# SDK authentication failed, error code: 2

**URL:** <https://devforum.zoom.us/t/sdk-authentication-failed-error-code-2/29018>\
**Category:** iOS\
**Created:** [September 3, 2020, 9:16am UTC](https://devforum.zoom.us/t/sdk-authentication-failed-error-code-2/29018 "2020-09-03T09:16:56Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![luca.milanesi](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/luca.milanesi/32/14623_2.png) [@luca.milanesi](https://devforum.zoom.us/u/luca.milanesi)\
**Post date:** [September 3, 2020, 9:16am UTC](https://devforum.zoom.us/t/sdk-authentication-failed-error-code-2/29018/1 "2020-09-03T09:16:56Z")

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**Description**  
Every time I try to authenticate the SKD, I got this error (code 2)  
The documentation says to contact the support in this case.

This is my code:

- (void)SDKAuth:(NSString \*)clientKey clientSecret:(NSString \*)clientSecret  
{  
clientKey = clientKey;  
clientSecret = clientSecret;  
MobileRTCAuthService \*authService = [[MobileRTC sharedRTC] getAuthService];  
if (authService)  
{  
authService.delegate = self;  
authService.clientKey = clientKey;  
authService.clientSecret = clientSecret;

- (void)onMobileRTCAuthReturn:(MobileRTCAuthError)returnValue  
{  
NSLog(@“onMobileRTCAuthReturn %d”, returnValue);

In the didFinishLaunchingWithOptions:

```
MobileRTCSDKInitContext *context = [[MobileRTCSDKInitContext alloc] init];
context.domain = kSDKDomain;
context.enableLog = YES;
context.locale = MobileRTC_ZoomLocale_Default;
MobileRTC *mr = [MobileRTC sharedRTC];
[mr initialize:context];

[self SDKAuth:kSDKAppKey clientSecret:kSDKAppSecret]; 

```

**Smartphone (please complete the following information):**

- iPhone 7
- iOS 13.6.1

---

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**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\
**Post date:** [September 3, 2020, 7:28pm UTC](https://devforum.zoom.us/t/sdk-authentication-failed-error-code-2/29018/2 "2020-09-03T19:28:49Z")

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Hey @luca.milanesi

Thanks for using the dev forum!

This error actually just means the key and/or secret are incorrect. Are you getting the clientKey and clientSecret from [https://marketplace.zoom.us/](https://marketplace.zoom.us/)?

Thanks  
Michael

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<div class="post-metadata">

**Author:** ![luca.milanesi](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/luca.milanesi/32/14623_2.png) [@luca.milanesi](https://devforum.zoom.us/u/luca.milanesi)\
**Post date:** [September 4, 2020, 7:57am UTC](https://devforum.zoom.us/t/sdk-authentication-failed-error-code-2/29018/3 "2020-09-04T07:57:57Z")

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Good morning. I use the key provided also for the android App, that works

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**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\
**Post date:** [September 4, 2020, 6:38pm UTC](https://devforum.zoom.us/t/sdk-authentication-failed-error-code-2/29018/4 "2020-09-04T18:38:43Z")

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Hey @luca.milanesi

What domain are you using?

Thanks!  
Michael

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<div class="post-metadata">

**Author:** ![luca.milanesi](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/luca.milanesi/32/14623_2.png) [@luca.milanesi](https://devforum.zoom.us/u/luca.milanesi)\
**Post date:** [September 7, 2020, 7:45am UTC](https://devforum.zoom.us/t/sdk-authentication-failed-error-code-2/29018/5 "2020-09-07T07:45:27Z")

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> **[Video Conferencing, Web Conferencing, Webinars, Screen Sharing](https://zoom.us/)**
>
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I have found the bug checking the chars for the keys. the last chars missed. Thanks for help. I ave found the bug with your help.

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<div class="post-metadata">

**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\
**Post date:** [September 8, 2020, 11:26pm UTC](https://devforum.zoom.us/t/sdk-authentication-failed-error-code-2/29018/6 "2020-09-08T23:26:36Z")

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@luca.milanesi

Awesome! I am glad to hear it is working now!

Michael