The Wifi network "" Could Not Be Joined

Interesting. I have three minis, one MBP in the office running Mavericks. The MBP can connect to the 330 just fine. The minis give this same error message. Then one day, ONE mavericks mini could connect. I didn't do anything to it. The other two still give the same cannot connect error. Completely baffled.

Found this thread - hits the nail on the head for me. New Macbook Pro purchased last week, I can connect to a variety of networks but have encountered problems with the D Link DIR-330. I am an IT guy and have access to the DIR-330 management console. Router firmware is last updated in 2008, but upgrade attemps (despite a 2013 release) repeatedly fail.

I am thinking I am going to add a downstream Wireless network - served from a Linksys product - to solve. Or maybe I will try the firmware update via another browser, just in Chrome is getting in the way.

I'm having the same issue. I have a 13 macbook retina from early 2014. There's been no problem joining our zyxel router for 5 months. But recently, once in a while, it decides that it "could not" join the network. I've tried the things that are mentioned in this thread. Just as the problem begins without any apparant reason, it seems to resolve itself not because of anything I do, but for no specific reason at all that I can tell. Very annoying. Did anyone find a solution yet?

I am having the same problem.

Yesterday I upgraded from El Capitan to macOS sierra.

When I'm trying to connect to my home router it shows me "The wifi network could not be joined" but when I go to my college and try to connect to wifi it gets connected and also working fine too. so why this is so? I mean why it gets connected to my college wifi and not to my home wifi.

My Home router is Netgear Genie and I set Channel to Auto.

I am new to mac and just switched from PC to MAC, knows little bit about mac.

Thank you in advance.

Same issue here:

# --- Connectivity

11/04/16 21:39:57.6160 Wi-Fi On . . . YES

11/04/16 21:39:57.6180 Wi-Fi Associated . . . NO

# --- Wi-Fi Interface

Interface Name : en2

MAC Address : 00:26:08:fe:45:ab

Network Name : (null)

Active PHY Mode : None

Security : (null)

SSID : (null)

BSSID : (null)

Country : CH

RSSI : 0 dBm

Noise : 0 dBm

Rate : 0 Mbps

Channel : 1

Channel Width : 20MHz

# --- Bluetooth

Power State : On

Device Information : computer’s Trackpad [d8-a2-5e-f7-38-2e, Apple (0x3, 0x31C), Trackpad]

Link Information : -55 dBm RSSI, AFH Map FFFFFFFFFFFFFFFFFF7F, Master, 11.25 ms interval, Sniff Mode

Total Connected Devices : 1

Total Paired Devices : 3

# --- Wireless Environment

2.4 GHz Networks : 2

5 GHz Networks : 0

Current Channel Networks : 2

Recommended 2.4GHz Channels : [ 2 3 4 5 6 7 8 9 10 11 12 13 ] 1

Recommended 5GHz Channels : [ 36 40 44 48 ]

# --- Network Configuration

Primary IPv4 Interface : en4

IPv4 Address : 192.168.42.20

IPv4 Router : 192.168.42.129

Primary IPv6 Interface : None

IPv6 Address : None

IPv6 Router : None

DNS Servers : 192.168.42.129

Internet Reachable : Yes

# --- Debug

11/04/16 21:39:59.5970 SMTP port is blocked

11/04/16 21:39:59.5980 Dual-homed IPv4 configuration detected (wifi=en2, ipv4=en4)

# --- Test Cases

11/04/16 21:39:59.6110 Conflicting Country Codes . . . PASS

11/04/16 21:39:59.6210 Conflicting Security Types . . . PASS

11/04/16 21:39:59.6220 Crowded Wi-Fi Channel . . . PASS

11/04/16 21:39:59.6230 Wi-Fi interface en2 is not the primary IPv4 network interface.

11/04/16 21:39:59.6230 Wi-Fi interface is off, will not run configuration tests

# --- Description

# --- Router Information

Tried different Mac OS, different routers, etc. Managed to connect via LAN but it's not convenient.

This was useful for me as. Thanks

thank you, this worked at my university too.

Yes it really helped me too. A dialog was shown "Network change detected" and from that moment everything works.