SmartScreen filter, introduced by Microsoft,
is present in Internet Explorer.
It was developed to provide better security to IE users.
Microsoft has implemented the same mechanism in its latest
OS, Windows 8 and later.
If you try to run a downloaded program or compressed file from
Internet, it checks the file and if it finds an unrecognized
app, it blocks the program and shows a message on screen.
you click on Dont run button, the program execution is
SmartScreen filter shows the same warning message for almost
all 3rd party programs which are downloaded from Internet.
The file Install_Picture_Lab.exe is safe, you can click
on More info link, given in the message and
itll provide 2 buttons: Run anyway
and Dont run.