I wrote a custom installer class  in VB.NET for Windows application and in Install method I am calling a dll which shows a dialog box with OK and Cancel buttons on it. If user clicks cancel button,  setup should be rolled back. When user clicks cancel button, Setup is rolling back but a message box showing error no and description is displayed.

"The Installer has encountered an unexpected error installing this package. This may indicate problem with this package. The error code is 2869."

I don't want to display above dialog box. I don't know from where it comes. Can anybody help me?

1. You may not have sufficient priviliges to run the Setup. Try under admin mode.

2. Check the event log, that might throw you the real picture for this error message.

3. The rollback script could not be able to roll back completely due to various problems like security permissions etc.

try executing the package from command prompt as an administrator like this:

The quick solution is install and create a batch file with the following command:

msiexec /i "path-to-package.msi"

Save the file then right-click it and select "Run as Administrator". That makes it work.

The reasons this error shows up is ultimately because Windows Vista now enforces the original architectural intent of the "NoImpersonate" attribute bit, as Robert Flaming explains in his blog posting:
http://blogs.msdn.com/rflaming/archive/2006/09/23/768248.aspx

Omar Shahine describes the error message situation in more detail in his blog posting:
http://www.shahine.com/omar/VSTOAddinsAndVista.aspx

Aaron Stebner summarizes the installer problem well, and describes the necessary steps to solve the problem by correctly setting up installer custom actions correctly in Visual Studio:

Question: I have built an installer using the Visual Studio 2005 setup project wizard. It installs correctly on Windows XP but fails on Windows Vista. I investigated and found that the failure on Windows Vista is caused by a custom action that fails with an access denied error. However, I am running the setup with elevated privileges in Windows Vista. How can I fix my setup so it will work correctly on Windows Vista?

http://blogs.msdn.com/astebner/archive/2006/10/23/mailbag-how-to-set-the-noimpersonate-flag-for-a-custom-action-in-visual-studio-2005.aspx

1. Copy the .MSI file to the root directory of your main hard drive (i.e. C:\).
2. Open Windows Notepad.
3. Copy this text into windows notepad:
   msiexec /i "C:\program_name.msi"
4. Replace the text "program_name" in the code that you copied with the actual name of the .MSI file (for example, aura.msi).
5. Click File -> Save As...
6. Instead of saving it as a .txt file, change the file name to installer.bat.
7. Save the file to your desktop
8. On your desktop, right click on the file (see screenshot below) and select Run as Administrator.

By creating a .BAT file and launching it with the "Run as administrator" function in Windows Vista, the .MSI file should install correctly.

This solution should launch the .MSI file and allow the installation procedure to successfully finish. You should repeat this process for each .MSI file that has an error code 2869 during the installation.

Sources:

• Dave Glover - Tip: Deploying Windows Mobile Applications from Vista with MSI Installers
• Windows Installer MSI packages error code 2869 on Windows Vista