SwiftUI Preview Don't work iOS 15 Xcode 13.0

Same here, I am facing the same problem too!!

Sorry to hear you are having problems getting previews working. Best next step will be to file a feedback with diagnostics. We will need the diagnostics Xcode Previews generates in order to make sure we understand the error the previews system is encountering.

1. When you get an error in Xcode Previews, an error banner appears in the canvas
2. Click the "Diagnostics" button in that banner
3. In the sheet that appears, click "Generate Report" in the bottom left of the sheet
4. Attach (or make from the folder) the resulting zip file to the bug (will be named something like previews-diagnostics-0123456789.zip)

Report back here with the feedback ID and I'll make sure it gets to the right folks as soon as possible.

I have the same Problem, unfortunately it is "Preparing iPhone Simulator for Previews" like forever. There is no error and therefore there is no way to clik a "Diagnostics" button... Is there an alternative way?

yes, I have an error with Xcode version 13.0 macOS Big Sur version 11.6 . it auto quit when I code wrong one line. I can't work. I already remove it and install 5 time again but it still. who can help me. please.

I have the same issue. After cleanup of Derived data and restart of all simulator, I now receive "Message send failure" see: FB9834982

I have the same issue. Tried to clean Derived data folder, SwiftUI preview folder, removed and restored all simulators, but with no luck. Left it be for some while but the "Preparing iPhone Simulator for Previews" loader was spinning even after 30 minutes

The only solution is to pick another simulator

Was struggling with this issue for the past few hours and just resolved it.

The issue was that the device chosen from the list of simulators runs on iOS 15.2, and when I go to Preferences > Components I wasn't seeing 15.2 listed, only 15.0. So to resolve this:

1. I went to Window > Devices and Simulators
2. Chose Simulators
3. Clicked on the + at the bottom left corner
4. Added a name and choose iOS 15.0 (since it was the only one I had in the components)
5. Selected this new device in the list then tried to re-un the preview and it worked fine

Hope this helps someone.

well i had the same issue,what i did and i believe solved this for me was:

2)when a system msg popped up for i clicked on "accept always" and ta daaa

Try changing the simulator version (ex iPhone 13 mini > iPhone 13 Pro Max)

I have the same error. After I re-install the Xcode, it finally prepare successfully.

In my case I messed up my previews by deleting simulator folders from the filesystem without going through xcode. I fixed this by running:

xcrun simctl --set previews delete all

Bonjour, Je me trouve exactement dans la même situation. Comment faire ?

Same. iOS 17.2 I will reinstall Xcode the other solutions didn't make the trick.