Cannot install iOS app

[pgorzelany-objectivity]

What App Center service does this affect?
iOS app distribution

Describe the bug
All devices are provisioned (green) and a release has been prepared but the testers cannot install the build.
There is no install button available for the testers, only a "GET" button. Once the tester clicks GET he gets an error "Oops,there was a problem building the app".
Automatic device management is turned on.

To Reproduce
Steps to reproduce the behavior:

1. As a tester select a release
2. Click GET

Expected behavior
The app should be downloaded on the device

Screenshots

iPad (please complete the following information):

• Device: iPad
• OS: iOS 12.4
• Browser Safari

[weslley39]

Same issue here 😞

[weslley39]

The problem was that Apple updated the format of their UDIDs from their previous generations iPhones to the iPhone XS.
This issue is only happening on iPhone XR for me.

[lumaxis]

We believe we have identified the cause of this issue and are working on a fix that should be available within the next few hours 🙏🏼

[pgorzelany-objectivity]

@lumaxis thanks for the quick response. Our testers are now able to install the app :)

[lumaxis]

Cool, thanks for confirming @pgorzelany-objectivity ! I'll close this Issue.

@weslley39 If you're still experiencing a problem, please reply here or open a new Issue with details.

[tomduncalf]

Hey @lumaxis, I am seeing this issue on an iPhone XR and two iPad Pros, both of which have the new style UDIDs (they are first devices with this style UDID I have tried). As you say the issue should be fixed, is there any way I can get more debug info?

[klogeaage]

Hi @lumaxis, could this have been resurfacing recently? I have two testers that can no longer install my app on their XS and X phones, while the rest with older devices have no problems. The testers with X-devices used to be able to do so, but now get the "Oops! There was a problem..." message. Since they are unable to start the app, I really don't have much more information.

[techericb]

Hi @klogeaage, did you ever find a resolution? I am seeing the same issue with my testers now (the latest tester is using XS.

[klogeaage]

Yes I did. The problem was that my testers devices got deprovisioned because of an issue with my Apple developer account. This can happen if Apple update the legal agreement and want you to reconfirm that you accept it. They did that very recently.
To see if this is the case, go to the Distribute menu in AppCenter and select Group and then Devices. There your are likely to see that they are not all Provisioned. You will then need to login to your Apple developer account and accept their updated conditions. Then go back to AppCenter and run through the automatic provisioning process again. And then you should be good again - until next time. Hope this helps, otherwise write to Microsoft with the chat function in AppCenter and they will respond rather quickly.

[omatrot]

I have the same problem today with an iPhone 8 Plus running iOS 14.3.
Is there a way to see logs on server side ?

[omatrot]

I have solved it by clearing the browser cache from the Settings app.