If you lose your legitimate key, use the ESET License Recovery Tool to have it resent to your registered email. 💡 Pro-Tips for Trial Users

, you are likely trying to test its premium features—like ransomware protection, UEFI scanners, and cloud-powered scanning—before committing to a full subscription.

IT professionals often use an as a "second opinion" scanner. Even if you already have another antivirus (like Windows Defender), you can temporarily install ESET to perform a deep, offline scan of a potentially infected machine. Because ESET uses different virus definitions and a unique scanning engine, it often catches threats that the primary antivirus misses.

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For more detailed technical steps, you can refer to the official ESET Support Knowledgebase