INTRODUCTION

This article contains information about the maximum file size of the .dbx files that are used by Microsoft Outlook Express.

More Information

The maximum file size of the .dbx files that are used by Outlook Express is 2 gigabytes (GB).

Note Although the maximum file size is 2 GB, .dbx file performance can be greatly influenced by the hardware resources on a computer. These resources can include random access memory (RAM), disk space, and processor resources.

Additionally, we recommend that you frequently back up your critical data files in Outlook Express to help prevent data loss. For more information about how to back up and restore your messages, Address Book, mail accounts, and news accounts, click the following article number to view the article in the Microsoft Knowledge Base:

270670 How to back up and recover Outlook Express data

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