Explore the intersection of business and app development. Discuss topics like device management, education, and resources for aspiring app developers.

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External UUID
Hello, I am Sergio Sánchez, administrator of NumbuX. We are developing our own MDM. We are already granted as a MDM Vendor. We need to issue the APNs certificate for our MDM for the first time in the Push Certificate portal (identity.apple.com). We are having the error: “invalid signing request” when we upload the signed CSR to identity.apple.com. That is because we do not have the External UUID. Could you please let us know what is our External UUID? Without that, we cannot upload it successfully. We have already compared different signed CSR from other MDM Vendors and all have included the External UUID in the CSR. Please, do not send links, there is not way for us to know our External UUID because it is the first time that we try to issue this APNs. After the first time, we do not need your assitance. Please, let us know our External UUID. Thank you. Kind regards.
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Oct ’25
Enterprise App Crashes on Launch on iOS 18.3.2
We have an office application used internally within our enterprise. The Provisioning Profiles (PP) for the app were about to expire, so we updated the PP and released a new version. However, we've encountered an issue where some users did not update their phones in time. After the app expired, they found it unusable and downloaded the new version, but the newly downloaded app also crashes on launch. Restarting the phone does not resolve the issue, and this primarily occurs on iOS 18.3.2. What could be the cause of this problem, and how should we address it?
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Apr ’25
Apps installed on child device is not showing on Parent Device
I am creating a prototype with the new Screen Time API introduced by Apple. The issue I am facing is, Applications installed in child device is not showing in parent device with FamilyActivityPicker. It is showing in Child device and apps can be shielded from child's device. Can some one describe, how to list the apps in parent's device. Both Device are running in iOS 15.3. Both falls in same family group Child is under 13 yrs old Screen Time enabled in both device and parent device can see child in Screen Time.
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1.3k
Feb ’25
iOS 18.3.2 Enterprise App Crashes on Launch - SecKeyVerifySignature Failed
We are encountering a critical issue where an enterprise-signed iOS app crashes immediately after installation on devices running iOS 18.3.2 (22D82). The same app runs fine on other iOS versions (including iOS 18.3.1 and earlier). Issue Summary: After upgrading to iOS 18.3.2, users are unable to launch our enterprise app (Bundle ID: com.kt.MobileDRM). The app installs successfully but crashes immediately upon launch. This issue occurs only on iOS 18.3.2, not on earlier versions or other iPadOS/iOS devices. System Log Snippet: SecKeyVerifySignature failed: Error Domain=NSOSStatusErrorDomain Code=-50 "rsa_pub_crypt failed, ccerr=-7" UserInfo={numberOfErrorsDeep=0, NSDescription=rsa_pub_crypt failed, ccerr=-7} Additional Info: The app is signed with a valid enterprise certificate. No changes were made to the app binary or signing configuration before this issue started. We are not using an IPS file. A similar app (different bundle ID) shows the same behavior on iPadOS 18.3.2 but runs fine on other versions. Questions: Has there been a change in iOS 18.3.2 that affects enterprise certificate validation? Does ccerr=-7 indicate a cryptographic change or stricter signature verification? Are there updated requirements or provisioning profile constraints we should be aware of for iOS 18.3.2? We would greatly appreciate any insights or official guidance regarding this issue. Thank you!
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Apr ’25
Managed Apple ID - Testflight not useable
Hi, I run a midsize business. Apple recommends for company owned devices and for other reasons to use Apple Business managed Apple IDs for the employees. After that, you have to use a MDM System for e.g. deploying apps and licenses. Testflight is an app that can be deployed too. But....Testflight can not more than to say "Hello" on a managed device. The use of Testflight and to test our developed apps is not possible with a managed ID. Can anyone explain to me this thinking or what is recommended than. Setting up a private Apple ID for that purpose...which on the other hand, Apple do not want or does not recommend.
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2.2k
Oct ’25