WIX removefiles and Windows delete registry entry - windows

I’m been wondering during uninstall, how to control the sequence of removefiles and Windows delete registry entry through WIX.
One of my program's registry
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\GUID\Transforms
is deleted before removefiles. If then removefiles failed, the uninstall process abort. But the registry is already deleted, that would be a disaster。

I would recommend adding a new custom action that will be scheduled to run after removefiles during uninstallation and that will clean up the registry as you need. At the same time you will need another custom action that will be scheduled to run during installation and that will create the registry entries. Therefore you would have to remove your registry definitions out of WiX XML.
The custom actions can be written even as shell commands I believe. Otherwise writing C# custom actions is also a good option.
Please don't forget when creating the conditions when to run the custom actions on cases as minor/major upgrades and repair. Fiddling the right conditions might be quite tedious. However all this really depends on your installation scenarios.

Related

After aborting the installer if i try to install again, installer is still pointing to old path

I am trying to install a installer developed using InstallShield 2008. While installing after selecting the destination path i am aborting the installation.
When i try to install again by default it is taking the destination path as previously given path which was provided before aborting the installation.
And also it is not allowing me to install in different path.
For Example:
*Step1 : Installation starts
Step2: Destination path as C:\Installer
Step3: Click next and abort installation
Step4: Start the installation again
Step5: Provide Different destination path as C:\Installer1*
Here installation is failed. Because destination is still pointing to Step2
My question is from where Installer is taking the old path.?
Persisted Path: The technicalities appear to be relatively straightforward: the old path is read back either from the registry or from disk each time the setup is launched, and a custom action in the setup's GUI sequence must have persisted the path "somewhere" during the first run (this is erroneous design, see technical comment below). Reading back the value can be done by using AppSearch (built-in MSI feature) or by means of a custom action.
Registry / Disk: As to finding where the value is read from. The easiest would be to just search the registry first for the literal path. Just open regedit.exe and search for the path there. You can also look for the custom action that does the persisting (or the AppSearch or custom action that does the retrieval) and see if it is a script with code you can see - then you should be able to see where it has persisted the path. Use Orca or a similar tool to view the Custom Action table. The custom action can also be compiled and undecipherable. Do you have the setup source? The path can also be persisted to disk, but the registry is most commonly used. Remember to search both HKCU and HKLM.
Involved Debugging: I can't see why you would, but it is also possible to use ProcMon.exe to monitor what registry locations your MSI reads and / or writes to. This is involved debugging and should never be needed for something this simple. Just mentioning it as a technical option. Generally the last resort we have to figure out the strangest problems.
Technical Comment: MSI setups are not supposed to write anything to the registry or disk from the setup's user interface sequence (setup dialogs). All changes should be made from the installation sequence (InstallExecuteSequence) which also generally runs with elevated rights - the user interface normally runs with user rights. This InstallExecuteSequence sequence is kicked off from the last dialog in the GUI sequence, and runs the file copy and system change operations. Control then returns to the GUI sequence to show the setup complete dialogs. It is also possible to run the setup silently, in which case the InstallUISequence never runs and all custom actions inserted there fail to run. Accordingly custom actions should be present in the InstallExecuteSequence as well as the InstallUISequence if they are to run in silent mode. This potential design flaw is a very common silent deployment error which occurs when setups are not designed properly for silent running. Remember that all corporate deployment runs silently. Setup GUI is highly overrated (in my opinion - a "fact" that could change in the future).
It is still possible for an MSI setup to write to the registry or disk from the InstallUISequence by using a custom action to do so. Such a custom action would normally not have access to write to HKLM or to protected parts of the disk - unless the whole setup runs elevated because it was launched from an elevated command prompt (for example), or launched by an admin who elevates it via the UAC prompt.
In other words: this setup is badly designed, but I guess that is clear already.

Windows installer is too clever, tries to repair when tester deletes config file

Our application is deployed to the target machine with an msi file. All works nicely. Our tester has gone through his plan, and one of the tests requires deleting the application's configuration file. The application is designed to alert the user with a dialog on startup saying "missing config". However, what happens is that - somehow! - the software starts the installer again and retrieves the missing file from the msi! Which is nice, but not what we want. How do we disable that behaviour?
without going into much depth of the windows installer mechanics (if you interested in that there a plenty of articles about this), the shortcut of the software is probably advertised, which means the windows installer checks if everything is in its place before the software is started.
if you can edit the msi, make the shortcut non advertised.
if you can't, install it with DISABLEADVTSHORTCUTS
e.g. msiexec /i myMsi.msi DISABLEADVTSHORTCUTS=1
please note that this is only a quick (and dirty) workaround,
to fix this proper you need to understand the whole windows installer advertising (also called repair or self resiliency) mechanism.
but explaining all the causes and the mechanism of the repair is far beyond this answer and there are quite some articles and posts about that on the internet (and especially on MSDN and stackoverflow)
There is a more correct answer to this, and it is NOT DISABLEADVTSHORTCUTS. You set the component id to null in the MSI file to prevent repair of that individual file. See ComponentId comments here:
http://msdn.microsoft.com/en-us/library/aa368007(v=vs.85).aspx
Edit the MSI file with Orca to delete the Componenty ID, and write an uninstall custom action to delete the file at uninstall if it's there.
In addition, that's a redundant test. Windows will restore that file for you if it's missing, so the idea that you need a test to notify that it's missing is pointless. The true test should be that Windows will restore the file if it's lost, and your app needs to do potentially nothing about the missing file.
You don't mention what tool you are using to make your MSI but I'm going to go out on a limb and guess Visual Studio Deployment Projects (.VDRPOJ).
One of the (many) horrible things about this tool was that it fails to expose the foundational concept of components. Instead it makes every file a key file of it's own component and hides the existence of the component from you. I say 'was' because Microsoft killed this project type in VS. There are around 50k people complaining on UserVoice to bring this tool back and I'm guessing that 49,990 of them don't know what a key path is.
Windows Installer has a concept called the component rules and each component has a keypath. The keypath teaches MSI how to handle repair scenarios. But your tool has to allow you to be able to control this to make it work.
Windows Installer is functioning exactly the way it's supposed to function. You just aren't up to speed on what that is.
However, if you want to ignore Windows Installer best practices and continue using the tool you use today, the trick is to install the app.config file as a different file. Then have the application copy the file to the real file name on run. Windows Installer won't service what it didn't install.
Several answers have been provided that can work:
You can install the file with a blank guid. Then you need to remove it on uninstall using the RemoveFile feature. You will also run into issues if you want to replace it during an upgrade. Could be tricky at times.
You can disable the advertised shortcut(s), but this affects too much in my opinion.
Finally you can use my suggestion to install a separate non-advertised shortcut to use to launch the application. Such a shortcut bypasses the self-repair check. It may still be invoked by other means such as missing file associations, COM registration or similar, but those are exception states.
However, my preference is that an application can start without a config file present, if at all possible. I always suggest a good startup routine with "internal defaults" available. The startup routine should also degrade gracefully if faced with any file system access denied conditions.
Most importantly you should place this config file in the userprofile so you can generate the file on first launch for the user in question. It can even be copied from a read-only copy in the main installation directory.
When you generate a file from internal defaults and put it in a userprofile location, the file will have no interference with Windows Installer at all. The issues that results is how to clean up user data on uninstall. I discussed this with Stefan Kruger (MSI MVP) at one point, and I agree with his notion that user data is indeed user data and should not be automatically dealt with by your installer at all. Leave it installed, and clean it up via system administrator tools if necessary - for example logon scripts.

Is it possible to run a custom action only in repair mode

I need to run a custom action only during Repair. But I didn't find a valid condition to do so.
If I specify a custom action with below condition, it runs in Modify mode as well as in Repair mode.
Installed AND Not REMOVE
I am using InstallShield 2012 spring.
Check the REINSTALL property. Conditional statement on your custom action should look like REINSTALL<>""
REINSTALL="" will be evaluated to True during the install and uninstall phases so the exact condition is (Installed and NOT REMOVE) AND (REINSTALL="")
because (Installed and NOT REMOVE) is True during Modify and repair operations but during repair REINSTALL property will be set to blank
For future reference check these cheat sheets:
Installshield condition cheat sheet.
How to add a WiX custom action that happens only on uninstall (via MSI)?
I have not had the time to go through all these conditions and test them, but the latter table looks reasonable at face value. However:
I believe REMOVE can sometimes be set during installation for example (and change) - it is very complicated to deal with all permutations of possibilities since MSI's command line interface and property configuration is so flexible.
The Installshield cheat sheet I have never actively used or checked. Please check their suggestions for repair - there are different ones depending on how the repair is invoked.
Please remember to also check self-repair - just delete the main application EXE and trigger self-repair by then invoking the application's advertised shortcut (if any). It has been years since I checked, but self-repair may only run actions between InstallInitialize and InstallFinalize.

How to prevent running multiple instances of setup.exe created in installshield basic msi project?

I have created my application's setup in installshield - basic MSI project...
Now when i am installing it, it allows me to run .exe multiple times simultanious...
Please let me know, how can i stop it.....
There is already a safe guard automatically built-into Windows Installer. If two or more of your installs actually try to install only the first one will install. The others will throw a message saying another install is already in progress. This is enforced by the _msiexecute mutex.
If you want to gate the situation earlier, you'll have to write your own custom actions to create your own custom mutex, tear it down when the install is complete and check for it when starting the install. However, I'd mark this problem as Functions as Designed and move on.

Creating Basic MSI that invokes another msi installation

I have asked this exact question on the Flexara forum, but got no response up to today, so I want to ask it here.
We currently have a InstallScript project which runs fine. The resulting setup can be made unattended/silent fine.
In this setup we have some features and invoke a number of third-party installations (that are a prerequisite for running our software).
However, we have customers that want an MSI file and therefore we resorted to the Basic MSI project type.
The setup is made without too much hassle (I'm fairly new to InstallShield) and I can generate a .exe and .msi from this project.
However the only issue I have left is invoking one of the third-party installers.
That third-party installer (made with NSIS) on its turn invokes another installer which is MSI based.
This results in having error 1500 - the fact that you cannot run a msi type installation while another is running.
I've tried scheduling the CA (that are used to invoke the third-party installers) as the first action and as last, but no success.
Before resorting on the more unorthodox scenarios (like creating a task on Windows Task manager that runs after our installer finishes, or at the next reboot and forcing a reboot - which our customers don't like) or a scenario that we don't bundle the 'faulting' installer (we really like to be able to hand over a single intaller and not multiple), I'd thought I ask your input.
I've tried searching for solutions everywhere on the internet, but either I'm failing due to wrong keywords or I just didn't stumble on the right post yet.
Are there any options left for us to create a single MSI installer that is able to invoke this third-party installer (which invokes a msi installer on its turn)?
Since an EXE bootstrapper is not acceptable, there is only one solution:
store the prerequisite installers in Binary table of your MSI
create some custom actions which extract them from this table and launch them
schedule them in InstallUISequence, for example right before Progress dialog
use searches to detect if the prerequisites are installed or not
condition your custom actions with the search results
Basically, you need to launch them during the installation UI. It won't work if you launch them during InstallExecuteSequence.
I don't think the basic MSI project supports this, but it may be supported by more advanced project types. Other setup authoring tools offer direct support for this.
You can try InstallShield's "Chained .msi Package" feature.

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