I did have the Apple sites listed in there (captive.apple.com, etc.). Ironically - I resolved the issue by REMOVING them. I also had to disable the GCMP WPA3 Encryption Cipher, in the SSID Encryption settings - when this was enabled, newer iPhones with the latest iOS version (iOS 26) could not connect. It appears the latest & greatest WiFi 7 WAPs, along with the latest and greatest Apple device/software, are simply not fully ready for production together. Meraki admitted this to me when I raised this issue - they are still working on getting WiFi 7 features to work in all scenarios. ... View more

I'm having a very similar issue in my environment - iPhones are unable to connect to my guest networks. I currently have two guest networks - both of them are using "Opportunistic Wireless Encryption (OWE)" for Security as well as a Splash page. Where they differ is one uses the "Sign-on With MS Entra ID" Splash page (used for employee personal devices), and the other uses the "Click-Through" Splash page, for Visitors. For both networks, the splash page doesn't load - they simply get the "Unable to Join Network" message. On the Entra ID-based network, I have a 0% success rate with any iPhone. The Visitor/Click-Through Splash page SSID works intermittently on older iPhones, but iPhone 17 models with the latest software do not connect at all. Any help would be greatly appreciated! ... View more