Unable to install app in simulator Xcode 9 beta

Question

I downloaded Xcode 9 beta recently, and when I tried to run my app in the simulator it is not getting installed. I am getting this error in my Xcode every time I try to run the app.

This app was unable to be installed.

The application used to work in Xcode 8.3.3

Answer 1

Unfortunately, the error message doesn’t explain why the install failed. You can take a look at ~/Library/Logs/CoreSimulator/CoreSimulator.log to see if the rest of the error message is there with more info. If not, you should check out the sim device’s system log:

sudo xcode-select -s /Applications/Xcode-beta.app # if you haven’t already
xcrun simctl spawn booted log show

You can use --predicate to filter that down a bit.

Answer 2

Late answer but might be that can be useful for others. I just get a project with existing watch-kit and custom keyboard code. After change the identifier i got the same error and i spend 1 day to find out why that happens.

I checked everything of bundle id and all version. then i do global search in xcode with old identifier and i found that following.

Here in both .plist file have old WKCompanionAppBundleIdentifier so after i update it with new manually application run again.

IMPORTANT NOTE:

IF YOU ARE JUST CHANGE IDENTIFIER FROM GENERAL TAB THAT DOES NOT MEAN IT UPDATE AT ALL. KINDLY CHECK WITH ALL POSSIBLE PLACES BY SEARCH AND REPLACE IT WITH NEW IDENTIFIER.

XCODE VERSIO: Version 9.0 (9A235)