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My MacBook Air says the WiFi has weak security with WPA, but the router is set to WPA2 and my other MacBook Pro doesn't show the same error. This MacBook Air also has slow WiFi compared to the other MacBook and my iPhone. Is there a way to delete and reinstall the wifi service or otherwise refresh the wifi setup on the MacBook Air?
MacBook Air
I'm glad that worked for you. Unfortunately, it's not working for me. I've checked everything three times: my router is using WPA2 Personal (AES) -- I've verified this for both 2.4 and 5. I've deleted / forgotten the network on my macBook and then rejoined, and it even says something to the effect of "This network uses WPA2 (etc) please log in." When I go to the network settings and click on advanced, it verifies that my network uses WPA2. And yet I'm still getting this warning. Is it just an OS glitch, or is there something else I can try?
I'm glad that worked for you. Unfortunately, it's not working for me. I've checked everything three times: my router is using WPA2 Personal (AES) -- I've verified this for both 2.4 and 5. I've deleted / forgotten the network on my macBook and then rejoined, and it even says something to the effect of "This network uses WPA2 (etc) please log in." When I go to the network settings and click on advanced, it verifies that my network uses WPA2. And yet I'm still getting this warning. Is it just an OS glitch, or is there something else I can try?
This was the solution. I deleted and added the network again and the message went away. It was showing up for the 2.4 GHz network and not when on the 5 GHz network. I didn't think that network could have been in the list for that long, but the MacBook Air is almost ten years old! My wife still loves it.
Apple menu -> system preferences -> network -> WiFi -> Advanced lets you add/remove WiFi networks manually.
Use the minus sign after selecting the insecure network and then reconnect to it, using the Airport menu to connect to Other...
Then you can specify which method of encryption you are connecting and the network name.
Newer routers have separate WiFi settings for 2.4 Ghz and 5 Ghz. One or the other may still be set to WEP or WPA.
I'm told that 2.4 Ghz works better for longer range networks that 5 Ghz by my Time Warner/Spectrum cable. As most of my computer equipment is 2 floors up, my dropped connections improved once I chose the lower frequency. In the end the router was actually busted. But it did show a facet I wasn't aware of.
WiFi shows weak security with WP, but my network is WPA2
