ppq.apple.com returning 502 Bad Gateway - Unable to verify developer apps on device

Code Signing Certificates, Identifiers & Profiles

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Created Mar ’26

Replies 139

Boosts 172

Views 13k

Participants 128

Since this evening (March 10, 2026), I'm unable to launch any developer-signed app on my physical device (iPhone 16 Pro Max, iOS 26.4 beta 23E5223k). The error is:

"Unable to launch [app] because it has an invalid code signature, inadequate entitlements or its profile has not been explicitly trusted by the user."

On the device itself, it shows: "Unable to Verify App - An internet connection is required to verify the trust of the developer."

What I've tried:

Created a new Apple Development certificate
Deleted and reinstalled the app
Restarted the device
Tested on both Wi-Fi and cellular
Confirmed Developer Mode is enabled
Removed all third-party CA certificates from the device
Verified the code signature is valid (codesign -dv shows correct Authority chain)

The root cause:
https://ppq.apple.com is currently returning 502 Bad Gateway. I confirmed this both from my Mac (curl -s -o /dev/null -w "%{http_code}" https://ppq.apple.com → 502) and from Safari on the device.

This affects all developer-signed apps, not just a specific project.

Is anyone else experiencing this? Is there an ETA for the fix?

Environment:

Xcode 26.3 (17C519)
macOS 26.3.1 (25D2128)
iPhone 16 Pro Max, iOS 26.4 (23E5223k)

Answered by DTS Engineer in 879488022

Well, that was exciting |-:

It looks like Apple fixed the issue.

Yep.

I can’t really go into details here, other than to say that:

ppq.apple.com is a service on the critical path for the trusted execution of code in some situations [1].
It was having problems.
Those are now fixed.

I don’t have time to read through all 10 pages of posts on this thread. So, if there’s something you want to draw my attention to here, I recommend that you start a new thread with the details.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

[1] There might be more info about it on the enterprise support side of things, but the only developer-focused reference I could find for it was in an old Xcode help page: Manually trust a developer on iOS.

pabugeater2 OP

Mar ’26

At least Mac Catalyst app dev still works.
I did essentially all you did except probing https://ppq.apple.com. How did you know about that?

Bina305 OP

Mar ’26

Somehow chatgpt and claude know about ppq... but same boat here. Not working... but failing faster without any messages

koroshino OP

Mar ’26

Same here

kuzminnn OP

Mar ’26

By the way guys if you are chillin out here, have you seen new Ferrari's presentation with the Jony Ive? Do you agree Jony brings back those wow product vibes again? https://www.youtube.com/watch?v=BhVjIw9cv_4

lumicron-dev OP

Mar ’26

Same issue here as of 2pm eastern time on march 10 2026

EssDeez OP

Mar ’26

Same here. Wasted half an hour restarting, refreshing, reinstalling etc.

ran “curl -I https://ppq.apple.com%E2%80%9D in terminal and got the 502 message.

bream OP

Mar ’26

same here "Unable to Verify App"

jessemmoore OP

Mar ’26

We are having the same issue. This is effecting our company wide enterprise app.

sevendays OP

Mar ’26

I have the same issue since hours ago.

Bina305 OP

Mar ’26

Does Apple know that this is happening and how severe it is since it is a work stopper? Also how will we know when the ppq server is back up?

chrisc3 OP

Mar ’26

I am also having this issue

Vinesh13 OP

Mar ’26

Same here, wasted more then 2 hrs debugging this issue

JointAccounts OP

Mar ’26

Happening for us as well. We were testing a new build of one of our apps all morning and just started getting the Unable to Verify App message about an hour and a half ago. How do we know Apple is aware of the problem when the status page shows all green?

Palmerodev OP

Mar ’26

same here jajaja

CrayonUK OP

Mar ’26

Like some I expect I spent ages dealing with the direct message before realising the ppl.apple.com was returning a 502.

supernovawho OP

Mar ’26

Same! ☝🏼️

brandonbutler_G OP

Mar ’26

@pabugeater2 See https://support.apple.com/en-us/118254

And we just noticed this issue as well for our Firebase distributed apps.

zacmccormick OP

Mar ’26

I've been troubleshooting this problem for a couple hours now and landed here. Ugh.

Status page all green!

https://developer.apple.com/system-status

prncvrm OP

Mar ’26

anyone from apple working on it? any ETA on the same?

PaulPlay OP

Mar ’26

Same issue. I constantly get this "Unable to verify app" error, this started happening around an hour ago.

Also tried rebooting my Apple devices, revoking the certificate and creating a new one, cleaning the build cache, trying a different app etc.

Chris2000 OP

Mar ’26

Same for me, was trying to fix it since over 1 hour... Glad to hear that the issue is not on my side

pors OP

Mar ’26

Same here. I always got the message 'Unable to Verify App...' every time I've tried to run on my device.

austins05 OP

Mar ’26

Same issues here. "Unable to verify app"

plankbyplank OP

Mar ’26

same issue, claims no connection to internet

YusufA OP

Mar ’26

Same issue its saying to verify the certificate profile in the VPN Device Management section, however the certificate does not appear. I went to profile to create new profiles, it seems all previous profiles had invalid expiration dates. Seems like an apple problem I guess we all wait?