i have a PC and in that i am running windows 7, I use to use the internet whole day, and during that period, I always surf many sites, and download too many things, but recently. I have downloaded some video files with the extension .MKV, and it is of no use longer, thus I just try to delete it, but when I do this, it shows me like the file is currently being used by windows explorer, what is the meaning of that? I have to search the solution for these on the internet also, but didn’t get any such solution. Need help, is it a virus?
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