KLQ File
What are KLQ files and how to open them
Are you having problems opening a KLQ file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your KLQ files.
What is a KLQ file?
A .KLQ file is a Kaspersky Anti-Virus Quarantined file.
Kaspersky Anti-Virus Quarantined (.KLQ) files are special encrypted files used by Kaspersky security software to safely store malicious or suspicious objects after detection. When Kaspersky detects a file it cannot immediately disinfect or which is classified as probably infected, it removes it from regular access and moves it into quarantine, storing it in this format. Such files no longer pose a threat while kept in quarantine, and can be restored, analyzed further, or permanently deleted using the Kaspersky program.
These files are created and managed by Kaspersky software such as Kaspersky Anti-Virus (including for Windows, Mac, Linux) and Kaspersky Endpoint or Virus Removal tools. On Linux, for example, quarantined items are stored under a directory like "/var/opt/kaspersky/.../Quarantine" (for root) or in the user's home area, with filenames such as kaspl*.klq. Only the user account that ran the program can access them. On Windows, objects moved into quarantine are saved in encrypted form and kept separately from their original location.
Internally a KLQ file begins with a fixed header signature (in hex) 4B 4C 51 42 01 00 00 00 40 00 00 00 00 00 00 00 at offset zero (ASCII "KLQB....@") which identifies it as a Kaspersky quarantined object.
How to open KLQ files
We have identified one KLQ opener that is compatible with this specific type of KLQ file.
Programs that open Kaspersky Anti-Virus Quarantined files
 | Kaspersky Anti-Virus | Verified |
Last updated: August 7, 2026
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