An ate file extension is related to the Microsoft Office Accounting and used for its database backup files.
ATE file extension - Microsoft Office Accounting compressed backup
What is ate file? How to open ate files?
File type specification:
The ate file extension is associated with the Microsoft Office Accounting for Microsoft Windows. The ate file contains compressed account database backup.
Microsoft Office Accounting is discontinued product. It was discontinued in 2009.
This ate file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.