Error installing Windows version.

[AppreciateIT]

Installing on Windows 10, get's about halfway through and seems to be having a problem. Then emits an error: "Onlook cannot be closed, please close it manually and click retry to continue..."
Tried at least 3 times.

[Smailya]

Hello there! I understand you're having trouble installing Onlook on your Windows 10 machine. It seems like the installer is getting stuck halfway through and asking you to manually close Onlook, even though you might not even have it open. This can definitely be frustrating, but let's break down why this might be happening and how we can try to fix it.

From what you've described, "Onlook cannot be closed, please close it manually and click retry to continue...", it strongly suggests that the installer believes an instance of Onlook (or a related process) is already running in the background, preventing it from completing the installation or updating necessary files. Even if you don't see it running on your taskbar, it could be a lingering background process from a previous, possibly failed, installation attempt or even a partial update.

Let me walk you through some steps to try and resolve this.

Here are the questions and keywords I'll use to search for a solution:
Why is this happening?

When an installer tries to put files onto your computer, it often needs to replace or modify existing ones. If a program, even a part of it, is currently running and using those files, the installer can't touch them. It then prompts you to close the offending application. In your case, since you're trying to install Onlook, and it's telling you to close Onlook, it's highly likely there's a background process, or a previously failed installation attempt, that left some Onlook components running.

[Smailya]

Try the following stepsto fix the problem: Make Sure Onlook Isn't Secretly Running
This is usually the main culprit. The installer thinks Onlook is already open, even if you can't see it. We need to tell any hidden Onlook bits to shut down completely.
Bring up Task Manager: Just press Ctrl + Shift + Esc on your keyboard. That's the quickest way to get it open.
Hunt for Onlook:
Once Task Manager is open, look at the "Processes" tab.
Check both "Apps" and "Background processes" for anything named "Onlook," "Onlook Installer," or anything that sounds like it belongs to Onlook.
If you spot anything, click on it and then hit "End task" down in the bottom right corner.
Dig a little deeper (if needed): Sometimes, processes have weird names. If you don't see anything obvious, click on the "Details" tab.
Click the "Name" column to put everything in alphabetical order.
Now, look for anything starting with "onlook" or something that seems connected to the installer (like onlook.exe, onlook_installer.exe, or even a setup.exe that might be linked to Onlook).
If you're really not sure what something is, you can right-click it and choose "Search online" to learn more. But if it clearly looks like Onlook, go ahead and "End task." Just be careful not to close anything important for Windows itself!
Try the installer again: After you've closed anything Onlook-related, go back to your Onlook installer and click that "Retry" button. if it does not work, let me know we we'll try something else