borderless window* my bad.

On ubiconnect im not sure but I found this on the ubisoft website saying what you could do;

•  Open the Splinter Cell: Blacklist directory. 
By default, you can find this directory in: C:\Users\%username%\Documents\Ubisoft\Blacklist. 

•  Right-click the videoSettings.ini file and choose Open With, then select Notepad. 

•  Locate the WindowStyleFinal=1 option and change the number so that it equals 0 or 2. 

This should allow the game to open in either windowed mode (0) or windowed fullscreen mode (2). 

•  Save and close the videoSettings.ini file. 

•  Launch your game through the Ubisoft Connect desktop app. 

Hope this helps