The CHK file extension is associated with Sophos Anti-Virus, a software used to protect computer against viruses, Trojan horses and other malware. CHK file contains intercheck data for Sophos Antivirus. The InterCheck datbase is named "interchk.chk" by default.
The CHK file extension is associated with Netgear routers, used for updating the firmware. CHK file stores low-level system data.
The CHM file extension is used by ScanDisk or CHKDISK. ScanDisk or CHKDSK are parts of in DOS OS and Windows OS used to check and repair errors in file system. And they also repair physical errors on hard drive. CHM file is windows file fragment which stored in the FOUND folder after a disk scan has been performed.
The CHK file extension is associated with the Starcraft, a legendary sci-fi real time strategy from Blizzard Entertainment. CHK file contains game map used for single player campaign playing.