I am attempting to launch the iPhone simulator from Xcode, but I keep getting the following error:
Error from Debugger: Failed to launch simulator: Operation failed with underlying error: 4294967253.
I've found a number of posts where Xcode failed to launch the simulator, but none of them match the specific error code I'm receiving.
Glad you got things solved senfo. I've found that doing a full rebuild can work as well as checking your system console log for erroneous error message/warnings. Xcode unfortunately seems to be rather poor at conveying errors when deployments fail to the simulator.
Whenever I've had issues like this, Force Quitting the simulator from the dock (Alt-Right click), followed by Xcode seemed to do the trick. After doing that I could reload my project and it would run fine.
Failing that, I hear it might help to reboot your mac (though I've never needed to go that far).
I'm not sure why I didn't try this earlier, but installing the latest version of Xcode fixed the problem.
Related
I create a flutter app and now I'm trying to run it through XCode on my real iPhone, but after the installation finishes, I face the following problem:
Also with I trying to run the application on my real phone, after clicking on the application icon, I face a white screen appears, and then the application closes directly.
Catalina 10.15.3
IOS 14.2
XCODE 11.7
Also I was make a trust to app in phone
Does anyone know the reason for this problem?
This problem maybe because of two reasons:
First: Xcode 11.7 doesn't have support files for iOS 14 you can download it from here https://github.com/filsv/iPhoneOSDeviceSupport
Second: I have this problem now and I couldn't fix it.. but I have iPhone with iOS 14.2 and iPad with iOS 14 so the problem was just on the iPhone but after I updated the iPad with iOS 14.2 it happened with it.. so the problem maybe because of the iOS 14.2 so we have to wait for the update or because of the Xcode 11 version and we have to download the Xcode 12 version..
I hope we can find a solution quickly...
make sure to have the latest system update on your target device and the latest Xcode version as well. The error should disappear.
Best,
Ralf
I have fixed the problem by using the above solution but it has happened again. So, I have followed these instructions and fixed again:
https://stackoverflow.com/a/61665031/6586109
A good first place to look is Window > Devices & Simulators in xCode, then find the details for your device. There may be error information here that helps you find the fault.
Restarting devices and installing updates seem to fix this problem for a lot of people.
For me, there was a red notice in the device window about connection to the device and it turned out to be the cable that was at fault.
This was an official Apple cable, just a few months old, and still works fine for charging and data transfer; and I've been using it with xCode without problems for a couple of months. It seems to be possible for Apple cables to develop some tiny physical fault that seemingly only xCode is sensitive to.
Using a different cable worked first time for me.
There seem to be a few variations on the exact error message with the same root causes varying depending on exactly what xCode was trying to do at the exact moment it failed: I'm on xCode 12 and for me it was:
Failed to start remote service on device
Failed to start remote service com.apple.installation_proxy on device
In one of my app I am facing this issue in Xcode 9.2. I have created my project in Xcode 8.3 and when I am running in Xcode 9.2 it shows me error like
Failed to find device type for System content for
IBCocoaTouchFramework-ElevenAndLater
scaleFactor=2x
Failure Reason: Could not find a suitable device type for the idiom
I am using Xcode 9.2 (Version 9.2 (9C40b)).I am not able to identify
problem.
It gives me error in assist catalog Any one have any idea ??
Hope this gets you well
Try to clear your derived data.
Try to completely restart your computer after downloading the new Simulator runtimes within Xcode for things to start working correctly again.
cheers :)
When I run tests on my project in XCode, it builds, and then says Testing... which never ends.
When I use the stop button, the process stops with this text in the console:
*** If you believe this error represents a bug, please attach the log file at /Users/MY.NAME/Library/Developer/Xcode/DerivedData/APPNAME-gcsubmsjksdbljcswbefkgugjray/Logs/Test/C53D8988-3564-4C2B-A535-075D26D1E4A7/Session-APPNAMETests-2016-07-13_140704-t3DFd5.log
However, I am unable to run the tests again, and have to relaunch xcode to run them.
Is this an issue on XCode that may be known to the Apple developers?
EDIT
So, I figured, the simulator is not launching in time, and that fails the xcode to run the tests. It might be an installation bug with the simulator.
As I anticipated in my edit to the question the first time, XCode installation did not install the simulator correctly.
I trashed the old installed version and reinstalled XCode. And now everything works fine.
Thanks for all the help.
I found that the tests never ran if I was running anything other than iOS10 on the simulator, so use iOS 10. I guess backwards compatibility doesn't really matter.
Sometimes when I try and build a project in Xcode, roughly 1 in 10 times, it crashes and quits. I then get an error box which says: "Xcode quit unexpectedly while using the libclang.dylib plug-in". Xcode will also sometimes crash randomly with no error report. I have never heard of libclang before, what should I do?
try installing latest Xcode 4.0.2 version
Have forgot when it started from,when I debug My on Iphone Simulator,Xcode4 will crash.
just when the Simulator is opening.I have uninstall it for many times, but the same result.why? I have been crasy with all the crashs,more intolerable, my debug error is disappeared.what cause that?anyone has the same problem?
Does it happen only with one specific project or all your projects. If it is one project then that project has an error causing the crash. If it is all projects then it is a xcode problem. Where are you trying to install it from? Try doing this, open up terminal and enter in
sudo <Xcode>/Library/uninstall-devtools --mode=all
This will uninstall xcode all the way. Then try installing the xcode again after downlading it from developer.apple.com if you have a developer account or buying it from the Mac App Store. Hope this helps.
Xcode->preference->general->Reset "Don't Ask Me" Warnings