The File Extensions Database

.UDL File Extension

  • Developer by: Microsoft
  • Category: Database Files
  • Format: Text

What is an .UDL file?

.UDL is Microsoft Universal Data Link File

Universal Data Link (UDL) file used by Windows applications for specifying connection information to a data provider; defines the data provider type, the connection string, user name and password, and other properties, such as connection timeouts; can also be used for testing a connection to a data source.

UDL files can be edited using a Windows built-in utility called Data Link Properties. They can also be edited using a text editor since they are saved in a plain text format.

You can create a UDL file by creating a blank text file and changing its extension to ".udl." To edit the resulting file, double-click it in Windows, which will open the Data Link Properties dialog box.

Programs that open Microsoft Universal Data Link File
Microsoft Data Link Properties
Microsoft Visual Studio 2017

How to solve problems with UDL files

  • Associate the UDL file extension with the correct application. On :
    Windows: Right click on any UDL file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.UDL files". Mac: Right click (or Ctrl-click) the UDL file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .UDL is Microsoft Universal Data Link File. Because only the current version supports the latest UDL file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .UDL is Microsoft Universal Data Link File update.
  • To make sure that your UDL file is not corrupted or virus-infected, get the file again and scan it with antivirus software.