Hi I am wanting to test a hello world app on my iPad and iPhone.
I get the following error when I try and test it on the ipad «App installation failed:There was an error communicating with your device». However, when i plug in my iphone and hit ‘Run’ it loads up fine, the simulation also works fine. Can someone please explain why i get this and how to fix it? Also where can I get more info on this error?
Thanks.
Replies
Did you answer the Trust this Mac when you attached the iPad? If not, it effectively shuts
down communications between the two devices.
Yeh I have been using it for a while, I can access it using itunes and add/remove music and apps.
Is it connected direct to the Mac, or through a hub?
Have you tried any different cables?
It’s a direct usb connection. The cord was new, but i just tried two others and its the same result.
I have encountered same error report when install app with Enterprise Deployment.Can someone please explain why?
Any update on this issue, please advise. I encounter the same issue since last week.
Has this issue been resolved???
I’m having the same problem. I’ve tried everything from recommendations on stackoverflow to this forum. Nothings working for me. I hope a rep will respond. Thanks.
Meet same problem with Xcode version 9.2 and ipad air IOS11.2
I have tried to reset the network, but it did not help.
I ran into the same issue and
- Unpair the device in Xcode.
- Clean the project.
- Unplug and then restart iPhone.
- Restart Xcode.
helps me solve it.
I see in Window -> Device & Simulators this message «To run on this device, please update to a version of Xcode that supports iOS 14.1. You can download Xcode from the Mac App Store or the Apple Developer website.»
I use iOS 14.1 and Xcode 11.7.
So after update Xcode everything works well.
You guys I faced this issue and I solve it. My role was developer on AppStore connect and I make it change as an app manager and it works.
I searched all resources last day and didn’t get a successful result. Please take it into consideration that I could test with this device a few days ago. But today I didn’t do. Also I tested this iPhone with another mac, the result is the same. The device is an iPhone 6s.
I did the following things:
-restart Xcode
-restart mac
-restart device
-clean& build project
Please help me for solving this problem.
1: 
asked Oct 12, 2017 at 13:18
Vusala HasanliVusala Hasanli
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8
I had the same problem and I restarted my iPhone. Now it’s working.
shim
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answered Mar 22, 2018 at 15:37
1
Problem was due to device OS version.I just updated device version to 11.0 and restared device.Then problem solved.Hope this comment will help to someone
answered Oct 19, 2017 at 12:43
Vusala HasanliVusala Hasanli
3892 gold badges6 silver badges21 bronze badges
For others also dealing with this problem and couldn’t find anything that worked for them. I fixed it by restarting my MacBookPro.
~~ What I tried ~~
Restarting the iPhone did not help, tried it 3 times.
Uninstalling and reinstalling the app did not help.
Changing the Wi-Fi did not help.
Restarting Xcode did not help.
Unplugging and replugging the iPhone did not help.
Disabling «Connect over network» in Xcode did not help.
~~ What I checked ~~
Xcode is the newest version.
iOS is the newest version
I couldn’t try another Mac cause I only have one.
I also only have one cable.
I only have one version of Xcode installed.
answered Aug 19, 2018 at 13:54
Ricky DamRicky Dam
1,8414 gold badges22 silver badges42 bronze badges
Please check the following notes:
-
Make sure to answer the trust this Mac when you attached the device; If the device is not trusted, it effectively shuts down communications between the two devices.
-
Try any different cable.
-
Check if you have 2 different versions of Xcode installed in your machine.
Ahmad F
29.8k16 gold badges97 silver badges141 bronze badges
answered Oct 12, 2017 at 13:44
1
Apparently, this error can occur because of multiple issues. In my case, when I restarted the iPhone, it asked me to re-enter password for my apple id. Once the password was verified, I was able to run the application on the iPhone.
answered Jan 23, 2019 at 7:19
Error happened to me because my iPad was full on disk space. I was unaware of this until I restarted it.
answered May 13, 2020 at 18:35
JaredJared
6475 silver badges15 bronze badges
I had this issue happen to my iPad 3 on iOS 9.3.5 I just needed to reboot the iPad and allow it to show me an «activation lock» screen (for some reason) that I simply had to reenter my iCloud password into. Also, it showed me the «storage almost full» message on reboot
answered Oct 1, 2020 at 17:37
aklefaklef
11 bronze badge
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Mod Requirements:
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Modded Android APK(s): https://iosgods.com/forum/68-android-section/
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Hidden Content
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Cheat Video/Screenshots:
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Failed to verify code signature?
Failed to verify code signature of /private/var/installd/Library/Caches/com.apple.mobile.installd.staging/temp.XhVlHm/extracted/AltStore.app : 0xe8008001 (An unknown error has occurred.)
Same problem here, is there a workaround?
IOS 13.3.1
almost the same when installing altstore windows
but instead 0xe8008018 (The identity used to sign the executable is no longer valid)
Not Working For Me Too.
I Reinstalled AltStore And This Happened.
This issue should be fixed on the latest versions of AltStore/AltServer. Closing this issue.
Still not fixed on the latest version
@vamgan Please provide the following information if you can:
- iOS version
- Mac or Windows
Are you having the exact same issue as @hbbxmjbb? Lastly, can you try uninstalling AltServer and using the latest beta AltServer.
Exact same issue
Windows 10
Installed and reinstalled many times the latest version: 1.3.2 beta 3
Also having this issue on latest version 1.3.2, iPhone 7 13.5 on Windows 10
Please try deleting the “adi” folder in iTunes’ file directory, then restart your computer and try again.
The first time I attempted it, AltServer exited while «installing» without any error prompt. I tried it a second time (after deleting the file again and restarting) and it continues to give me the same error. The file reappears after each reboot. I’ve already restored my phone, tried a new Apple ID, reinstalled ITunes/ICloud a few times, disabled my firewall, and a few other things.
Please make sure that your iOS Time + Date and Windows Time + Date are correct and in sync. This should fix your issue.
Solved! I guess my BIOS never had its system time set correctly and this managed to solve it after enabling automatic time setting, automatic timezones, and syncing with windows again. Thank you for the help, this was extremely frustrating.
If you have Reprovision installed try downgrading it to previous version or uninstall it..downgrading worked for me..:)
Using win7, time is correct, checked, synced once more, but didn’t helped me, still have error: «Failed to verify code signature of /private/var/installd’Library/Caches/com.apple.mobile.installd,staging/temp.4TdWwd/extracted/Altstore.app : 0xe800800d (There was an error communicating with your device.)» Altstore installing perfectly on my SE, but it is not installing on my 5S.
Update: cleared iPhone data and restored it from iCloud. Altstore installed on 5S
Sorry @cdK1337 what exactly do you mean by «cleared iPhone data»? Did you restore the phone, or use one of the options in the Reset menu? Or was it on the Mac side? I’d appreciate if you could elaborate a bit 
Hello @halfbrilliant I cleared all iPhone data from the options in reset menu, so the phone was like new. I was using windows 7. Don’t remember how I restored all data — from windows or from options on the phone, I don’t remember, but, probably, when the phone turned on, it suggested me to restore all data from iCloud.
i just got the same problem
i’m cannot install retroarch
I got similar error but with different error code: 0xe8008001 (An unknown error has occurred.)
I am getting this error
kindly help how to solve