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Oct 18th, 2009
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C#, updating installed app with the Windows Installer

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Hello, dear All

I have the following problem: i have a .net (C#) app and a Windows Installer project to deploy it. Now i want this Installer project be able not just to install the app onto a 'bare' client machine, but also to check if some previous version of the app has been already installed and update it if necessary.
At first glance, this problem seems as very common and easy to find solution for, but, surprisingly, Google says nothing about it. If somebody knows at least where to look for a solution - i'ld be very grateful for a help.
Last edited by educated_fool; Oct 18th, 2009 at 9:39 am.
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educated_fool is offline Offline
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Oct 18th, 2009
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Re: C#, updating installed app with the Windows Installer
Click on the installer in your solution explorer and look in the properties window. Set these properties:
DetectNewerInstalledVersion = True
RemovePreviousVersions = True

That will allow you to upgrade machines and stop accidental downgrades.
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sknake is offline Offline
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Re: C#, updating installed app with the Windows Installer
Sknake, thanks a lot! You really helped me to cope with the problem.
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Re: C#, updating installed app with the Windows Installer
You're welcome

Please mark this thread as solved if you have found a solution to your question and good luck!
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Oct 13th, 2011
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problem persist

by setting the following properties

DetectNewerInstalledVersion = True
RemovePreviousVersions = True

Setup didn't prompt that another version is already installed, Its updates automatically the previous version installed.

But the problem is it is not updating the exe file; it updates the icon file only.
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narin143 is offline Offline
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This thread is solved

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