How do I open a .ACCDB file on Windows or Mac?

You can open .ACCDB files using Microsoft Access, DBeaver, MDB Viewer (macOS). If you do not have native software installed, you can use OpenAnyFile's free File Identifier or convert .ACCDB to a standard format in your browser.

Is a .ACCDB file safe to open?

This format carries a safety rating of Medium Risk. Microsoft Access databases can contain embedded VBA macros

Can I convert a .ACCDB file to other formats?

Yes! .ACCDB can be converted to formats such as .EXCEL, .CSV, .SQL directly in your web browser.

What should I do if a .ACCDB file is corrupted or won't open?

If your .ACCDB file displays an invalid header or signature error, check its magic bytes hex header (Varies) using OpenAnyFile's Magic Byte Detector or follow our step-by-step file repair guide.

How do I open .ACCDB files?

You can open .ACCDB files using Microsoft Access, DBeaver, MDB Viewer (macOS).

Code & Data • MIME: application/msaccess

.ACCDB – ACCDB File Format

Q: What is a .ACCDB file?

A .ACCDB file is a ACCDB File Format associated with Code & Data. ACCDB is the default database format introduced in Microsoft Access 2007, supporting multi-value fields, attachment fields, and integration with SharePoint.

ACCDB is the default database format introduced in Microsoft Access 2007, supporting multi-value fields, attachment fields, and integration with SharePoint.

Primary Category Code & Data

MIME Type application/msaccess

Magic Bytes Signature Varies

Security Risk Rating Medium Risk

Recommended Software to Open .ACCDB

Microsoft Access

windows, mac, linux • Free

DBeaver

windows, mac, linux • Free

MDB Viewer (macOS)

windows, mac, linux • Free