Unable to verify enterprise apps. Service ppq.apple.com return error 503

Developer Tools & Services General
Evgeny G. OP
Created Jan ’18
Replies 10
Boosts 1
Views 26k
Participants 11

Today i found that my enterprise apps with valid distribution certificates and provisioning profiles not work at all. In General -> Profiles & Device Management its not verified. When i'm trying to verify apps i'm catching the warning with the following:


"Unable to Verify iPhone Distribution: My Distribution certificate" Apps. A network connection is required to verify "iPhone Distribution: My Distribution certificate" apps on this iPad. Connect to the Internet and try again".


But everything is OK with my internet connection. I found even here: https://support.apple.com/en-gb/HT204460 that there is a service ppq.apple.com, that verifies enterprise apps, but this service is unavailable on link: https://ppq.apple.com , return error 503.


Whats happened and how can i fix this issue?
And how periodically does the Apple device checks the verification status of the distribution certificates of my app?
Am i alone face this issue?

Replies  10
Boosts  1
Views  26k
Participants  11
rofc OP
Mar ’18

Idem here. Which are the Apple’s tests and monitoring for this issues?

0
marco98 OP
Mar ’18

I'm having the same problem.

0
Rajni OP
Oct ’18

Facing the same Issue. Also need to know, Can anyone confirm about the page opens using this "https://ppq.apple.com/" would always show Http:/1.1 Service Unavailable.


Is it not working or else shows the same always.

0
Blake.w OP
Oct ’18

Having the exact same problem.

0
Joseph32 OP
Feb ’19

It is normal that https://ppq.apple.com shows Http:/1.1 Service Unavailable. The ability to fix the verification of apps on an enterprise certificate can be done by tapping "Verify Apps". If you hit that once and it doesn't verify them you muste delete the certificate/all apps on that certificate because your certificate has been revoked. To answer you question on how periodically Apple checks the verification status of distribution certificates is that it takes approximately 3 weeks for apps to revoke when it cannot make connections to both ocsp.apple.com and ppq.apple.com

0
Vanluke OP
May ’19

Actually this is not normal, and this response could send people down a wrong path. when you are seeing the "Http:/1.1 Service Unavailable" message from a location that can normally access it, the service is unavailable. When you are accessing it correctly you will get a Certificate Error from your browser as it doesnt recognize the credentials (its meant for your phone I am guessing).


We were getting this exact verification issue, and as soon as the Service Unavailable message went away (about an hour after we started getting reports from users) our apps fired right up and started working again.

0
471815256@qq.com OP
Nov ’19

I have the same problem. In the iOS 13.1.3 system version, some users solved the problem after upgrading to iOS13.2.3, but we don't know why.

0
oab OP
Dec ’19

I have the same problem when tried to verify apps on iOS 13.2.3. It solved after I updated to 13.3

0
iruhi7 OP
Jun ’21

Same thing happening to me!

0
on29-dev OP
Dec ’23

iOS 16, iOS 17 Same problem, help me

1
Unable to verify enterprise apps. Service ppq.apple.com return error 503
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