File Extension Library

.PKGUNDEF File Extension

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

What is an .PKGUNDEF file?

.PKGUNDEF file extension is created by Microsoft. .PKGUNDEF has been classified as Developer Files. The format of .PKGUNDEF file is Text.

.PKGUNDEF is Visual Studio Shell File

File created by Microsoft Visual Studio, a Windows system SDK; contains metadata, much like the .PKGDEF file, but is used to exclude certain registry entries from an isolated shell application; can list multiple registries to exclude.

When the isolated shell application is run a registry key is created for the application. The registry's appearances and behavior can be modified by PKGDEF files. The PKGUNDEF files are used to remove Visual Studio shell components from the application by removing specified keys and entries.

To remove a command function in the isolated shell application, you would uncomment the line (example) [$RootKey$Packages{8D8529D3-625D-4496-8354-3DAD630ECC1B}] in the PKGUNDEF file.

The location of PKGUNDEF files in, say Visual Studio 11.0, is C:\Program Files (x86)\Microsoft Visual Studio\11.0\Common7\IDE\. It will have the same name as the corresponding PKGDEF file.

List of all softwares that can open the Visual Studio Shell File
Microsoft Visual Studio 2017

How to Open .PKGUNDEF file on different platforms

Open .PKGUNDEF File on Windows

  • Right-click a .PKGUNDEF
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .PKGUNDEF file and Select check box "Always use this app to open .PKGUNDEF files" Press "Ok"

Open .PKGUNDEF File on Mac

  • Right-click (or Ctrl + Left-click) the .PKGUNDEF file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .PKGUNDEF File on Linux

Right click on the .PKGUNDEF file, choose "Open with" and select a program from the list above

Open .PKGUNDEF File on iPhone

Select a file. If you don't see an application to open the .PKGUNDEF file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .PKGUNDEF File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .PKGUNDEF files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .PKGUNDEF files

  1. You need to update the application that you normally use to open .PKGUNDEF files. Only the latest version of the software supports the current .PKGUNDEF file format
  2. You need to check the .PKGUNDEF file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)