Inno Setup -How to keep Registry Keys after Uninstall

rajeshkumar created the topic: Inno Setup – How to keep registry keys after uninstall.
Hello,

I am have an installer running for a shareware program that has a time limit. The installer saves an obscure key in the windows registry with the install date, and I do not want this key to be removed when uninstalling, so that the user cannot simply uninstall and reinstall the program in order to circumvent the time limit.

I have tried to use custom Delphi code to write the key ( RegWriteStringValue() ) but it looks like the uninstaller removes those as well. Any ideas on how to keep the registry key (or another way to keep the original install date in the system)?
Regards,
Rajesh Kumar
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Rajesh Kumar

I’m Rajesh Kumar, a DevOps, SRE, DevSecOps, Cloud, and Platform Engineering expert passionate about sharing practical knowledge, real-world experiences, and industry best practices. I have worked at Cotocus and regularly write about technology, travel, investing, health, product reviews, and digital marketing through my various platforms.

I publish technical articles at DevOps School, travel stories at Holiday Landmark, stock market insights at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at TrueReviewNow, and SEO and digital marketing strategies at Wizbrand.