Visual Studio Packaging: Another version of this product is already installed

Question

Hi All,

I have a msi created for a project which uses C# & Jscript. version-1.0 is currently public. I want to release a bug-fixed version v-1.0.1 of this package but while testing it, I am getting "Another version of this product is already installed Installation of this version cannot continue.To configure or remove the existing version of this product, use Add/Remove program on the Control Panel".

I want this bug-fixed version to install silently without asking user to uninstall and install new one. Please help me how can I achieve this, I am using visual studio 2008.

Thanks in Advance!

Sam

Update: I have tried changing the package code but that creates two instances of the package using same working directory. Visual Studio geeks please help.

Answer 1

You must specify the UpgradeCode and increment the ProductVersion to update a product. The UpgradeCode will remain the same for newer versions.

The UpgradeCode property indicates a family of related applications consisting of different versions and different language versions of the same product.

This article explains the ProductCode, ProductVersion and UpgradeCode:

http://msdn.microsoft.com/en-us/library/aa370837%28v=VS.85%29.aspx

Answer 2

I would follow this process

In your main project

• Increment your Assembly Version no.

In your Visual Studio Setup project

• Set "Remove Previous Version" to true
• Increment the Version No. (this will change the product code for you too)