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Common System Errors
Yong Zeng edited this page Oct 29, 2019
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Rather than returning errors in ADAuthenticationErrorDomain, ADOAuthServerErrorDomain, ADBrokerResponseErrorDomain, ADKeychainErrorDomain and ADHTTPErrorCodeDomain (see ADAuthenticationError.h for more details), ADAL could also return errors in system error domains.
Here we create a page to list some common system errors we have seen (the list is not complete and will be updated based on our observation and investigation):
| ErrorDomain | ErrorCode | Reason |
|---|---|---|
| kCFErrorDomainCFNetwork | 310 | A connection could not be established to the HTTPS proxy. It should be some issue with customer's proxy settings in iOS. |
| kCFErrorDomainCFNetwork | 311 | The HTTPS proxy returned an unexpected status code. It should be some issue with customer's proxy settings in iOS. |
| kCFErrorDomainCFNetwork | 306 | A connection could not be established to the HTTP proxy. It should be some issue with customer's proxy settings in iOS. |
| NSPOSIXErrorDomain | -9858 | errSSLHandshakeFail. Most likely it the server SSL issue. |