This is something that happened while using IE 11 on Win 7 x64. Not sure if it matters but IE is running in "Protected Mode".
I was posting a support request for a software that I use at that software vendors site and clicked on the browse button to add a screenshot (from my desktop) to the request. When Windows Explorer opened, the following message was displayed:
I had submitted the other support request to the same vendor's site earlier the same day, also with a screenshot, without receiving any warning like this.
Update: Not sure if it matters but the vendor, in this case, was Reallusion (a maker of animation software). They do not provide any software through git to regular end users and I had already attached a screenshot to another ticket on their site earlier this same day (without this kind of message).
Would anyone know why this error happens and if it is related to browsing the file system from IE?
Also is there a way to find out if this notification actually originates from the currently browsed website (or if it was caused by some other process and just coincidental that the message popped up when it did)?