Device build fails after upgrading to Xcode 8

Question

Since upgrading to Xcode 8 I cannot run any app on my iPhone. The build fails with error:

error: Task failed with exit 0 signal 11

Answer 1

For me this issue was due to expired certificate. I updated my certificate and provisioning profile and issue got solved.

Answer 2

I found that by deleting my account under preferences and re-adding it, I can usually solve this problem.

1. Click the Xcode menu and select Preferences...
2. Select the Accounts tab.
3. Select your developer account under "Apple IDs"
4. Click the "-" button at the bottom to remove it.
5. Add your developer account back with the "+" button.

Answer 3

If you still face this issue and you have upgraded to MacOS Sierra. You can look in the keychain and delete a system key named "1". This solved my problem "Task failed with exit 0 signal 5"

Answer 4

In my case,

1. Close Xcode.
2. Clean Derived data.
3. Open Xcode.
4. Clean Product.
5. Run your app.

Answer 5

Had the exact same issue. First cleaned the Product then restarted the computer. Worked for me!