[wix-users] Persisted variable getting reinitialized

[Sean Hall]

You'll always see that initialization message. The value should have been
persisted if the bundle was automatically started on reboot. When loading
the persisted variable values, those updates are not currently logged (
https://github.com/wixtoolset/wix3/blob/376423b8101f4b59ee865e8a255cfe190fa5a7f1/src/burn/engine/variable.cpp#L995
).

On Wed, Mar 31, 2021 at 4:08 PM Dima Vasilkov via wix-users <
wix-users at lists.wixtoolset.org> wrote:

> Hello,
>
> I have a variable, InstallFolder, that I would like to persist with a
> restart partway through the installation. I have a default value set for
> the variable and it is only changed if the registry key is present.
>
> <util:RegistrySearch
>       Id='IsElectronInstalled'
>       Variable="elInstalled"
>       Result="exists"
>       Root="HKCU"
>       Key="Software\$(var.Branding)" />
> <util:RegistrySearch Id="installedLocSearch" Root="HKCU"
>       Key="SOFTWARE\$(var.Branding)" Result="value"
>       Win64="yes" Variable="InstallFolder" Value="install_location"
>       Condition="elInstalled" After="installedVerSearch"/>
> <Variable Name="InstallFolder" bal:Overridable="yes" Type="string"
> Value="[LocalAppDataFolder]" Persisted="yes"/>
>
> The bootstrapper successfully initializes the variable
> [0798:078C][2021-03-31T16:44:32]i000: Initializing string variable
> 'InstallFolder' to value '[LocalAppDataFolder]'
>
> and the variable that determines whether to run the registry search
> evaluates to false
> [0798:078C][2021-03-31T16:44:33]i000: Setting numeric variable
> 'elInstalled' to value 0
>
> Then the user changes the value of the variable from the bootstrapper
> [0798:0DF0][2021-03-31T16:45:29]i000: Setting string variable
> 'InstallFolder' to value 'D:\'
>
> After the restart completes the bootstrapper resumes installation but says
> [237C:2380][2021-03-31T16:48:37]i000: Initializing string variable
> 'InstallFolder' to value '[LocalAppDataFolder]'\
> which overwrites the value that was set before the restart :(
>
> Not sure if this is related but there are a bunch of messages before the
> restart like this
>
> [0798:078C][2021-03-31T16:47:10]e000: Error 0x800700e8: Failed to send
> BURN_ELEVATION_MESSAGE_TYPE_CLEAN_PACKAGE message to per-machine process.
> [0798:092C][2021-03-31T16:47:10]i400: Received system request to shut down
> the process: critical: Yes, elevated: No, allowed: Yes
> [0798:078C][2021-03-31T16:47:10]e000: Error 0x800700e8: Failed to write
> message type to pipe.
> [0798:078C][2021-03-31T16:47:10]e000: Error 0x800700e8: Failed to write
> send message to pipe.
> [0798:078C][2021-03-31T16:47:10]e000: Error 0x800700e8: Failed to send
> message to per-machine process.
> [0798:078C][2021-03-31T16:47:10]e000: Error 0x800700e8: Failed to end
> session in per-machine process.
> [0798:078C][2021-03-31T16:47:10]e000: Error 0x800700e8: Failed to write
> message type to pipe.
> [0798:078C][2021-03-31T16:47:10]e000: Error 0x800700e8: Failed to write
> send message to pipe.
> [0798:078C][2021-03-31T16:47:10]e000: Error 0x800700e8: Failed to send
> message to per-machine process.
>
>
> How can I get the burn variable to keep the same value despite the restart?
>
> Best,
> Dima
>
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