Our app is an enterprise app via MDM. We are experiencing an issue in iPadOS 18.4 when loading an internal HTTPS server via WKWebView in a hybrid iOS app. Our server uses a self-signed certificate but lacks the digitalSignature usage in its Key Usage extension. (Currently we have no chance to change the server's certificate) We override webView:didReceiveAuthenticationChallenge:completionHandler: to trust the certificate: completionHandler(NSURLSessionAuthChallengeUseCredential, credential); This "completionHandler" works in previous 18.3.2 , but not work in 18.4. May I know is there any changes in 18.4 for the https certification? Why this delegate not work? What we can do to ignore this ssl error and get connection? Thanks in advance, look forward for your reply.