When I run the project and add the app in simulator for the first time, everything is okay. But when I run it again, Xcode prompts this message as a pop-up window at the end of compilation:
This app could not be installed at this time.
I already checked the relevant question, and tried all the advised ways to solve this issue; checking mentioned logs, cleaning project, restarting simulator, changing it, erasing all content and settings in it. Nothing works. I must erase the app and recompile it every time to open the app. Did you get the same message before? Is there any way to detect problem and resolve it? Btw, I use Xcode 9.2 at High Sierra.
This error pop-up may come up for different reasons. There is no specific reason to see it for now. In my case, a JSON file that I added to Bundle in order to provide mock data triggered this issue. This file was containing a Turkish letter in one of the keys. After I fix it, the pop-up is gone. Interestingly, earlier simulators (<=9.1) work properly if JSON file contains Turkish letter but 9.2 simulators cannot tolerate it.
Worked for me when I rebuild the project after deleting the derived data folder.
I think I may have found a solution. This all started a short time after I let Xcode update my project settings. Specifically on my CocoaPod-Subproject. I removed the pods and reinstalled them and now I am no longer getting the pop-up.
In Xcode 6.3, I got this error when trying to run an iOS project written in Swift on a real device.
App installation failed
could not write to the device.
I tried to clean the project and run again, but the same error occurs.
How can I fix this error?
Deleting the app on the device and running the project again works for me.
I did a Clean and installed my app successfully.
Product->Clean(Shift-Cmd-K)
I turned off the device and turned it on again after which I did not get such error.
OK, few things you should consider that could guide us to the problem, please check and post the answers:
is your project using capabilities? are they set correctly (should be all green)
did you try with a different project (something really simple)?
are you able to install apps from the App Store?
did you check the amount of free space left in the device?
if not, another suggestion will be using exception breakpoint, there is someone that posted an explanation how to setup it, do it and post the logs
App installation failed
I hope it helps you
Got this problem twice in one week on complete different devices.
One device had no more storage left, after deleting some apps the project installed perfectly.
The other device was fixed after rebooting the device
If you are using a free developer account you may need to uninstall some other apps you have signed.
For me it was the provisioning profile - I used distribution instead of development
My issue was an embedded framework.
Go to "Build Phases" -> "Embed Frameworks" -> Check "Copy only when installing", and it got rid of the issue for me.
For me the following did not work on iOS 11 beta 10, XCode 9 beta 6:
Restart the device
Deleting the app from the device
No symlinks were in the project
There was plenty of storage available
Deleted Derived Data and voilá, it worked again
in my project this problem happened because there was a folder with symbolic link. I removed that folder and it worked properly.
This error has many potential root causes, as can be seen by the large variety of suggested answers. The best approach to troubleshooting app installation issues like this one is usually to inspect the console of the iOS device itself, as that'll often provide much more specific error messages. In Xcode open the 'Devices and Simulators' window and take a peek at the logs of the device where your app is being installed.
In my case, the "Could not write to the device" error was being caused by this:
Feb 27 10:54:58 iPhone-7-110 installd(MobileSystemServices)[46] : 0x16f92f000 -[MIBundle _validateWithError:]: 38: Failed to load Info.plist from bundle at path /private/var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.ebmR6U/extracted/SampleApp.app/Frameworks/SomeFramework.framework
Which clearly hints at what's actually going on. I had forgotten to set an Info.plist file for my dynamic framework target (used by the app).
I had a symlink in my project to a file outside of the project. When I deleted this symlink the install worked fine.
I was having the same error, i just deleted the project and fixed!
Go to Window -> Project and right click, and remove from projects!
In the case of your device have an app with the same bundle identifier, Xcode will throw this error.
Try to delete potential app with the same bundle identifier.
Check your provision profile, maybe you are using the app store provision profile like me. I had to change the app store provision profile to development, now it's working.
Tried all of the above answers: Deleting the app, clearing storage space, cleaning the project...
What finally worked was bumping the build number in info.plist (General > Build)
For anyone still facing this Issue:
There are so many reasons and this is one of them as it happened to me.
I've faced the same problem and I was connected wirelessly and If you are trying to install the application in wireless connecting mode (connected through same network), this might probably because of poor internet connection. Check your internet connection and try again, it works fine...
Get rid of embedded libraries, dont' just throw it in there make sure it is embedded indeed.
If you use your iPhone for debug, maybe, because your iPhone's storage space is less than your debug App.
Clean your iPhone --- Real machine
Clean your Mac --- Simulator
This looks like another time waster courtesy of Apple's amazingly high class development team. On iOS11 Xcode9 (pick your beta, any one works) this will happen randomly. Appears to be more frequent if you dare to switch apps while compiling. Just build again and stare at xcode - it'll work the second time without fail in my experience.
Apparently this message can also appear if the system clock of device where the app is being installed is too far away from the current time.
I was doing some tests with date formatters by changing my iPhone's system clock and eventually forgot to reset it to the current time. Afterwards it always displayed the same message ("could not write to the device.") whenever I attempted to run the app. Simply resetting the clock in Settings fixed the issue.
Nothing helped me. I followed the below steps,
Clean derived data folder
Quit Xcode and disconnect device
Restart Macbook
Restart Device
Open Xcode
Clean and run the project
Finally I got it working!!
I am facing same issue then solved out follow this step and now its working.
Deleting the app from the device
Try to install another application
Remove derived data in X-code.
Restart X-Code then clean and build the project then run.
It's still not working then
Remove un-used application
Restart the device and check the Available and capacity in settings
Again app run in device
I hope its worked, enjoy it.
My problem was I had initially installed the app using a different set of developer credentials on the device. Deleting the app from the device fixed it.
Maybe it can be due to the following error App installation failed. No code signature found. In my case after a project clean the description of the error switched to "No code signature found".
In my case I created two frameworks but they had the same bundle identifier.
This caused the installation to fail, so double check the frameworks bundle identifiers and make sure that each of them have a unique bundle identifier.
Environment: Xcode 10
sometime this error occurs due to wrong certificate.Please make sure your certificate.
Also this the error shown if your machine running Xcode is low on space.
Once I had to load an App Container for debugging purposes into an iPad, said operation failed because the container was too big (18 GB) for this device (16 GB minus the OS), so that I desisted the task and completly forgot about it, leaving the failed installation in the device. Later, when trying to install a different application this error appeared, once I got rid of the failed app installation, everything got back to normal.
Basically, your Ipad might be low in storage.
One reason this can happen is if your app bundle contains broken symlinks.
I have never had a problem like this but its clear a thorough clean out of all app data related to my project needs to be done as I am getting a crash related to UICollectionView which I have no removed any reference to in its entirety. I have tested the build on the simulator after resting its contents and it runs without the crash.
For building to my iPhone, I have deleted the app, restarted my iPhone, cleaned the project in Xcode, quit Xcode, restarted my computer and re-built and run. However my iPhone seems to be remembering something from that old build, resulting in this error to still be prevelent.
So how can I truly once and for all (without restoring my bleeding iPhone) clean out any old data related to my Xcode build?
Thanks.
Deleting the app on your phone should be sufficient. Your phone will not "remember" the app, as you suggest it might be. The only thing an app can physically leave behind after being deleted is anything that it put into the Keychain, such as a username/password that was saved there. Other than that, nothing can be left behind after an app deletion (at least not for practical purposes, I'm not trying to claim that iOS zeroes out the bits).
That said, obviously do a clean in Xcode and then delete your derived data. For full instructions on doing a complete clean, see the answer to the following question: How to Empty Caches and Clean All Targets Xcode 4
Have you tried deleting the Derived Data in Organizer? Press Command-Shift-2 and go to the Projects tab. Under your projects you should see a long path to Derived Data. Delete that, restart your computer, and let Xcode reindex your project. Link to a screenshot
Before anyone just assumes what I am saying here, please read what I have to say.
I have read the hundreds of posts on this topic and have tried pretty much all the suggested resolutions, in no particular order:
Quitting Xcode
Deleting the derived data folder
Cleaning the project
Hard resetting iPhone
Resetting Mac
Tried a second iPhone
Different USB port
All these in 'special' order
Checked code signing attributes
"Validate Settings" returns no problems
Validation returns no problems
I am stumped when it comes to this. The only thing I can think of is actually resetting my phone, but don't see how this could help when it doesn't work on the second phone either.
Are there any other suggestions, tips, ideas on what could be causing this rather annoying bug?
UPDATE: The exact error:
Error launching remote program: No such file or directory (/Users/Username/Library/Developer/Xcode/DerivedData/ProjectName-dnfacjtdklqktcazrpfyupofdryp/Build/Products/Debug-iphoneos/ProjectName.app/ProjectName).
To get the error, I do any combination of the listed steps above, then click Run on "My Device" (an iPhone 4). Application never installs to the phone and Xcode reports the application has finished running then shows the above error.
My problem was cause by me accidently changing the "Deployment Target" (ios version) to a version higher than what was on the phone I tried to run the code on.
Change the deployment target to below or equal to the ios software version on your phone.
(this answer wasn't on your list) :)
I have trouble uploading my application to app store. When I try to archive my project for validation i get an error:
warning: iPhone/iPod Touch: BMELogo.png: icon dimensions (0 x 0) don't
meet the size requirements. The icon file must be 57x57 pixels, in
.png format (-19014) Unable to validate your application. - (null)
I have checked and re-checked my icon for both size and type. My icon is 57x57 and a PNG.
Do any of you know what to do?
in advance thanks :)
This is a weird error, but it could be similar to what happens when apps on the phone don't match what you see in the simulator. Here's a few things to try:
As Damo mentioned, this is most likely a capitalization issue. Make sure that the filename as specified in the plist matches the case of what's on disk. Devices (and the app store) are case-sensitive, but your Mac is not. If it works in the simulator but not on device, you probably have a capitalization problem.
You might need to Clean (from the Build menu) the project and rebuild. Sometimes XCode just gets confused, especially if you've been moving or renaming images. Quitting & restarting XCode might help, too.
Nuke the site from orbit -- manually delete all of the project's output files. Sometimes XCode keeps old versions of image files around packaged somewhere hidden that cleaning doesn't get rid of.
Start over from scratch. Choose a different name, one where you're sure there's no legacy object file lingering about.
Also, you might want to make sure that you are using the latest version of the Application Loader, you can download the latest by logging into iTunes Connect and clicking on Manage Your Applications, the download is at the bottom of the page.
After you download the installer, close down Xcode, then run the Application Loader installer, then relaunch Xcode, load your project, do a clean on the project, and then archive and try the validation.
I had this error too. You need to reinstall Application Loader which you can get from here https://itunesconnect.apple.com/apploader/ApplicationLoader_2.5.1.dmg