MS Authenticator error in iPhone 14

Question

Folks,

My company phone is iPhone 14. I hit error in setting up MFA using MS Authenticator for portal.azure.cn. I got a popup of 'Device does not trust the certificate configured on the server'. In MS Authenticator log I found the following.

2022-10-13 18:48:15.155 ERRO PhoneFactor 0 TID=1 272 (sendRequestAsync(_:requestData:session:retryCount:successHandler:errorHandler:)) Http request failed
Error Domain=NSURLErrorDomain Code=-1200 "An SSL error has occurred and a secure connection to the server cannot be made." UserInfo={NSErrorFailingURLStringKey=https://mobileappcommunicator.auth.microsoft.cn/activate/665622909/CNE/PfPaWs.asmx, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFStreamErrorDomainKey=3, _NSURLErrorFailingURLSessionTaskErrorKey=LocalUploadTask [0932D60A-1E2B-4B98-83DE-97110836D500].[1], _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalUploadTask [0932D60A-1E2B-4B98-83DE-97110836D500].[1]"
), NSLocalizedDescription=An SSL error has occurred and a secure connection to the server cannot be made., NSErrorFailingURLKey=https://mobileappcommunicator.auth.microsoft.cn/activate/665622909/CNE/PfPaWs.asmx, NSUnderlyingError=0x2816c5890 {Error Domain=kCFErrorDomainCFNetwork Code=-1200 "(null)" UserInfo={_kCFStreamPropertySSLClientCertificateState=0, _kCFNetworkCFStreamSSLErrorOriginalValue=-9816, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9816, _NSURLErrorNWPathKey=satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns, flow divert: 2}}, _kCFStreamErrorCodeKey=-9816}
Inner Error: Error Domain=kCFErrorDomainCFNetwork Code=-1200 "(null)" UserInfo={_kCFStreamPropertySSLClientCertificateState=0, _kCFNetworkCFStreamSSLErrorOriginalValue=-9816, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9816, _NSURLErrorNWPathKey=satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns, flow divert: 2}

2022-10-13 18:48:15.162 ERRO PhoneFactor 0 TID=1 656 (-[AddAccountFlow onError:])
Error Domain=NSURLErrorDomain Code=-1200 "An SSL error has occurred and a secure connection to the server cannot be made." UserInfo={NSErrorFailingURLStringKey=https://mobileappcommunicator.auth.microsoft.cn/activate/665622909/CNE/PfPaWs.asmx, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFStreamErrorDomainKey=3, _NSURLErrorFailingURLSessionTaskErrorKey=LocalUploadTask [0932D60A-1E2B-4B98-83DE-97110836D500].[1], _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalUploadTask [0932D60A-1E2B-4B98-83DE-97110836D500].[1]"
), NSLocalizedDescription=An SSL error has occurred and a secure connection to the server cannot be made., NSErrorFailingURLKey=https://mobileappcommunicator.auth.microsoft.cn/activate/665622909/CNE/PfPaWs.asmx, NSUnderlyingError=0x2816c5890 {Error Domain=kCFErrorDomainCFNetwork Code=-1200 "(null)" UserInfo={_kCFStreamPropertySSLClientCertificateState=0, _kCFNetworkCFStreamSSLErrorOriginalValue=-9816, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9816, _NSURLErrorNWPathKey=satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns, flow divert: 2}}, _kCFStreamErrorCodeKey=-9816}
Inner Error: Error Domain=kCFErrorDomainCFNetwork Code=-1200 "(null)" UserInfo={_kCFStreamPropertySSLClientCertificateState=0, _kCFNetworkCFStreamSSLErrorOriginalValue=-9816, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9816, _NSURLErrorNWPathKey=satisfied (Path is satisfied), viable, interface: en0, ipv4, ipv6, dns, flow divert: 2}

Can you please help me understand this error?

Chun-Yen