The problem is , you have an archive manager installed that has hijacked your browser download extensions . Renaming the file to . jar should work fine . What is displayed in the screenshot is the Vanilla server GUI . To avoid this , place the following command in a batch file in your server folder where your server . jar exists java . exe Xmx 2 G Xms 1 G jar minecraftserver . 1 . 11 . jar nogui pause <| sep |> Depending on your level of competence , it may take more or less time to improve . But you do need to conscious recognize at part of aiming you need improvement then focus on improving those . For example , track aiming is actually a new concept for me coming from an old school CS 1 . 6 player . I knew I needed to improve it especially as a Mccree main . I practiced on TF 2 and CSGO training maps until tracking felt comfortable , naturally that transferred to OW . The hardest part is finding a tangible way to gauge your improvements . If you can ' t gauge progress , you will seem like you didn ' t improve . I ' m sure you have improved but you don ' t realize it . Training maps that track your scores is good since you can tangibly see progress compared to maybe even a week ago . Seeing measurable progress is just as important as improving . It keeps you motivated . That ' s why weight lifters keep a journal , competitive athletes always keep track of their scores . You should always be in competition with your past self .