ERROR_PRODUCT_VERSION 1638 Another version of this product is already installed

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ERROR_PRODUCT_VERSION 1638 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 Programs in Control Panel.

Hello. I have an MSI installer that just contains a MSN module. My Basic MSI installer is the typical installer: it has feature, product version & name, and no components. It works very well. I changed the Product Version but not the Product Code and Upgrade Code.

The package code is changed each time I build a new installer because I left the default stuff in Install Shield. The problem is that I get ERROR_PRODUCT_VERSION (1638) when I want to do a minor upgrade. It seems that my new MSI installer is somehow same as the old one. What do I need to change in the new MSI installer in order to get a new one?

The MSN module I have installs some DLL which of course in the new version have different versions. Thanks for your support.

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Best Answer by Sierra Adams
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Answered By 0 points N/A #192387

ERROR_PRODUCT_VERSION 1638 Another version of this product is already installed

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Hi King,

According to my understanding you should allow the update installer to update version as well as product code. This is the requirement for a complete new update and installers are designed on these basis. Please set these parameters on the install product advance settings and then try to use the installer.

I hope this will helps you.

Thank you.

Answered By 0 points N/A #192388

ERROR_PRODUCT_VERSION 1638 Another version of this product is already installed

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hi

ERROR_PRODUCT_VERSION 1638 Another version of this product is already installed is an error occurs when you try a software over an existing installed software. First uninstalled the installed old app and restart your pc. Then try to install the app once again. It should install normally. Don’t install unless you have uninstalled. Hope this helps.

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