The File Extensions Database

.UDB File Extension

  • Developer by: Microsoft
  • Category: Database Files

What is an .UDB file?

.UDB is Dynamics AX User Database File

Database file used by Microsoft AX business management software; contains a list of users, the Component Object Model (COM), and the Application Object Server (AOS); also includes database connections and the types of connections.

NOTE: UDB files are used by Microsoft Dynamics AX 3.x.

Programs that open Dynamics AX User Database File
Microsoft Dynamics AX

How to solve problems with UDB files

  • Associate the UDB file extension with the correct application. On :
    Windows: Right click on any UDB file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.UDB files". Mac: Right click (or Ctrl-click) the UDB 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 .UDB is Dynamics AX User Database File. Because only the current version supports the latest UDB file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .UDB is Dynamics AX User Database File update.
  • To make sure that your UDB file is not corrupted or virus-infected, get the file again and scan it with antivirus software.