Notes about the BTREE 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 BTREE file type is primarily associated with 'Mac OS HFS+' by Apple Inc.. In computer science, a B-tree is a tree data structure that keeps data sorted and allows searches, insertions, and deletions in logarithmic amortized time. It is most commonly used in databases and filesystems. HFS+ is the file system in Mac OS 8.1 through to Leopard and counting. Only visible in folders w/ Windows file sharing.
Detailed information for file extension BTREE:
File classification: Database
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.