Xcode 9 error: "iPhone has denied the launch request"

Using Xcode beta 9 (v4), I'm trying to launch the app by clicking on the "play" button. I get a "build succeeded" but right before launching, a popup message appears in Xcode:

"iPhone has denied the launch request."

It used to work yesterday. It does work on the simulator. I've rebooted my computer, the iPhone, uninstall the app, cleaned the build. Running out of ideas.

Solution 1:

It may be code sign issue. Make sure you're signing with developer, not distribution.

Solution 2:

It happens using Xcode 9.x or newer.

I tracked this problem down to the "debug executable" checkbox in the product scheme (product->scheme->edit scheme->info->debug executable checkbox). I unchecked that and this stopped happening (as well as a couple other weird issues - no output in console being one).

Solution 3:

I have a workaround:
If you change the scheme to 'Ask on Launch' it works.

In Xcode top bar

Product > Scheme > Edit Scheme > 'Info' tab > Executable:  "Ask on Launch"

http://upload-images.jianshu.io/upload_images/663014-d5d182e310052664.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240

It's slightly annoying but it works.

Solution 4:

This issue can be resolved by unchecking Debug Executable in Edit Scheme.

Solution 5:

After getting "denied launch request" error, do this:

Edit Scheme -> Info -> Executable -> Ask on Launch

This worked for me with adhoc profile.