If you are running a true vintage Windows 7 machine (air-gapped from the internet) and want to keep G Data 2013 running for nostalgia, here is the manual method that worked in 2013:

Hardcore users created a disk image immediately after installing Windows and G Data. After 30 days, they would restore the entire image—a nuclear option that worked every time. Part 3: Does It Work in 2024? The Sad Reality If you are reading this article hoping to reset your G Data 2013 trial today, you need to understand the technical reality.

Every hour you spend searching for a "G Data 2013 trial reset" is an hour your PC remains vulnerable to attacks that didn’t exist in 2013. Instead, invest that energy into updating your operating system, enabling Microsoft Defender, and practicing good password hygiene.