iOS Simulator not working after codesign for Xcode 8.3.2

[MichaelDanielTom]

Hey guys,
After a fresh download of Xcode 8.3.2, follow the codesigning steps outlined in the Xcode 8 installation instructions, and XVim works, however when I try to run my app on the simulator, I get the following error:

Error returned in reply: Connection interrupted
Software caused connection abort

The simulator works fine before the codesigning step. Any idea what's going on?

[MichaelDanielTom]

Think I solved it (got XVim AND the simulator to work).

I think the problem was using the self-signed certificate that was suggested as "XcodeSigner" in the Xcode 8 installation instructions. After using the apple provided cert to resign, everything worked:
sudo codesign -f -s "iPhone Developer: Michael Tom (BWOFUJVT8M)" /Applications/Xcode.app/

[hanl001]

you should create an other sign and Re-signing Xcode again

[skymoment]

how to create a sign