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IT Support & Hardware · Foundational

End-of-Life (EOL)

The point at which a vendor stops selling, supporting, or patching a product.

Definition

End-of-life (and end-of-support) products no longer receive security updates, creating risk. Organizations plan replacements or compensating controls such as isolation. Lifecycle pages from vendors list EOL dates.

Example

Windows 10 reached end of support on October 14, 2025.

Exam tip

EOL systems are vulnerable; upgrade, replace, or isolate them.

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