Yesterday, March 9, Apple released its long-awaited Apple Watch, and Xcode,iphone also received an updated message push the first time. I turned on my computer to update the Xcode discovery can not update, and reported the above a reminder. Then I was depressed.
Halfway to kill a way to bite the gold, but do programming so long, also used to. I don't feel like doing anything for a day without fixing a few bugs. So I looked up the information and this was the reason, mainly because my xcode was a copy of the installation package from someone else.
If I want to update, I have to go to the Developer Center website to download the latest Xcode installation package, the link address is https://developer.apple.com/downloads/index.action#
Here is the solution one, and of course the second solution is to remove the current Xcode and then go back to the App store to download the latest one.
Well, when you see this, your problem should also be solved.
Workarounds for updates that cannot be made with this Apple ID