unable to install

[jmburnod]

Hi All,
I get an error message « unable to install » when i try to install my on my iPad (iPadair2 iOS 13.1.2, LC 9.6.4, xCode 12.5.1.)
I also noticed that many app doesn’t appear on installed app list.
I suspect an ios version probleme (13.1.2 is old now)
Thanks for yours advices
Kind regards
Jean-Marc

[jameshale]

I'm getting it too LC 9.6.6 rc1, xcode 13.2
now trying LC965 xcode 12.5.1
same.
Tried previous builds that I was able to install.
Same.
But something has obviously changed.

Tried restart in case of some rubbish in a temp file or ...

no change
most confusing

[jameshale]

has nobody else come up against this?

[jacque]

Did you try deleting any existing copy before installing the new one? Also, are you installing to a cabled device with the Test button, or from an ad-hoc distributed app? The Test button usually takes care of the existing copy for you.

One common reason for an inability to install is that the development profile isn't correct or has expired, or that you're using a distribution profile to build a development version.

[jameshale]

Hi @jacque, yes one of the first steps was to delete the previous version.
I built the new version and tried to install via xcode’s devices window , where I just drag the app onto the device. This was how I has installed previous versions.
I got the message at this point.
I then tried dragging the previous copy (that I has just deleted) back onto the device.
Same message. Where it had worked 3-4 weeks ago.
I will investigate the profile.

[jmburnod]

Hi,
Thanks for your hints.
How do you understand that previous version of my app doesn't appear on installed app list and xCode ask me if i want replace it ?
Best regards
Jean-Marc

[williamdesmet]

Hi there,

I run into the same thing now.
Dit anyone solve this?

Mac OS 11.5.2 , Xcode 13.2 (13C90), LC 9.6.7 en iOS 15.2
It also happend on older iPads with older systems like iOS 13.5.1.
Building the app is no problem and gives no error message on my Mac
Putting the app with Xcode on my iPad however gives an error: Unable to Install App

I checked the Provisioning Profile but the iPad is listed on it.
I did know this because there are other apps on it.
I did work before.

[jacque]

I wonder if it is related to the Apple Intermediate Certificate which needs to be updated:
https://developer.apple.com/support/expiration/

[williamdesmet]

Thanks Jacque.
That was indeed the issue and related double entries in Apple Keychain.
Got it solved now.
Happy Days!