Adobe Acrobat Document [.png]

@MahaB82A 

Check your file associations. Windows looks at the extension and associates it with an application. If/when it needs to be changed, you do it through Windows OS. Here are directions from Microsoft support:

https://support.microsoft.com/en-us/windows/change-default-programs-in-windows-e5d82cad-17d1-c53b-3505-f10a32e1894d

You will need to select a different application to open your PNGs, such as Windows Photos, Photoshop, or another image editor you have installed.

Jane