Notes about the PNB file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The PNB file type is primarily associated with 'Pokémon NetBattle' by Smogon. NetBattle is an online Pokémon Battle simulator! It allows you to make your team, or any team, to your specifications and battle other people online. Information about the Pokemon Trainer and team chosen, packed into one file. This format is only used when saving Trainer and team data directly from NetBattle.
Detailed information for file extension PNB:
File classification: Game
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.