After iOS 17.4 update Wi-Fi doesn't work on iPhone 14 Pro Max

This worked for me!! To remove VPN settings installed by a configuration profile, go to Settings > General > VPN & Device Management, select the configuration profile, then tap Remove Profile. This also removes other settings and accounts provided by the profile. There was a VPN for McAfee and once I deleted it, my phone instantly connected to Wifi.

Updated today (3/28/24) to ios 17.4.1. and lost wifi. Tried network reset, etc., other things posted on other sites, but the post above was the ticket. I also had McAfee VPN setup and after deleting it wifi instantly restored. Thanks!

Tried all that was suggested but nothing worked till i disabled “Private Wi-fi address”. Speeds are back to normal. Tested if this was the cause by re-enabling “Private Wifi address”. As soon as it was enabled it slowed wifi slowed to a crawl . Once disabled back to 300+Mbps from less than 10.

Hope this info helps someone.

If your WIFI network is using whitelist for allowed MAC address - this address might have been changed (randomly rolled again). Nowadays MAC is change'able by software and iOS devices use virtual MAC to protect the real "physical" one and avoid tracing.

This is a kind of setting on the wifi network list on the iOS device. Just make the unsuccessfull connection and watch for the network name SSID to show on the list, then use the info icon to dig in this network settings and:

a) write down the MAC used for "private address" option, or

b) not-recommended: turn off this setting and wtite down the physical MAC

Then change your router settings by adding this address to white list, or (not recommended if already whitelisting) turn off whitelist check to let your phone in.

*this address is not randomly generated every time, but may change from time to time for unknown reasons - apparently it happened for my phone during some OS upgrade

It worked for me after changing the DNS to public IP 8.8.8.8 and it worked. Settings-->WiFi-->Select your WiFi information--> Configure DNS --> Manual --> 8.8.8.8

disabling the SurfVPN worked for me. looks like VPN is the culprit

Yes!! Deleting VPN on IPhone 14 worked - thank you!! Sorry for the exclamations, but there was serious fury here and so thank you again- my husband is no longer scared of me

I've been experiencing this issue for nearly a month and a half now after updating my iPhone 12 to iOS 17.4.1 and I just came across this forum and I deleted all my VPN settings and restarted my iPhone and my WiFi, Bluetooth, flashlight, and back camera is working once again. Thank you!

I contacted Apple Support a while back and they said that the motherboard was damaged when they did a remote diagnostics. They referred me to an Authorized Agent in my country, Trinidad and Tobago to repair my iPhone and the cost was about $4,000.00 TTD (around $589.54 USD) and it was absolute craziness!

I was no longer under warranty and I think that an iOS update should have patched these things up or Apple should have done a little better since I have been a very long standing customer for quite a while now.

Once again, thank you guys! The steps were pretty helpful and I hope lots of more people who are experiencing the same issue, get to these forums.

Thank You! it worked on iOS 17.4.1 !

I was hopeless, after resetting network settings, rebooting, flight modeing etc etc many times.

My device is enrolled with the organization I work for. Internet would be extremely slow or not work at all, especially if I were trying to stream video. I just tried disabling and re-enabling Web Protection in the Defender (MDE) app and this has fixed my issue (doing this also disabled and re-enabled VPN in the background). At least for now, hopefully it lasts.

I think the problem is the upgrade messed up the VPN connection. You need to delete the bad connection and reinstall a working one. Since you don’t have to upgrade again (for a while), you won’t be doing the thing that messed up the connection.

I tried removing my SIM card and it worked for a while, but then lost connection again.

I lost WiFi after 17.3 I’m personally hoping 17.4 update resolves whatever apple messed up. I even had my phone checked out to make sure hardware wasn’t broken.

WiFi greyed out and I lost Bluetooth. All support could recommend was buying a new phone. I deleted vpn, reset network settings, and tried a backup from a year prior. Whatever apple did seriously messed up a lot of phones. The fact that they can’t put a patch out when so many customers are having issues is pretty sad.