Xcode 10: A valid provisioning profile for this executable was not found

I was struggling with this today, it was super frustrating. For now, just go into "File" > "Project Settings..." (or in some cases "Workspace Settings...") and then select "Legacy Build System" from the "Build System" dropdown.

@Stephen tks this resolved for me. I just need to go --> File --> WorspaceSettings --> Build Settings(change here to "Legacy Build System")

I have tried all the above solutions.

However, in my case, after hours of headache it was because of the Test Project does not have a valid account for provisioning the signing. After I selected a team to provision in the Test Project with automatic managed signing. This problem went away.

[edit] Note 2020: I used to manual sign this project. In projects where I automatically signed, I never had this issue. [/edit]

I had the same problem, and spent hours searching for an answer, removing profiles, cleaning project, and so on.

Have you distributed your app? You need to switch back to your developer profile, but not in General under the project settings, but in Build settings.

Under Signing, look at your Code Signing Identity.

Make sure that both your Debug and Release are set your iOS Developer, and not iOS Distribution; or your iOS Developer Provisioning profile, if not set to the automatic values.

The same goes with Provisioning Profile. It should be your developing profile, and not your distribution profile.