I noticed something strange on my Windows 10 PC and I'm wondering if someone can explain.
Strange Observation
When I select Properties
> Change
on a .jpg or .png file and view the list of available applications, there is an application simply labeled "%1"—double quotes included.
This option is not listed for .pdf, .docx, .mp4, .pptx, or any other non-picture file types as far as I can tell although I have not checked .gif and maybe other file types.
I have searched for this application in my system files and cannot find it. This option is also not available in the regular Open With
... list—it only appears in the Change list. I have not tried to open any file with this application in case it is harmful since I don't understand why this is there.
Question
Can anyone explain what is this, how to prevent it, or find out further details about what it might be?
%1
means "the first command line parameter". (google: command line param in batch file). As to how it made it into the list, no idea.