F5F Stay Refreshed Power Users Networks The MacBook Air 2019 occasionally fails to connect to Wi-Fi on certain networks.

The MacBook Air 2019 occasionally fails to connect to Wi-Fi on certain networks.

The MacBook Air 2019 occasionally fails to connect to Wi-Fi on certain networks.

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AstroZone
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136
03-10-2019, 01:06 PM
#1
The situation is clear from the start. My MacBook Air 2019 isn’t connecting to any of my Wi-Fi routers. The "wifi diagnostics" option is gone from System Preferences now. Switching to another router fixes it, but when I switch back, it shows "no ip." Sometimes it works, sometimes it doesn’t. It crashes unpredictably, and occasionally it stops altogether. My dad’s Mac Pro (with a cheese-grater, no date) also has issues. Oddly enough, my MacBook Air 2014, iPhone, and Samsung J3 V all function normally. Could this be an OS issue, or is it a firmware problem? I suspect one of them, since the last week or two everything was fine. No new devices have joined the network recently, so it’s unlikely an IP conflict. Thanks for your help!
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A
AstroZone
03-10-2019, 01:06 PM #1

The situation is clear from the start. My MacBook Air 2019 isn’t connecting to any of my Wi-Fi routers. The "wifi diagnostics" option is gone from System Preferences now. Switching to another router fixes it, but when I switch back, it shows "no ip." Sometimes it works, sometimes it doesn’t. It crashes unpredictably, and occasionally it stops altogether. My dad’s Mac Pro (with a cheese-grater, no date) also has issues. Oddly enough, my MacBook Air 2014, iPhone, and Samsung J3 V all function normally. Could this be an OS issue, or is it a firmware problem? I suspect one of them, since the last week or two everything was fine. No new devices have joined the network recently, so it’s unlikely an IP conflict. Thanks for your help!

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heroboy17
Senior Member
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528
03-10-2019, 01:26 PM
#2
Press the option key while clicking the Wi-Fi icon in the menu bar to view "Create Diagnostic Report…" and "Open Wireless Diagnostics…". Limited options available. Best of luck. -kp
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heroboy17
03-10-2019, 01:26 PM #2

Press the option key while clicking the Wi-Fi icon in the menu bar to view "Create Diagnostic Report…" and "Open Wireless Diagnostics…". Limited options available. Best of luck. -kp

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IronStoat
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137
03-11-2019, 01:35 AM
#3
Do you have the ability to check the router and identify the Wi-Fi channel being used? You might want to switch the channel to 7 or 9 for a 2.4GHz network, or 112 if it's a 5GHz setup.
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IronStoat
03-11-2019, 01:35 AM #3

Do you have the ability to check the router and identify the Wi-Fi channel being used? You might want to switch the channel to 7 or 9 for a 2.4GHz network, or 112 if it's a 5GHz setup.

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dog_19
Junior Member
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1
03-11-2019, 03:28 AM
#4
Hi, thank you for your message. Yes, a restart might help resolve the issue.
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dog_19
03-11-2019, 03:28 AM #4

Hi, thank you for your message. Yes, a restart might help resolve the issue.

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Link999123
Junior Member
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45
03-14-2019, 07:18 AM
#5
Yes, but if this continues, the router might be faulty. Always connect to the router using an Ethernet cable to prevent Wi-Fi issues.
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Link999123
03-14-2019, 07:18 AM #5

Yes, but if this continues, the router might be faulty. Always connect to the router using an Ethernet cable to prevent Wi-Fi issues.

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egget02
Junior Member
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22
03-14-2019, 01:35 PM
#6
I'll do that when I get home.
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egget02
03-14-2019, 01:35 PM #6

I'll do that when I get home.

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fishy37
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131
03-15-2019, 07:39 AM
#7
Avoid that completely. Stick to 2.4Ghz only because it's the standard setup in the US and it affects many devices worldwide. Using anything else increases interference since overlapping channels like 7 and 6 cause networks to collide, leading to dropped packets. You're essentially wasting most of the available spectrum. This issue often appears on outdated routers that can't choose smart channels, or due to poor advice from inexperienced sources.
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F
fishy37
03-15-2019, 07:39 AM #7

Avoid that completely. Stick to 2.4Ghz only because it's the standard setup in the US and it affects many devices worldwide. Using anything else increases interference since overlapping channels like 7 and 6 cause networks to collide, leading to dropped packets. You're essentially wasting most of the available spectrum. This issue often appears on outdated routers that can't choose smart channels, or due to poor advice from inexperienced sources.

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