 0, 1, 2, 7 from the sixth search, and results 0, 4, 5 from the seventh search. search results provide a good amount of information. I will now synthesize this into a comprehensive article. The article will cover the importance of licenses, license key formats, types of licenses, step-by-step activation guides, obtaining free licenses, evaluation and expiration, locating license keys, and frequently asked questions. I will structure the article with an introduction, sections for each of these topics, and a conclusion. I'll cite the relevant sources. article provides a complete guide to everything you need to know about licensing for VMware ESXi 5.5, from understanding the license structure to a step-by-step activation process. As this hypervisor is now a legacy product, this information is especially valuable for maintaining and troubleshooting existing systems.

There are several ways to look up the license key that is currently activated on an ESXi 5.5 host. The most straightforward methods are:

Tailored for larger data centers optimizing resource allocation. Includes all Standard features.