Offline installation

What could the reasons WSA PacMan will not open an APK file? When I am trying to open my APK file the button Install is gray out

Pac Man 2 Maze Offline Game Free APK download for Android Pacman 2 Endless Maze Offline Game Free

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pacman offline A Fun Game of PacMan A free offline version of pacman that you can pop up and play anywhere, anytime without any ads To play the game: 1 install the