pkimike
Posts: 8
Joined: Mon Feb 21, 2022 9:33 pm

"Are you sure you want to cancel" pop-up when installer tries to start modifying system

Hello,

We were working with a customer today who was unable to get our package to run (it would have been an upgrade). They were able to get through the initial installer dialogs, but basically right after they clicked the "Install" button, they got a pop-up saying "Are you sure you want to cancel". Clicking "No" starts the installer over. Clicking "Yes" exits the installer without modifying the system.

We were able to generate a verbose MSI log (which you can find here: http://x509crypto.org/downloads/install3.log). We made sure that Windows Installer is allowed to run on the system and that there were no pending reboots. Nothing helpful appeared in the Windows event viewer, unfortunately.

Any guidance would be greatly appreciated.
Catalin
Posts: 7504
Joined: Wed Jun 13, 2018 7:49 am

Re: "Are you sure you want to cancel" pop-up when installer tries to start modifying system

Hello Mike,

Usually, this happens for the reason showcased in the following FAQ:

Why the "Are you sure you want to cancel installation" message is thrown after clicking the [ Install ] button?

In your case, I'm assuming that this only happens on one machine, correct? I'm asking because this would automatically disqualify the above, as it should happen on all machines.

I happened to stumble across this issue in the past with some other users, but I'm afraid I never found a possible culprit for it - it definitely is some configuration on the user's computer, but I did not manage to find what caused this.

Also, what if you try to silently install the EXE (from a command prompt, call the EXE with the /exenoui and /qn parameters), does that work?

A possible fix would be to try and build an MSI for this specific customer so that the installation can succeed (I'm assuming the uninstall of the older version works just fine, correct?).

Some of the main features that are requiring an EXE are: pre-install prerequisites, the usage of newer themes. So, if you are not using these, you can try and build just for this customer an MSI package (from the "Builds" page you can select the output).

Hope this helps somehow!

Best regards,
Catalin
Catalin Gheorghe - Advanced Installer Team
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