There is a number of program that use files with the .key extension. Take a look at this website, maybe something that is familiar to you http://filext.com/detaillist.php?extdeta…
Often it is a license file. For example to be used to unlock an antivirus program from trial/demo mode to the full version.
Sometimes it helps to open the file with a text editor. The content could give you clues as to what the file is for (right-click, open with > Notepad)
Search for Related Topics
open wt library ipad open iphoto files windows xp open pantusro silkroad accounts time pc opening samsung .vmg sms backup pc open .pfv file pps window pc 2 iphoto libraries mac dont open iphoto library ifunbox bootcamp iphoto library migrate iphoto library synology nas access iphoto library c++ migrating iphoto library computer exlib open pc
mkv repair avi konwektor mp4 na online 2n05 download driver elsys ewu lan usb utility wireless box excel insert tick torrent 42 dynamic gta iv library link located ordinal xlive.dll .dat gom player playlist