iPad Mini 4 says "Unable to join network @@@@"

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If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support

If you have a VPN App or profiles installed, or a security App such as Norton, these may be interfering with DHCP and preventing your device from obtaining a valid IP Address for your network. The resolution is relatively simple; may only need to temporarily disable or remove the Security App and/or VPN.

DHCP is frequently used to automatically obtain an IP Address from your WiFi Router. Until your iPad has a valid IP Address to connect to your network, you will not have an internet connection. Disabling or removing VPN and/or the offending security App should allow DHCP to operate normally - allowing connection to your network and the internet.

If this resolves your issue, the VPN and/or security App can be reinstated after the connectivity problem has been resolved.

You may need to seek assistance directly from Apple Support. The Get Support link is at top-right of this page.

An Offending security app could be something like Norton, and anti-virus app or the like. That is what that means.

Hum…. My iPad says no VPN, so how would I find ‘offending security App’

I have reset network settings, shut down, iPad & it still will not connect to my WiFi. Phone is connected & TV is connected…???? I can see it if

Are you trying to join a wi-fi network? Are you seeing any more errors? Is this your wi-fi network, or something else?

Thank you, then follow the information that LotusPilot provided.