How to open .PBXUSER file extension?

If you cannot open a new file that has been saved in the .PBXUSER format you need to download the appropriate software. The manufacturer of .PBXUSER files is Apple; .PBXUSER files belong to the Developer Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .PBXUSER files. Activities performed in the order described should solve the problems with all the files in the .PBXUSER format.

• What is .PBXUSER file?
• How to open .PBXUSER file?
• What is .PBXUSER file?