The operation couldn’t be completed. Unable to log in with account 'myappleid'. An unexpected failure occurred while logging in (Underlying error code 1100).

Encountering same issue here.

Encountering same issue here.

I Also Facing the same issue. Is there anyway to bypass this?

Same here

Hi,

go to Project properties->General and switch off Automatically manage signing.

Go to Apple Developer IOS Provisioning Profiles and add a new Profile for Development or Distribution or both

and import in Signing Area of General properties in Project.

Tip: you see SIgning Area after swith off Atomatically manage signing

Good Luck

Not sure it this will help anyone ... I had the same reported error message when attempting to transfer a project to my device via USB chord. My problem was that I launched XCode before my Mac was online and connected. After I did connect, I had this issue. I closed the application, and relaunched it, reloaded the project, and then the application transfered to my device without a problem.

Simply restarting Xcode didn't solve it for me. I had to go to "Preferences" -> "Accounts", where it turned out my Apple ID had timed-out. After logging-in there, and then restarting Xcode, my profile was automatically "repaired", and all is now well.

Restarting Xcode solved my issue as well. I believe it was because I had changed my Apple password, however, even though I updated it in my Xcode preferences, it didn't seem to recognize the change until I restarted Xcode.

I'd just logged in again in Xcode prefrerences before relaunch it. It worked

Hey I can't find Project properties->General is this in xcode? has this menu layout changed??

Did the trick for me

This one helped me. Thanks a lot.

I aslo went into Xcode -> Preferences ->Accounts

and re-signed in again, and then restarted Xcode

THanks guys !

All of the guys who said to re-sign in are absolutely right. I just want to give more explicit instructions in case there are any new developers reading this.

1. Close out of your Xcode Project

2. Open up the Xcode launch page

3. On the top bar, go to 'Xcode' -> 'Preferences'

4. Remove the Apple ID you currently have registered by selecting the ID on the left panel and hitting the '-' sign on the bottom

5. Click '+' -> 'Add Apple ID..' and re-sign in with your Apple ID

6. Open up your project and go to the .xcodeproj file (blue icon) -> 'General' Tab and select the Apple ID you just registered under Team

This fixed my issue. Hope this helps someone.

Tanq so much Brian.... 🙂

how to restart xcode. can you help me

FYI....this worked for me. However, after using @BrianBatchelder suggestion, I also had to close Xcode and restart it again.

At the top menu, go Xcode -> Quit Xcode

xcode > preferences > accounts tab > sign in again button then restart your app 🙂

Why would this matter?

In my case I'm trying to do a CI build, and as of xCode 9 you pretty much have to use automatic signing for automated build via Jenkins.

This was my case, signed out. That is partially the problem. Kept fiddling. Ended up also changing config.xml name and updating provisioning profile at apple dev site. Way complicated. Closed Xcode a few times and finally, for whatever, it all seems to be working ... for now. 😐

I used another suggestion, but if this happens again, I will try yours. It seems like what I had haphazardly done. Thanks.

Open Xcode

1. At the top of the screen, navigate to "Preferences" under "Xcode"

2. Then in the preferences window click "Accounts"

and finally, reenter all pertinent information (Apple ID & Password)

You may have to restart the application before the changes will take affect.

This could happen because you change your developer account password. You could try to change your password saved by Xcode from: Xcode -> Preference -> Accounts. Retype your password and click on Log in.

In my case I had a bit different issue

Unable to log in with account ‘account@gmail.com’. The login details for account ‘account@gmail.com’ were rejected

I had to logout and login again into xcode to fix the problem. Not sure, maybe xcode restart would help as well.

But what we are discussing is how to fix the problem. I would like to understand how to avoid this problem, what is causing it and what to do to don't have it anymore. I have this error already long time.

Thank you. This is true. What logged out? was it the iPhone or xcode? My xcode worksed fine on simulators!