Once the period ends, the add-in's features are disabled unless a valid license key is entered.

Warning: Modifying the registry incorrectly can cause system instability. Press Win + R , type regedit , and hit Enter.

When you install Kutools, the software places hidden tracking files and encrypted Registry entries on your Windows operating system. These markers log the exact date of installation to enforce the 30-day trial limitation.

To let users test these features, the developer (ExtendOffice) provides a fully functional free trial period, typically lasting 30 days.

While these methods are often shared on tech forums, it is important to note that they are not officially supported by the developer, ExtendOffice

Simply uninstalling and reinstalling the software from the official ExtendOffice site usually does not reset the trial, as activation details are often stored locally outside of the standard Office path. Methods Often Associated with "Trial Resets"

: Downloading executables from unverified sources can expose your computer to ransomware, spyware, or trojans.

Encrypting your valuable Excel spreadsheets and demanding payment.

To understand how a "trial reset" works, it is important to look at how modern desktop software monitors evaluation periods. When you install Kutools, the software does not simply look at your computer’s system clock; developers know that users could easily roll back their calendar dates to bypass restrictions.