Hi We have an app (ios) that communicates with Azure WebApp backend working on TLS1.2 Since mid May we recieve complants from our customer that the connection fails. This happens regulary and almost of the time when using 3G/4G cellular data. I can simulate this issue (on 4G with good connection) The customer can use the app but after some API requests we get an exception: NSLocalizedDescription=NSURLErrorDomain Code=-1200 "An SSL error has occurred and a secure connection to the server cannot be made., NSErrorFailingURLKey=https://sxxxx.azurewebsites.net./api/AppRequest., NSUnderlyingError=0x2831ff810 {Error Domain=kCFErrorDomainCFNetwork Code=-1200 "(null)" UserInfo={_kCFStreamPropertySSLClientCertificateState=0, _kCFNetworkCFStreamSSLErrorOriginalValue=-9816, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9816, _NSURLErrorNWPathKey=satisfied (Path is satisfied), viable, interface: pdp_ip0, ipv4, ipv6, dns, expensive}}, _kCFStreamErrorCodeKey=-9816} We connect directly to domain from azurewebsites.net (we don't use online custom domain). Build with XCode 13.3 We don't use client authentication. Any idea's what is wrong? Regards Peter.