5 replies to this topic

[Ajawl]

Hi,
I am trying to search installed applications using the update table. The problem is that some times a application is found and some times not.

For example, two application (two different upgrade codes) will be searched. If the first application is installed as per-machine and the second application is installed as per-user, then just the first application will be found and the second will be ignored, as described in the log file:

Aktion 11:35:46: FindRelatedProducts. Verwandte Anwendungen werden gesucht
FindRelatedProducts: Anwendung gefunden: {D28106AA-E266-4506-B270-C88678E60344}
MSI © (94:60): FindRelatedProducts: current install is per-machine. Related install for product '{150A07BA-346E-47D2-8C1E-55E635C7AF2C}' is per-user. Skipping.
Aktion beendet um 11:35:46: FindRelatedProducts. Rückgabewert 1.

Just if the first application is not installed, then the second application (per-user!!), the same which was installed in the first case, will be identified, as described in the log file:

Aktion 11:38:38: FindRelatedProducts. Verwandte Anwendungen werden gesucht
FindRelatedProducts: Anwendung gefunden: {150A07BA-346E-47D2-8C1E-55E635C7AF2C}
Aktion beendet um 11:38:38: FindRelatedProducts. Rückgabewert 1.

Why does the per-user application was not found in the first case? Please, does anybody can help me?

Thank you,
Ajawl

[dbareis]

Only products installing in the same manner will be processed so if your current install is per-machine then it will find per-machine products, if you are installing per-user it will find per-user. It sounds like either you have missed telling us something (or I misread something...) or your install is deciding on its own whether to install per-user or per-machine?

Bye,
Dennis

[Ajawl]

It could be a good tip, but the application, which is searching the other two applications, is installed always as per-machine.
This per-machine application can find also the per-user application (only if the other per-machine application is not installed).

I still cannot understand why the per-user application is not found only when the per-machine application is installed.

Thanks,
Ajawl

[Stefan Krueger]

If you created your setup with InstallShield, you'll probably see a custom action ISSetAllUsers. This will get the ALLUSERS setting from the existing installation (that is being upgraded) and uses this for the current installation. This is to workaround the FindRelatedProducts limitation you encountered. In your case it's causing the seeminly random behaviour. Please read the help file about ISSetAllUsers which should help you understand what's going on.
If your new version will always be installed per-machine, and you never want to upgrade the per-user installed product, then you could remove the ISSetAllUsers action from your sequences.

[dbareis]

Hi,

Is there a way of telling if any installed product is per-user or per-machine, I know you can tell it is per-user if its status says it was installed by another user but if it was installed per-user by me and I run a query as far as I know I can't tell the difference between per-user and per-machine (ie missing Windows Installer functionaility)...

Thanks,
Dennis

[Zweitze]

Look at MsiQueryProductState()