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Level 1

6 points

Can't connect to wi-fi after switching from Windows 8.1 (bootcamp) to OSX Yosemite

Hi.

I recently installed Windows 8.1 (core N) through bootcamp. Everything is working absolutely fine, but whenever I switch from windows to OSX (through bootcamp restart menu on windows or through the simples shut down) I never EVER can connect to my home wifi without restarting the router again.
I have to restart it every single time. Last night I used windows, turned the computer off and this morning started using OSX and had to restart de router again.

I tried restart OSX, shut down the computer, but nothing works, I always need to restart my router.

MacBook Pro (Retina, 13-inch, Mid 2014), OS X Yosemite (10.10.3), Wi-Fi Problems

Posted on May 24, 2015 6:50 AM

40 replies

Nirvanes Author

Level 1

6 points

May 30, 2015 11:05 AM in response to Loner T

I have some of the reported problems with wifi in Yosemite, normally by closing the mac and opening sometime after I have my wifi with that exclamation mark. This is easily solved by turning off the wifi and turning it on again.

But this specific problem happens only while switching from windows to OSX. Happened again some hours ago. Played a game in steam for an hour or so, turned it off, navigated in facebook with internet explorer for 5 minutes, and shut the computer down to boot OSX. When OSX booted, I had to restart my router again.

Loner T

Level 9

59,471 points

May 30, 2015 11:21 AM in response to Nirvanes

How comfortable are you using tools like Wireshark or tcpdump? As a test, when you have the problem next time, without rebooting the router, can you

1. if in Windows, run from an Admin CMD window

ipconfig /release

ipconfig /renew

Test.

2. if in OS X, from System Preferences -> Network -> WiFi -> Advanced -> TCP/IP -> Renew DHCP lease

Test.

Nirvanes Author

Level 1

6 points

May 30, 2015 11:33 AM in response to Loner T

Not familiar with any of the tools. But I can try to use them if you are keen to help...

Loner T

Level 9

59,471 points

May 30, 2015 11:56 AM in response to Nirvanes

Try the DHCP IP release/renew and see if that helps, before packet captures are necessary. What is your router/wifi access point model?

Nirvanes Author

Level 1

6 points

May 31, 2015 3:42 PM in response to Loner T

Am I suppose to use it in OSX or Windows?

I live in Portugal, and I have a Zon 2.0 router. For what I could find out it's a Hitron BVW3653 Board v2

Loner T

Level 9

59,471 points

May 31, 2015 3:52 PM in response to Nirvanes

I have steps for both OSes listed.

1. if in Windows, run from an Admin CMD window

ipconfig /release

ipconfig /renew

Test.

2. if in OS X, from System Preferences -> Network -> WiFi -> Advanced -> TCP/IP -> Renew DHCP lease

Test.

Nirvanes Author

Level 1

6 points

May 31, 2015 7:57 PM in response to Loner T

Did what I used to. Windows wifi was working fine, booted OSX and there was the problem. Renewed DHCP in OSX as you said and it didn't work.

Loner T

Level 9

59,471 points

May 31, 2015 8:26 PM in response to Nirvanes

Do you get a valid IP address after the renewal?

Can you reach the gateway? If you can, are you unable to reach the Internet?

Can you resolve names using nslookup or dig commands?

Nirvanes Author

Level 1

6 points

Jun 1, 2015 8:07 AM in response to Loner T

Before

After

Everything is the same.

No, that's the thing, the internet is working fine, my smartphone is always connected and I can use it normally. I'm unable to reach the getaway/router. And only mine. Because I can connect to my neighbours (I don't have the password but I can connect to the router), and they have the exactly same router. As I said before, my router belongs to the FON network, a network of hospots, I don't know if you are familiar... but anyone with a router like mine is a hotspot for me, so I can connect to my neighbours routers with FON, as an hotspot, with no problem. Just not my own router...

How do I do that? Sorry I'm not an expert, I really don't know what you are asking now :/

Loner T

Level 9

59,471 points

Jun 1, 2015 8:36 AM in response to Nirvanes

Start a Terminal window sussing Applications -> Utilities -> Terminal. In the window, type the following commands one line at a time and paste the output as a reply.

ping 192.168.1.1

ping www.google.com

nslookup www.google.com

dig www.google.com

Here is an exampleofthe commands from my Mac.

nslookup www.google.com

Server: 10.71.30.30

Address: 10.71.30.30#53

Non-authoritative answer:

Name: www.google.com

Address: 64.233.168.103

Name: www.google.com

Address: 64.233.168.105

Name: www.google.com

Address: 64.233.168.99

Name: www.google.com

Address: 64.233.168.147

Name: www.google.com

Address: 64.233.168.106

Name: www.google.com

Address: 64.233.168.104

$ ping www.google.com

PING www.google.com (64.233.168.104): 56 data bytes

64 bytes from 64.233.168.104: icmp_seq=0 ttl=40 time=59.456 ms

64 bytes from 64.233.168.104: icmp_seq=1 ttl=40 time=56.813 ms

64 bytes from 64.233.168.104: icmp_seq=2 ttl=40 time=60.031 ms

64 bytes from 64.233.168.104: icmp_seq=3 ttl=40 time=59.786 ms

64 bytes from 64.233.168.104: icmp_seq=4 ttl=40 time=57.344 ms

64 bytes from 64.233.168.104: icmp_seq=5 ttl=40 time=60.736 ms

64 bytes from 64.233.168.104: icmp_seq=6 ttl=40 time=60.010 ms

^C

--- www.google.com ping statistics ---

7 packets transmitted, 7 packets received, 0.0% packet loss

round-trip min/avg/max/stddev = 56.813/59.168/60.736/1.376 ms

$ dig www.google.com

; <<>> DiG 9.8.3-P1 <<>> www.google.com

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23986

;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:

;www.google.com. IN A

;; ANSWER SECTION:

www.google.com. 81 IN A 64.233.168.103

www.google.com. 81 IN A 64.233.168.105

www.google.com. 81 IN A 64.233.168.99

www.google.com. 81 IN A 64.233.168.147

www.google.com. 81 IN A 64.233.168.106

www.google.com. 81 IN A 64.233.168.104

;; Query time: 2 msec

;; SERVER: 10.71.30.30#53(10.71.30.30)

;; WHEN: Mon Jun 1 11:35:49 2015

;; MSG SIZE rcvd: 128

Nirvanes Author

Level 1

6 points

Jun 1, 2015 8:41 AM in response to Loner T

Thanks. Do you want me to do that now or only after using windows and the internet connection isn't working in OSX?

Loner T

Level 9

59,471 points

Jun 1, 2015 9:02 AM in response to Nirvanes

Do it any time Wireless connection does not work in any OS - Windows or OSX.

Nirvanes Author

Level 1

6 points

Jun 1, 2015 9:26 AM in response to Loner T

Last question.

I was testing this, trying to do what you asked now to be certain that I'm doing it right later... you asked to write that, one line at a time, but as soon as I hit enter after writing the ping, this strated and it just doesn't ends. What Am I doing wrong exactly? It looks nothing like your example.

Loner T

Level 9

59,471 points

Jun 1, 2015 9:57 AM in response to Nirvanes

Please type Control+C to stop the ping. You can also use the "-c 5" to iterate only 5 times.

ping -c 5 www.google.com

PING www.google.com (64.233.168.105): 56 data bytes

64 bytes from 64.233.168.105: icmp_seq=0 ttl=40 time=58.923 ms

64 bytes from 64.233.168.105: icmp_seq=1 ttl=40 time=58.894 ms

64 bytes from 64.233.168.105: icmp_seq=2 ttl=40 time=55.969 ms

64 bytes from 64.233.168.105: icmp_seq=3 ttl=40 time=56.131 ms

64 bytes from 64.233.168.105: icmp_seq=4 ttl=40 time=56.039 ms

--- www.google.com ping statistics ---

5 packets transmitted, 5 packets received, 0.0% packet loss

round-trip min/avg/max/stddev = 55.969/57.191/58.923/1.403 ms

Nirvanes Author

Level 1

6 points

Jun 4, 2015 7:35 PM in response to Loner T

Here it is.

Can't connect to wi-fi after switching from Windows 8.1 (bootcamp) to OSX Yosemite