VMware Cloud Foundation 4.3 EOL: October 2023 Action Plan

VMware Cloud Foundation 4.3 reaches End of Life (EOL) and End of Active Support on October 31, 2023. As this is not a Long Term Support (LTS) release, the latest version in this line, 4.3.1, shares the exact same cutoff date.

With roughly three months remaining, executing a complete migration to a newer, supported release before the deadline is no longer a realistic objective for most enterprise estates. Instead, IT infrastructure managers must shift focus toward risk mitigation, ensuring systems remain secure, compliant, and operational on day one after EOL.

What Changes on October 31, 2023?

When active support terminates for VMware Cloud Foundation, the vendor will no longer provide:

• Security patches and vulnerability remediation
• Bug fixes for operational defects
• Vendor Service Level Agreements (SLAs) for technical support

Running unsupported infrastructure software exposes your environment to unpatched exploits and can immediately impact compliance standing with industry regulators and cyber insurance providers.

A Realistic Action Plan: The Final 12 Weeks

Since a full upgrade is off the table for the immediate term, use the remaining time to lock down your deployments and establish alternative maintenance channels.

Weeks 1-4: Comprehensive Inventory

Identify exactly where VMware Cloud Foundation 4.3 and 4.3.1 reside in your environment. Look beyond primary data centers to edge locations and disaster recovery sites. Map all dependent workloads running on these clusters to assess your precise risk exposure.

Weeks 5-8: Isolation and Documentation

Begin hardening the affected systems. Restrict network access to the management plane, implement strict firewall rules, and disable unnecessary services to reduce the attack surface. Concurrently, document these compensating controls. Your auditors and cyber insurance providers will require proof that you have acknowledged the EOL date and actively mitigated the resulting risks.

Weeks 9-12: Establish Third-Party Maintenance

The most critical step in operating past a vendor EOL date is ensuring you still have access to expert troubleshooting and operational guidance. Securing a third-party support contract guarantees that if a critical failure occurs on November 1, you have guaranteed SLAs and experienced engineers ready to assist.

Extending the Life of Your Infrastructure

A vendor's lifecycle schedule should not force a rushed, high-risk migration. Partnering with a third-party maintenance provider allows you to keep your products running safely past the vendor's dates, giving your team the breathing room to plan a migration on your own terms.

Learn more about our VMware maintenance capabilities, or contact us to line up your support contract before the October 31 deadline.