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License Key Vmware Esxi 5.5 May 2026

Helpful Post: Obtaining a License Key for VMware ESXi 5.5

Introduction

VMware ESXi 5.5 is a popular virtualization platform used by many organizations to manage their virtual infrastructure. However, to unlock its full potential, you need a valid license key. In this post, we'll guide you through the process of obtaining a license key for VMware ESXi 5.5.

Why do you need a license key?

A license key is required to enable advanced features and support for VMware ESXi 5.5. Without a valid license, you'll be limited to the free version, which has some restrictions. By obtaining a license key, you'll be able to:

How to obtain a license key

There are a few ways to obtain a license key for VMware ESXi 5.5:

  1. Purchase a license key from VMware: You can buy a license key directly from VMware or through an authorized reseller. This is the recommended method, as you'll get a genuine license key and support from VMware.
  2. Free trial license: VMware offers a free 60-day trial license for ESXi 5.5. This is a great option if you want to test the platform before committing to a purchase.
  3. Used or refurbished license keys: You can also find used or refurbished license keys from authorized resellers or online marketplaces. However, be cautious when buying from third-party sellers, as there's a risk of counterfeit or invalid licenses.

Where to find the license key

Once you've obtained a license key, you'll need to enter it into the VMware ESXi 5.5 interface. Here's where to find the license key:

  1. vSphere Client: Open the vSphere Client and navigate to the Configuration tab. Click on Licensing and then License Keys.
  2. ESXi direct console: You can also find the license key in the ESXi direct console. Press F2 to enter the console, then navigate to Configure Management Network > Licensing.

Troubleshooting tips

If you're having trouble with your license key, here are some troubleshooting tips:

Conclusion

How to Obtain a License Key

  1. Purchase Directly: Buy directly from VMware or an authorized VMware reseller.
  2. VMware Partner Program: If you're a VMware partner, you may have access to special licensing and pricing.
  3. Upgrade from Evaluation: If you're currently in evaluation mode, you can purchase a license key through VMware's website.

3. Evaluation Mode

4. Finding a valid key today

Feature: License Key for VMware ESXi 5.5

Key Features of Licensing for VMware ESXi 5.5:

  1. Evaluation Mode: Before purchasing a license, ESXi 5.5 can be run in evaluation mode, which allows full functionality for 60 days. This period enables users to test features and plan their deployment.

  2. Per-CPU Licensing: VMware ESXi 5.5 uses a per-CPU licensing model. This means that you need to purchase a license for each physical CPU (or processor) in your server.

  3. License Levels: VMware offers different licensing levels for ESXi, which include:

    • Free: Provides basic features and limited support. It's free but has limitations on features such as vMotion and support.
    • Essentials Plus: Suitable for small businesses, offers more features than the free version, including vSphere Update Manager and vSphere Data Protection.
    • Standard: A more comprehensive set of features suitable for most data centers, including features like vMotion, High Availability, and vSphere Replication.
    • Enterprise Plus: The most feature-rich, offering advanced features like Storage DRS, Cross vCenter vMotion, and more.

  4. License Key Activation: Once you purchase a license, you'll receive a license key. This key needs to be applied to your VMware environment to unlock the features corresponding to that license.

  5. Compliance and Management: Keeping track of license usage is crucial. VMware provides tools and a web interface to manage and monitor your licenses, ensuring you're compliant.

Security Warning

Recommended Alternatives

If you need a step‑by‑step installation guide for ESXi 5.5 without licensing advice (e.g., evaluation mode), let me know and I can provide that separately.

Report: License Key for VMware ESXi 5.5

Introduction

VMware ESXi 5.5 is a popular virtualization platform used by many organizations to create and manage virtual machines. To use ESXi 5.5, a valid license key is required. In this report, we will discuss the importance of a license key for ESXi 5.5, how to obtain one, and the different types of license keys available.

Why is a License Key Required?

A license key is required to activate and use VMware ESXi 5.5. Without a valid license key, users will not be able to access the full features of ESXi 5.5, and the platform will be limited to a 60-day evaluation period. After the evaluation period expires, users will not be able to create or manage virtual machines.

Types of License Keys

VMware offers different types of license keys for ESXi 5.5, including: license key vmware esxi 5.5

  1. Free License Key: VMware offers a free license key for ESXi 5.5, which provides limited features and support. This license key is suitable for small-scale deployments and testing environments.
  2. Evaluation License Key: VMware provides an evaluation license key for ESXi 5.5, which allows users to evaluate the platform for a limited period (usually 60 days). This license key is suitable for testing and evaluation purposes.
  3. Paid License Key: VMware offers paid license keys for ESXi 5.5, which provide full features and support. This license key is suitable for production environments and large-scale deployments.

How to Obtain a License Key

Users can obtain a license key for ESXi 5.5 from VMware in the following ways:

  1. VMware Website: Users can purchase a license key directly from the VMware website.
  2. VMware Partner: Users can also obtain a license key through a VMware partner or reseller.
  3. VMware Support: Existing VMware customers can contact VMware support to obtain a license key.

License Key Features and Benefits

The paid license key for ESXi 5.5 provides the following features and benefits:

  1. Full Features: The paid license key enables all features of ESXi 5.5, including high availability, distributed resource scheduler, and vMotion.
  2. Support: The paid license key provides access to VMware support, including technical support, documentation, and software updates.
  3. Scalability: The paid license key allows users to deploy and manage large-scale virtualization environments.

Conclusion

In conclusion, a valid license key is required to use VMware ESXi 5.5. VMware offers different types of license keys, including free, evaluation, and paid license keys. The paid license key provides full features and support, making it suitable for production environments and large-scale deployments. Users can obtain a license key from VMware or a VMware partner.

Recommendations

Based on the report, we recommend:

  1. Purchase a Paid License Key: Organizations that plan to deploy ESXi 5.5 in production environments should purchase a paid license key to access full features and support.
  2. Evaluate ESXi 5.5: Organizations that are new to ESXi 5.5 should use an evaluation license key to evaluate the platform before purchasing a paid license key.
  3. Contact VMware or a VMware Partner: Organizations should contact VMware or a VMware partner to obtain a license key and for more information on licensing and pricing.

The VMware ESXi 5.5 hypervisor, while considered a legacy product by modern standards, remains a cornerstone for many homelab enthusiasts and businesses maintaining older hardware. Whether you are recovering a legacy server or building a budget-friendly virtualization environment, understanding how the license key system works for this specific version is critical.

This guide provides a comprehensive overview of licensing for VMware ESXi 5.5, the differences between the free and paid tiers, and how to manage your keys. 🔑 Understanding VMware ESXi 5.5 Licensing

ESXi 5.5 follows a "Try and Buy" model. When you first install the software, it operates in Evaluation Mode for 60 days. During this window, every feature is unlocked. Once the 60 days expire, you must apply a valid license key to continue managing your virtual machines (VMs). The Free License vs. Paid Licenses

VMware offered a "vSphere Hypervisor" (Free) edition for version 5.5. While powerful, it came with specific limitations compared to the paid "Standard," "Enterprise," or "Enterprise Plus" tiers:

vCenter Support: The free license cannot be managed by vCenter Server.

API Access: Read-only access to APIs, which limits some third-party backup tools.

Hardware Limits: While ESXi 5.5 removed the physical RAM limit (which was 32GB in version 5.0), it still limits the number of virtual CPUs (vCPUs) per VM. 🛠️ How to Add a License Key to ESXi 5.5

Since ESXi 5.5 predates the modern HTML5 web client, you will primarily use the vSphere Client (C# Windows application) to manage your license. Step-by-Step Instructions: Launch the vSphere Client and log into your ESXi host. Select the Host in the inventory sidebar on the left. Click on the Configuration tab in the main window. Under the Software section, click on Licensed Features. Click Edit (located in the top right corner). Select Assign a new license key to this host.

Click Enter Key and type in your 25-character alphanumeric string. Click OK to validate and apply. ⚠️ Important Compatibility Notes

ESXi 5.5 has reached its End of General Support (EOGS). This means:

No Security Patches: The software is vulnerable to modern exploits.

Hardware Constraints: It may not recognize NVMe drives or the latest Intel/AMD processor architectures.

Key Availability: Official "Free" keys are increasingly difficult to obtain as Broadcom (who acquired VMware) has overhauled the licensing portals. 💡 Where to Find Your License Key

If you previously owned a license but cannot find the key, you have a few options:

Broadcom Support Portal: Licenses migrated from the old MyVMware portal to Broadcom’s Customer Support Portal.

Old Emails: Search your inbox for "VMware Order" or "vSphere License."

Homelab Communities: Many users on forums like Reddit’s r/homelab share insights on managing legacy systems. Pro-Tip for Homelabbers Helpful Post: Obtaining a License Key for VMware ESXi 5

If you are using ESXi 5.5 for learning, consider upgrading to a newer version like 6.7 or 7.0 if your hardware supports it. These versions offer better web-based management and improved stability for modern operating systems. What hardware (server model/CPU) are you running this on? Do you need help upgrading to a newer version of ESXi?

I can provide specific compatibility checks or troubleshooting steps based on your setup.

If you are looking for a license key for VMware ESXi 5.5, it is important to note that this version is considered legacy software and has reached its end-of-life status. VMware (now owned by Broadcom) no longer officially provides or supports new license keys for this version. Current Status of ESXi 5.5

End of General Support: Support for ESXi 5.5 officially ended on September 19, 2018.

End of Technical Guidance: The final phase of self-help support ended on September 19, 2020.

Security Risks: Because it no longer receives security patches or bug fixes, running ESXi 5.5 in a production environment is highly discouraged as it contains unpatched vulnerabilities. How to Manage Licensing for Legacy Systems

Retrieve Existing Keys: If you previously owned a license, you can still find your historical keys by logging into the Broadcom Support Portal (which replaced the old "My VMware" portal).

Downgrading Newer Keys: In some cases, if you have a valid perpetual license for a newer version (like vSphere 6.x), the licensing portal may allow you to "downgrade" that key to a 5.x version for legacy hardware compatibility.

Free Version Availability: Broadcom has discontinued the "Free ESXi" (Hypervisor) edition. As of 2024, VMware products have transitioned entirely to a subscription-based model, and free standalone keys are no longer issued. VMware ESXi - endoflife.date

VMware ESXi 5.5 License Key: A Comprehensive Guide

VMware ESXi 5.5 is a popular virtualization platform used by many organizations to create and manage virtual machines. To use ESXi 5.5, a valid license key is required. In this article, we will discuss the importance of a license key, how to obtain one, and the different types of license keys available for ESXi 5.5.

Why is a License Key Required for VMware ESXi 5.5?

A license key is required to activate and use VMware ESXi 5.5. Without a valid license key, users will not be able to access the full features of ESXi 5.5, and their virtual machines will be limited in terms of functionality and scalability. A license key ensures that the user has the right to use the software and provides a way for VMware to track and manage its software usage.

Types of License Keys for VMware ESXi 5.5

VMware offers several types of license keys for ESXi 5.5, including:

  1. Free License Key: VMware offers a free license key for ESXi 5.5, which provides limited features and support. The free license key is suitable for small-scale virtualization needs and provides access to basic features such as virtual machine creation and management.
  2. Evaluation License Key: VMware provides an evaluation license key for ESXi 5.5, which allows users to evaluate the full features of ESXi 5.5 for a limited period (usually 60 days). The evaluation license key is ideal for users who want to test and evaluate ESXi 5.5 before purchasing a full license.
  3. Paid License Key: VMware offers paid license keys for ESXi 5.5, which provide full access to all features and support. Paid license keys are suitable for large-scale virtualization needs and provide advanced features such as high availability, distributed resource scheduler, and vMotion.

How to Obtain a License Key for VMware ESXi 5.5

To obtain a license key for VMware ESXi 5.5, follow these steps:

  1. Purchase a License Key: You can purchase a license key from VMware or its authorized resellers. You can choose from various license key options, including free, evaluation, and paid licenses.
  2. Request a Free License Key: You can request a free license key from VMware by creating an account on the VMware website. The free license key will be sent to you via email.
  3. Upgrade from a Free License Key: If you already have a free license key, you can upgrade to a paid license key by purchasing an upgrade license from VMware or its authorized resellers.

How to Activate a License Key for VMware ESXi 5.5

To activate a license key for VMware ESXi 5.5, follow these steps:

  1. Log in to the VMware Host Client: Log in to the VMware Host Client using your ESXi 5.5 server IP address or hostname.
  2. Navigate to the License Section: Navigate to the Configuration tab and click on Licensing.
  3. Enter the License Key: Enter your license key in the License Key field and click OK.
  4. Verify the License Key: Verify that the license key has been successfully activated by checking the Licensing section.

Best Practices for Managing License Keys

Here are some best practices for managing license keys:

  1. Keep Track of License Keys: Keep track of your license keys, including their expiration dates and usage.
  2. Use a License Key Management Tool: Use a license key management tool to manage and track your license keys.
  3. Renew License Keys: Renew your license keys before they expire to avoid downtime or loss of functionality.

Conclusion

In conclusion, a valid license key is required to use VMware ESXi 5.5. VMware offers various types of license keys, including free, evaluation, and paid licenses. To obtain a license key, you can purchase one from VMware or its authorized resellers, request a free license key, or upgrade from a free license key. Activating a license key involves logging in to the VMware Host Client, navigating to the licensing section, entering the license key, and verifying its activation. By following best practices for managing license keys, you can ensure compliance and minimize downtime.

This review explores the legacy of VMware ESXi 5.5, an pivotal release in the virtualization world that fundamentally changed how users approached free-tier licensing. While this version is now largely obsolete and no longer officially supported, it remains a case study in high-value hypervisor features and the start of a major shift in enterprise licensing. The Big Shift: Removing the 32GB RAM Limit

The most significant "feature" of the ESXi 5.5 license was the removal of the 32GB physical RAM limit for the free version. Prior to this 2013 release, free-tier users were capped at 32GB, which severely limited home labs and small business servers. Enable features like vMotion, Storage vMotion, and High

Impact: By lifting this restriction, ESXi 5.5 allowed users to leverage affordable, high-memory hardware without paying for a Standard or Enterprise license.

Unlimited Physical CPUs: The free license worked for single-CPU and multi-CPU hosts, allowing for significant vertical scaling on a single machine. Features and Restrictions

While the RAM limit vanished, the ESXi 5.5 free license maintained several key constraints to encourage enterprise upgrades:

Management Limitations: It could not be managed by vCenter Server. Without vCenter, premium features like vMotion and High Availability (HA) remained locked.

API Write-Access: The free license provides "read-only" API access, meaning many third-party backup tools (like Veeam) could not perform automated backups without a paid version.

Virtual SMP: A hard limit of 8-way virtual SMP (8 vCPUs per VM) was enforced. Performance and Usability vSphere 5.5 Free version licensing - physical CPU's limit

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

Here is an overview of how to manage, apply, and look for license keys for this legacy system. Can You Still Get a Free 5.5 License Key?

Officially, no. Broadcom has discontinued free ESXi license keys for old versions, and they have transitioned entirely to a subscription-based model, making it impossible to generate new perpetual keys for 5.5. Sangfor Technologies

However, if you have a legacy account that previously held a license for 5.5, it may still be viewable within your Broadcom/VMware Customer Connect portal Applying an Existing License Key

If you already possess a license key, you can apply it to an ESXi 5.5 host using one of these methods: vSphere Client (Direct Connection): Log in to the host via vSphere Client Navigate to the Configuration Licensed Features in the top right corner.

Select "Assign a new license key to this host" and enter the key. Direct Console UI (DCUI): Log into the physical console. View Support Information to view the current license serial number. , log in, and use Troubleshooting Options to assign a new license key via command line if needed. Managing Old License Keys

VMware ESXi 5.5 reached its End of General Support on September 19, 2018, and its Technical Guidance Phase

concluded on September 19, 2020. Because it is a legacy, unsupported version, obtaining new license keys directly from the official Broadcom (formerly VMware) portal is no longer possible through standard modern channels. Obtaining and Managing License Keys

VMware ESXi 5.5 reached End of General Support on September 19, 2018, and End of Technical Guidance on September 19, 2020. Because this version is legacy software, obtaining a legitimate license key from official Broadcom/VMware channels is no longer possible for new users. 1. Current Licensing Status

Availability: Broadcom has discontinued the issuance of free ESXi license keys.

Perpetual Keys: Existing perpetual license keys for ESXi 5.5 still function as they do not have an expiration date, but they are no longer sold.

Evaluation Mode: New installations default to a 60-day evaluation period with full features. After 60 days, virtual machines (VMs) will continue to run but cannot be powered on if shut down until a valid key is applied. 2. How to Retrieve Existing Keys

If you previously owned a license for version 5.5, you can still find it by following these steps:

Log into the Broadcom Support Portal (which replaced the old MyVMware portal). Navigate to the Accounts or My Entitlements section.

Select Find Serial Numbers from the dropdown menus to view historical keys associated with your account. 3. Applying a License Key to ESXi 5.5

Once you have a 25-digit key, you can activate it through the vSphere Client (Windows-based) or vCenter:

Managing VMware ESXi 5.5 in a modern infrastructure requires a solid grasp of its licensing structure, even as it enters legacy status. While ESXi 5.5 officially reached its End of General Support on September 19, 2018, many home labs and legacy enterprise environments still rely on it for specific hardware compatibility. 1. Understanding the ESXi 5.5 Licensing Model

VMware ESXi 5.5 uses a perpetual licensing model based on 25-character alphanumeric keys. Unlike modern subscription-based versions, once a key is applied, it does not expire. Free ESXi: Restrictions and Limitations - NAKIVO

Legitimate Licensing Guide for ESXi 5.5