What is the .DSN File Extension?
.DSN File Extension Description:
Files with the .dsn extension refer to the ODBC or Open Database Connectivity connection that Microsoft applications request from an ODBC source. DSN files, developed by Microsoft Corporation, represent links for requested application-ODBC connections.
ODBC manager configures and sets up ODBC data sources, and is installed through Microsoft Office. Details of the connection that .dsn files hold includes the name of the database, directory, user ID, database driver, password, and so on. DSN files have three types that can be configured and set up using an ODBC manager. These types are User DSN, System DSN, and File DSN.
User DSN files are a user-specific data source, which are locally stored but only available to the user that created the DSN file. These .dsn files are not used by queries and the information they hold are stored in the Windows registry. The keys under which these files are stored usually are HKEY_CURRENT_USER/ Software/ Odbc/ Odbc.ini/ Odbc Data sources.
System DSN files are a non-user-specific, and stored locally but can be used throughout the system. Any logged-in user that can access an ODBC data source can use .dsn System files. Specific Windows programs that use System DSN files are Microsoft Internet Information Server, or IIS, and Microsoft Sequel Server. DSN files classified as System are created in the location of the program, and are saved in Windows Registry under the key HKEY_LOCAL_MACHINE/ Software/ Odbc/ Odbc.ini/ Odbc Data sources
File DSN files are locally created and shared throughout with other users. It is file-based, meaning, files with the .dsn file extension hold in all the information that is needed to connect to a specific data source. File DSN files are saved in a default directory: Program Files/ Common Files/ Odbc/ Data Sources folder, and not in the Windows registry. This type of .dsn file is viewable using any text editor.Author: Microsoft Corporation
Author URL: http://www.microsoft.com
Related Applications: Microsoft Access:, Microsoft Excel
Common Path: n/a
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Do you have errors with .DSN files?
The General Cause of .DSN files Errors:
.DSN files errors are potential severe Windows file system errors and can be caused by a damaged program registry that should be repaired right away to prevent additional damage in other software and/or hardware. While the errors remain your system remains capable of possible blue screen errors, system failure and fatal crashes.
Symptoms of .DSN files Errors:
Typical symptoms from .DSN files errors include slower computer speed, extended program start up speed, problems accessing documents, extended breaks in program routines, software ends without showing an error, screen halts and programs crash.
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