.SDF File Extension

File Type:
SQL Server Compact Database File

Having trouble opening .sdf extension? Don't panic! This page explains what sdf files are as well as suggests programs you may use to open sdf files. You can download these programs through this page.

What is a SDF file?

Sdf file extension has SQL Server Compact Database file type, developed by Microsoft, which is associated with the "database files" category.

Database file provides contents of a database. It may be rather large in size, with the maximum of up to 4GB. It may be accessed by applications for both desktop and mobile devices. 

To learn how you can open the given file, read the information below.

sdf file icon
File Type:
SQL Server Compact Database File
Database Files

How to open SDF file?

Double click the sdf file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .sdf extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the sdf extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the sdf file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open SDF files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the sdf file as well. Download Universal File Viewer for your OS.

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