Another version of this product is already installed

[MithatErsoy]

I am a new user who just started using Advanced installer. I have very simple question ( sorry if it has already been
answered on this forum before)

After having installed msi, I click on the same msi to see what sort of behaviour it shows. It comes up with
the following message:

Another version if this product is already installed
...

My question is can i change this behaviour so that when I execute the same msi, it re-installs the msi package.

I also passed the command line argument

msiexec /uninstall <msi-executable>

I expected the above to uninstall the program. Instead, it came up with the same error

Another version of this product is already installed.

Could you please clarify whether i have done something wrong during the generation of msi package?

Thanks for those who answers my query.

[Cristi]

Hi,

This error message occurs because you are trying to upgrade the installed package with a modified version that has the same ProductVersion and/or the same ProductCode. You'll have to uninstall the initial package before installing the second one.

Another option would be to use the automated upgrade feature.

Regards,
Cristi
________________________________
Cristi Costache
Advanced Installer Team
http://www.advancedinstaller.com/

[MithatErsoy]

Cristi, thanks for your reply.

It works the way you described. But, I hit another problem while following your advice.

I give you the following example to duplicate the senario

1. I have Thunderbird 2.0.0.14 installed on Windows XP client
Note: Installation of Thunderbird 2.0.0.14 is not based on msi. It used 'setup.exe', which was downloaded from Mozilla website.

2. I installed the newer version 2.0.0.17 of Thunderbird by using MSI generated by Advanced Installer. I deliberately set the installation path
to be the same as the one for 2.0.0.14. It did overwrite the files from 2.0.0.14. But, somehow, when you go to Add/Remove Programs, you will
see two programs :

Mozilla Thunderbird (2.0.0.14) (original one )
Mozilla Thunderbird (msi based)

My question is :how can I remove left-over program 'Mozilla Thunderbird (2.0.0.14)' from the client before I install the msi based Thunderbird.

[Cosmin]

Hi,

Please note that this feature works only for different versions of the same MSI product. I'm afraid that a repackaged MSI cannot upgrade the original package if its not MSI-based. Please note that the User Guide contains the Upgrade an older version of the package how-to which may help you.

Regards,
Cosmin

[davidsmith]

I am seeing the same problem with some of my computers when I do an uninstall from the command line. It is the same .msi file. If I do

msiexec /x "myfile.msi"

it works on my vms, but on my desktop computer I'm seeing

1) I first see a dialog box indicating that I want to do an uninstall. That is OK.

2) Next I see a dialog box that states "Another version of this product is already installed. Installation of this version cannot contiue. To configure..."

How can I fix (2)?

[Cosmin]

Hi,

This doesn't seem possible. This error message shouldn't be shown during an uninstall. Can you please test this on a clean machine? Also, what is the exact command line you are using?

Regards,
Cosmin