Sign In With Apple - invalid_client

Question

Created Jun ’25

Replies 6

Boosts 4

Participants 7

I am trying to implement Apple Login on the web. The language I am using is PHP.

I have created the App ID, Service ID, and Key. In the Service ID, I clicked the Configure button for Sign In With Apple and entered the domain and return URL.

However, when I click the login button, I only get an "invalid_client" error screen.

Answered by DTS Engineer in 892062022

Hi,

To learn more about troubleshooting these response errors, see the post below:

Gathering required information for troubleshooting Sign in with Apple authorization and token requests

https://developer.apple.com/forums/thread/801173

Cheers,

Paris X Pinkney |  WWDR | DTS Engineer

Answer 1

zeynep-gksy OP

Jun ’25

The same thing happened to me. I had already implemented Apple Sign In for one web application, and then I needed to implement it for another one. I'm using the popup method to get the authorization code from Apple. I double-checked the Service ID and return URLs I'm using, but I'm still getting the invalid_client error on the first request made to Apple to retrieve the authorization code. I'm implementing it the same way I did before. I can't see where is the problem

Answer 2

Jack007 OP

Jun ’25

The same thing happened to me.

Answer 3

chriswoafy OP

Jun ’25

Same Issue over here, driving me nuts and found out everyone are experience the same issue.

Answer 4

debugzen OP

Jun ’25

same here.

Answer 5

younghae OP

Jun ’25

I'm dealing with the same problem. Can't Apple solve it?

Answer 6

DTS Engineer OP

Apple

4d

Recommended

Hi,

To learn more about troubleshooting these response errors, see the post below:

Gathering required information for troubleshooting Sign in with Apple authorization and token requests

https://developer.apple.com/forums/thread/801173

Cheers,

Paris X Pinkney |  WWDR | DTS Engineer