This is 100% legitimate for testing but impractical for daily use on your main OS.
Three to four years ago, the most common method for an ESET Internet Security reset trial involved cleaning specific Windows Registry entries and deleting hidden license files. Here is how that used to work (note: ESET has patched many of these loopholes).
If you have lost your legitimate license key, use the ESET Lost License page to have it resent to your registered email. Unofficial Trial Reset Methods
ESET does not have a free tier, but (built into Windows 11) now rivals paid antivirus in independent lab tests (AV-Comparatives, 2025). If budget is the issue, uninstall ESET and let Defender run. It is free, always updated, and never asks for a trial reset.
This is 100% legitimate for testing but impractical for daily use on your main OS.
Three to four years ago, the most common method for an ESET Internet Security reset trial involved cleaning specific Windows Registry entries and deleting hidden license files. Here is how that used to work (note: ESET has patched many of these loopholes).
If you have lost your legitimate license key, use the ESET Lost License page to have it resent to your registered email. Unofficial Trial Reset Methods
ESET does not have a free tier, but (built into Windows 11) now rivals paid antivirus in independent lab tests (AV-Comparatives, 2025). If budget is the issue, uninstall ESET and let Defender run. It is free, always updated, and never asks for a trial reset.