Home/ Questions/Q 582531
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-13T14:41:48+00:00

I’m working on a MSI file which is able to install 2 tools. Both

  • 0

I’m working on a MSI file which is able to install 2 tools. Both tools are installed from an exe file but which are able to be launched silently with
arguments like /SI
I can built the project without problem, without warning… Un-install works fine too.
If I double click on my MSI file, both software are installed without problem….
then I can uninstall without problem …

But If I launch my msi file using msiexec /i mymsi.msi /qn this time just the first software TOOL-A is installed… then nothing else.
You can see below my configuration:
Tool-A custom action

Tool-A Custom Actions:
Executable Filekey: setup.exe
Command Line: /SI
Return Processiong: Synchronous (check exit code)
In-Script Execution: Immediate Execution

Execution Scheduling: Execute only once
Install UI Sequence: After ExecuteAction
Install UI Condition: Not Installed
Install Exec Sequence: After InstallFinalize
Install Exec Condition: Not Installed
Advertise Exec Sequence: Absent from sequence
Admin UI Sequence: <Absent from sequence>
Admin Exec Sequence: <Absent from sequence>
MSI Type Number 274

And for the second tool (never installed using MSIEXEC )

Tool-B custom action
Executable Filekey: setup.exe1
Command Line: /q
Return Processiong: Synchronous (check exit code)
In-Script Execution: Immediate Execution
Execution Scheduling: Execute only once
Install UI Sequence: After tool-A
Install UI Condition: Not Installed
Install Exec Sequence: After tool-A
Install Exec Condition: Not Installed
Advertise Exec Sequence: <Absent from sequence>
Admin UI Sequence: <Absent from sequence>
Admin Exec Sequence: <Absent from sequence>
MSI Type Number 274

So if someone can help me ? To summurize: If the MSI is launched via double-click no problemo: tool-A and tool-B are installed !
If I use Msiexec /i mymsi.msi /qn just tool-A is installed !!!

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    I agree with Michael, you’ll find that Tool-B ‘s install uses the Windows Installer service. When your install’s execute sequence is running, a transaction is taking place. Prior to Installer version 4.5, the Installer wouldn’t allow two transactions to take place simultaneously, which prevents Tool-B’s install from running.

    Starting with version 4.5, there is some magic that makes this possible. Effectively it lets you tell the Installer “Hey, this other install transaction I want you to perform is really part of my transaction. So, merge the two and treat them as a single transaction. Thanks.”

    This is the doc you want to refer to:

    http://msdn.microsoft.com/en-us/library/bb736322%28VS.85%29.aspx

    • 0