CompTIA A+ Core 2 (220-1202), Domain 4, Objective 4.6 requires technicians to understand software licensing, End User License Agreements (EULAs), and Digital Rights Management (DRM). Software is not sold the way a physical object is; it is licensed. You buy the right to use it under specific terms, and using it outside those terms is a legal and policy violation. A technician who installs the wrong kind of license — or an expired or pirated one — can expose an employer to fines, audit penalties, and legal liability.
In this article you will learn the difference between valid and invalid or expired licenses, what perpetual and subscription licenses are, how personal-use licensing differs from corporate and enterprise licensing, how open-source software compares to commercial software, and what EULAs and DRM actually do.
Valid Versus Invalid and Expired Licenses
A valid license is proof that the software is being used legally, in accordance with the agreement you accepted when you obtained it. Validity depends on several factors: that the license was legitimately purchased or granted, that it covers the way you are using the software, and that it has not expired or been revoked.
An invalid license covers several situations a technician must recognize:
- Expired license — a time-limited or subscription license whose term has ended. Once expired, continued use is unlicensed, and the software may stop working, revert to a reduced mode, or nag for renewal.
- Pirated or counterfeit software — copied, cracked, or bought from an unauthorized seller. Using it is software piracy and copyright infringement.
- Over-deployment — installing more copies than the license permits, such as using a single-seat license on a dozen machines.
- Wrong license type — using a personal or educational license for commercial work, which violates the terms even if the software was obtained legitimately.
Organizations manage this through license compliance and periodic software audits, keeping records of purchased licenses and matching them against installed software. Non-compliance discovered in an audit can result in significant financial penalties. A responsible technician installs only properly licensed software and keeps documentation of the license keys and entitlements.