I installed it and nothing happens: the app will not open or launch

You installed Booked Solid, you opened it, and nothing happens. No window, or a window that never gets anywhere. This page is the short list of what actually causes that, in the order it usually turns out to be.

Work down it. Each one takes under a minute to rule out.

1. Windows: it never really installed

On Windows you see a blue "Windows protected your PC" screen. If you click Don't run, or close it, the installer stops and nothing is installed - but it can look like it worked, so the app you later try to open is not there.

Run the downloaded file again, click More info, then Run anyway. That screen appears because our Windows builds are not code-signed yet. It is not a virus warning.

2. Mac: you are opening it from the disk image

If you double-click the app while it is still inside the mounted .dmg window, it may open once and behave strangely, or not open at all. Drag it into your Applications folder first, then open it from there. Do not run it from Downloads either.

3. Mac: "Booked Solid is damaged and can't be opened"

This exact wording is not the usual unknown-developer warning, and the "Open anyway" trick does not fix it. It means macOS quarantined the download, which usually happens when the .zip was used instead of the .dmg.

Use the .dmg from the download page. If you already have the app in Applications, open Terminal and run:

xattr -cr "/Applications/Booked Solid.app"

Then open it normally. If it still refuses, open a ticket and tell us your macOS version.

4. The app opens, but Otto never answers

If the window is there and looks right but nothing comes back when you type, the app is fine and it is waiting on Claude. Booked Solid runs on your own Claude subscription, so it cannot think until you are signed in to Claude. The app shows a one-tap sign-in when that is what is missing.

5. The window is there but blank or frozen

That is a different problem with its own fix, including how to recover without losing work. See The app went blank or froze.

6. It is already running

Booked Solid only runs one copy at a time. If it is already open on another desktop or minimised, launching it again does nothing visible. Check your taskbar or Dock before reinstalling anything.

Still nothing?

Open a ticket at support.booked.kivimedia.co and tell us three things: your computer (Windows or Mac, and which version), which number above you got to, and what you saw on screen. That is usually enough to solve it on the first reply.

If you have not actually installed it yet

If you are not sure you ever got as far as installing, start from the beginning instead: Start here: from download to your first booking task, step by step. It walks the whole path in order.

Other ways people describe this

• Nothing happens when I open it.
• I installed it and nothing happens.
• The app will not open, will not start, will not launch.
• It won't open, it won't start, it won't launch. (Some people type it wont, without the apostrophe.)
• Nothing launches when I click the icon.
• I double-click it and nothing.
• It does not do anything when I click it.
• Booked Solid will not run on my computer.