Is it possible to make an uninstall dependency?

[P3nnyw1se]

I'm facing an issue where I wanna install a piece of software on 150 computers.
a 30mb msi file.

the problem is an early version of this software is already installed.
I attempted to push it as an 'update' to see if it just installed on top of the old program, but it doesn't..

So at first I thought I would

1: Push an uninstall of the old version
2: Wait untill the old one was uninstalled
3: Then push an install of the new version

Here is the thing, the software is used everyday.. I can't just wait untill everybody has it uninstalled and then push the new version..
they need the new version right away once the old is gone.

So I was hoping that I could create a dependency, like
'before installing version 2... uninstall version 1'
that doesn't seem to be the case though.

how would you handle this? would you run a script?

[Peter33]

Just create a new application for the old Version, without sources and a dummy entry for the install command, fill the uninstall command with "msixec /x {productcode} /norestart /q", where the productcode belongs to the MSI of the old program. After that just create a supersedence in your new application.

[P3nnyw1se]

Got it all wrong, attempting now what you actually wrote