[wix-users] SuppressDowngrade still installs a bundle

[Jacques Eloff]

Hi Sean

This is a bundle that ships through WSUS. WSUS differentiates between
security and non-security updates, which can sometimes result in offering
older releases depending on how customers configure their update policies.
In those cases we want to avoid seeing downgrade failures when a deployment
runs over thousands of machines in an enterprise environment.

I read the documentation and it sounded like it was exactly what we wanted.
This was the cheaper option to implement and something we've used in custom
chainers previously.

I understand that it's by design and just wanted to confirm.

Thanks,
Jacques

On Wed, Jul 7, 2021 at 1:34 PM Sean Hall via wix-users <
wix-users at lists.wixtoolset.org> wrote:

> That documentation doesn't match the commit message (
>
> https://github.com/wixtoolset/codeplex/commit/2222d3e0e988763b3a46d07583acfd5046949e36
> ):
>
> Add bal:WixStandardBootstrapperApplication/@SuppressDowngradeFailure to let
> attempted downgrades happen. This is useful for redistributable bundles
> where a later version major-upgrades prior versions and where a product
> that ships with a prior version shouldn't cause an error when a later
> version of the redistributable is already present.
>
> Why do you want your bundle to return success if someone tries to install
> an older version than the one that is already installed? Don't you want the
> user to know that it failed to install in that case?
>
> On Wed, Jul 7, 2021 at 12:35 PM Jacques Eloff via wix-users <
> wix-users at lists.wixtoolset.org> wrote:
>
> > Hi
> >
> > Reading through the documentation, the BAL extension to suppress
> downgrades
> > in the bootstrapper states that when set to "yes", it should result in a
> > "successful, do-nothing" operation.
> >
> > However, when I create two upgrade related bundles with the success
> > blocker, it actually continues to execute the downgrade and I end up
> with a
> > SxS install of the two bundles.
> >
> > [01BC:1E74][2021-07-07T09:03:43]i000: A newer version of this product is
> > installed but downgrade failure has been suppressed; continuing...
> > [01BC:2F48][2021-07-07T09:03:43]i200: Plan begin, 3 packages, action:
> > Install
> >
> > I was expecting that the plan/execute phases would be skipped, but that
> > does not appear to be the case?
> >
> > Do I need to add conditions on the packages to check if a downgrade is in
> > progress? Does WiXBundleAction support detecting downgrades?
> >
> > Thanks,
> > Jacques
> >
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