.CHK File Extension

A .CHK file is a Saved File Fragment, created by Sophos.

Open with Sophos Anti-Virus (Discontinued). Available for Linux, Windows, and Mac.

What is a .CHK file?

A .CHK file is a type of saved file fragment specifically used by Sophos Anti-Virus software. This file stores virus definitions, which are crucial for the antivirus program to identify and deal with various viruses. The .CHK file gets updated through a service called InterCheck. InterCheck regularly checks a central system that collects reports on new viruses, ensuring that the .CHK file always has the latest information.

Users can adjust how this file works by changing the settings for the InterCheck reporting level and the syslog (system logging) configurations. This means you can control the detail of virus reporting and logging based on your needs.

However, it's important to note that the ability to open or use .CHK files directly is limited because the programs that could originally open these files, all versions of Sophos Anti-Virus, have been discontinued. This means that there are no current programs officially supported to open .CHK files. If you have this file type, it is likely part of an older system that used Sophos Anti-Virus.


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