It is common to lose the .key file. Do not panic. Here is what you do:
If you are looking for the license key file after activation (for example, to back it up or see where it is stored), it is hidden deep within the system folders.
Default Locations: Kaspersky stores the license information in encrypted formats or registry keys, not as simple readable text files. However, the cached license files are typically found here: kaspersky license key file location install
Why you cannot copy/paste key files:
In modern versions of Windows, the ProgramData folder mentioned above is protected by the operating system. Even if you copy a license file from one computer to another, it will usually fail to work because the license is tied to the specific hardware ID (HWID) of the computer where it was first activated.
Store your original .key files in a secure network share (e.g., \\server\licenses\kaspersky\) along with a backup on removable media. Do not rely on finding them after installation. It is common to lose the
For Kaspersky Internet Security for Mac (old versions):
| Path |
|------|
| /Library/Application Support/Kaspersky Lab/KAV/Licenses/ | Why you cannot copy/paste key files: In modern
Newer macOS versions store keys inside the app sandbox and do not expose .key files directly.