"Error Deployment failed! Failed to sign executable. Make sure your developer certificates have been installed in the System Keychain on the remote Mac."

Development Platform & Builds
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1

So basically the title is my problem.

My certificates + private key are in “system” instead of “login”, and checked a lot of other threads already but didn’t solve this as well.

Using:
UE 4.14
XCode 8.1

link text

2

Fixed it myself, it works if you use UE 4.13.2. So might be a bug in UE 4.14.