Macbook Connectivity Issues -- Ongoing

I have had problems with my girlfriends Macbook since she bought it. It connects to my wireless network (which has two other computers on it, one of them being my Powerbook G4, it also has an airport express connected). My Powerbook G4 has never had an issue, it can connect to all websites, it can connect and play music through the airport express and it can connect to other computers on the same network. Her Macbook connects to the router, can access most internet sites, it cannot connect to the airport express (it never has) it just attempts to connect but never does, also it can not connect to any other computer on the network. HOWEVER, everything works as it should (including the airport express) when I connect her computer to the router via an ethernet cable.. It has been to the apple store once already for this issue, they replaced the airport card. But it never fixed anything. In the past few days it will no longer to connect to most internet sites, including apple.com. It does connect to google.com and many others, but for some reason some of her more commonly used sites no longer respond. I can try it on her computer and get "Connection Timed Out", walk over to my Powerbook and connect to the site just fine. Both her Macbook and my Powerbook are running 10.5.6, both are fully updated. I would appreciate anyones help with this, I know what I am doing, have done everything I can think of to this computer to get it to work (including reinstalls, changing router settings, everything..).
EDIT
forgot to mention this problem also occurs on other wireless networks, not just mine. So I know its not my network/router.
Message was edited by: Semidios

I have this problem sometimes. Usually I try some combination of restarting the computer and/or restarting the wireless router. One time I had to do a hard reset of the router to make it work.

Similar Messages

MacBook wireless issue (ongoing) & DIY airport card replacement

Hello,
With reference to the ongoing MacBook/OSX (10.5.3) Leopard intermittent wireless issues discussed in this forum has anybody gone ahead and taken matters into their own hands and purchased and installed a new Airport card for their MacBook from www.ifixit.com?
Further details at: http://www.ifixit.com/MacBook-Parts/MacBook-Core-2-Duo-Santa-Rosa-Penryn-802-11n -Airport-Extreme-Card/IF186-062
If so, did it resolve your intermittent Airport issues?
It seems to me that when the MacBook is running on battery power only the Airport card does not realise that the MacBook has come out of sleep sometimes and therefore does not always function correctly. Maybe the Airport card does not receive sufficient power when the MacBook comes out of sleep mode whilst running on batteries only?
Typically when I run the MacBook connected to power the intermittent wireless problem does not occur.
This issue has been a recurring problem for me for 6 months now and unfortunately I have not seen Apple address this issue.
My MacBook is 6-months old and is a black MacBook using a 2.2GHz processor running Leopard OSX 10.5.3.
Cheers,
treaders

Visit Apple Store and replaced the Airport card.

Loss of connection issues ongoing

Hi all
I'd like to start by saying I've had this issue for many months now and I guess this is my last try at getting a fix.
I'm using Verizon dsl connected through a wired westell 6100g modem.
I'm using Windows 7 home
Here is my problem.At random times when I'm browsing the internet my browser(firefox) will stop working,If I'm able to hit refresh I get the "loss of connection webpage" My modem does not show any signs of disconnection (no red lights no blinking) The internet icon on the windows taskbar says I am connected to the internet and if i click to troubleshoot the connection it finds no errors. But I cannot access the internet from any browser I have..
I had this very same issue when I was using Vista And after wasting money on 3 new modems Verizon told me that installing Windows 7 would fix my problem.Which wasn't true.
The only way for me to get back on line is to restart my computer,not my modem.
I've had many tests on my line.I've had dell go into my computer remotely to try to see if it's a internal issue Nobody can find anything wrong..At least I hope they are telling the truth.
I disabled ip6,firewall,I tried 3 different modem,cat5 cables,filters..I checked to make sure my ip addy match,flushed the dns..I
I've tried every suggestion that i've been given and nothing works,The last thing I was told was Westell 6001g are NOT vista and windows 7 compatable...I have no idea if thats correct.I've wasted far too much time and money the past months on this issue.I'm just about ready to face the fact that I'm going to be restarting my pc half the time I'm using it.
Does anyone have any idea or have the same issue? And if it is the modem..Can anyone suggest a wired one that would work?
Oh btw when this does happen I CAN use cmd and ping a website..with no packet loss

My ip from the website matches the one shown on the modem page but not the one shown in the cmd.
i noticed i have 00-00-00-00-00-00-00-E0 as a physical address not sure if that is a problem or not.I don't see where it says what firmware i have tho.
Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Windows\system32>ipconfig/all
Windows IP Configuration
   Host Name . . . . . . . . . . . . : April-PC
   Primary Dns Suffix . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : westell.com
Ethernet adapter Local Area Connection:
   Connection-specific DNS Suffix . : westell.com
   Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
   Physical Address. . . . . . . . . : 00-24-E8-20-32-5A
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : xxxxxxxxxxxxxxx(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Monday, January 04, 2010 12:28:12 AM
   Lease Expires . . . . . . . . . . : Tuesday, January 05, 2010 12:28:11 AM
   Default Gateway . . . . . . . . . : 192.168.1.1
   DHCP Server . . . . . . . . . . . : 192.168.1.1
   DNS Servers . . . . . . . . . . . : 192.168.1.1
   NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter isatap.westell.com:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . : westell.com
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 11:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::840:3314:b7be:3c6a%12(Preferred)
   Default Gateway . . . . . . . . . :
   DHCPv6 IAID . . . . . . . . . . . : 301989888
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-C6-D0-7D-00-24-E8-20-32-5A
   NetBIOS over Tcpip. . . . . . . . : Disabled

Macbook air Mini DisplayPort to VGA Adapter connectivity issues

Hi pple,
Would like to ask if anyone is facing connectivity issues with Mini DisplayPort to VGA?
I am currently using the 2nd Gen Macbook Air with Intel HD Graphics 3000 384 MB. Sometimes when I connect to a montior (Viewsonic VA1918wm) it works fine, sometimes it just does not work and the laptop just shows me a blue screen.
I tried with out with my friend's Mini DisplayPort to VGA adapter, it has the same problem. Does this means that my macbook air mini disoaly port got a problem?
Thanks
Bryan

I am experiencing the same kind of problem... only with projectors. Some projectors will display the screen and then others wont even register with the MacBook Air.
Using an Apple Min Displayport to VGA adapter. It's hit or miss if it works. Firmware has been updated on the adapter but this did not help.
Anyone help with this?
Thanks,
Nathan.

My MacBook Air has recently started having substantial WiFi connectivity issues. How do I fix this?

For the last couple weeks my MacBook Air has started having some mighty substantial connectivity issues.
When I wake it from sleep, or if I'm using it for an extended period (say, more than 5-10 minutes), the connection will become extremely unreliable. This primarily happens with browsers, or the Twitter application. For example, if I start a call on Skype the call will continue to function just fine, but I won't be able to connect to any websites through any browser. I've tried Safari, Chrome, and Firefox while the connectivity problems are occuring. When they do occur, a full shut down and cold boot are required to make it work again for a short while.
Does anyone know what might be causing this? I've done numerous checks for malware using Clam Xav and Sophos Anti-Virus. (I didn't suspect that this would be the issue, but it was still something that I decided to rule out.) Additionally, I've tried connecting using both the 2.4GHz and 5GHz bands on my wireless router. Neither seems to be more successful than the other. (Note: The 5GHz works perfectly and without interruption on my iPad and desktop PC. The 2.4GHz works perfectly with my iPhone 4S and Xbox 360. I feel that with that in mind, I can safely rule out the router as the root of the problem. Both of these examples go on for very extended periods of time. I game regularly using both my PC and Xbox 360.)

Hi Jollified,
Does your sound work when you try to use head/earphones? If so, try the following:
Plug your Headphones into your Mac.
Play a sound through them (a song for example), then stop the sound.
Make sure 'Preferences' is isn't open. If it is, Quit.
Launch System Preferences > Sounds.
While the Sounds tab is open and set to 'Headphones', pull out the Headphones from the jack.
You should see your Mac reset to 'Internal Speakers'
Also, I see you have tried resetting the PRAM, have you tried resetting the System Management Controller (SMC)? Resetting the System Management Controller (SMC) on your Mac - Apple Support
As for your MacBook not sleeping when you close the lid, there are many reasons this can occur.
First of all, check out Apples article on the issue: OS X Yosemite: If your Mac won’t go to or stay in sleep If you find these steps don't help, try a few of the following:
A common cause for the Mac not sleeping is your printer. If there are queued jobs waiting to be printed, but your printer is switched off, for some reason you Mac just wont like it and simply will not go to sleep. System Preferences > Print and Scan > Open Print Queue
Do you have an Ethernet Cable connected? People have reported in the past that removing their Ethernet allowed their Mac to sleep. This goes for other things you may have connected directly to your Mac also.
Try heading into your Mac Preferences > Sharing and deselecting 'Internet Sharing' as well as 'Printer Sharing'.
Also deselect Wake For Network Access by heading to System Preferences > Energy Saver > Power Adapter > Wake For Network Access.
Energy Saver > Schedule > Startup or Wake - Uncheck.
Alternatively, set your system preferences to Never Sleep, and put into Sleep manually: System Preferences > Energy Saver > Computer Sleep > Never.
Good luck!

I have Snow Leopard 10.6.8 on my MacBook. Constantly dropping internet connection or message "error connecting to the network" comes up. No wireless connectivity issues with windows 7 laptop or iphone.

I have a MacBook with Snow Leopard 10.6.8. The last few weeks it has been constantly dropping internet connection, and one of these messages appear on the page: "Safari cannot open this page because the server where this page is located isn't responding" or "Safari cannot open this page because you are not connected to the internet" comes up. I will check Wifi and I am connected. No wifi connectivity issues with iphone or windows 7 laptop, this doesn't happen with either of those devices. I have unplugged and reset router, cleared cache, still happening. Any ideas? Thanks in advance.

Hi BCLor!
Try using the suggested steps in the following article to help you troubleshoot this issue with your Wi-Fi connection:
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT4628
Thanks for being a part of the Apple Support Communities!
Regards,
Braden

Jaybird headphones and Macbook Pro Retina bluetooth connectivity issues

I recently purchased the Jaybird Bluebuds X Premium headphones and for awhile it would connect to my new Macbook Pro Retina 15'' via bluetooth, but now it doesn't anymore. The headphones connect just fine to my phone (iPhone 4S), and other Macbook Pros (not retina), but they do not connect to other Macbook Pro Retinas. I was wondering if this was a connectivity issue with Macbook Pro Retinas and if so how can I get around it to connect the headphones again?
Thanks

Hey there LongHorn16,
It sounds like your Bluetooth headphones aren't working with this one computer, but there is no issue with other devices that you have. I would start with these 2 steps from the following article:
Restart your computer
Sometimes a simple restart of your Mac is all it takes to get things running smoothly again. You may also want to try resetting your computer's PRAM and NVRAM.
Reset your Bluetooth device
Try turning your device off and then on again. If that doesn't resolve the issue, see if you can reset your device—refer to the documentation that came with your device for instructions.
Bluetooth Quick Assist
http://support.apple.com/kb/HT1153
If it still doesn't work, then I would next use this article to remove the device:
Bluetooth: How to Delete a Paired Device
http://support.apple.com/kb/TA27116
Then restart your computer and pair it again:
OS X Lion: Set up a Bluetooth device
http://support.apple.com/kb/PH3647
Thank you for using Apple Support Communities.
Cheers,
Sterling

Macbook Fios Wireless Connection Issues

Hi everyone. All of a sudden today my Macbook is having issues connecting to my Verizon Fios Wireless Internet. I was just wondering if anyone else has had this problem or is aware of any problems with compatibility or something. Any tips or advice? Thanks!

Finally got an answer! Thanks to all the folks I talked to, one of them taught me a little trick that I wanted to share. What worked was renaming the router, then making the macbook connect to it as if it was a new network - it connected and stayed online. Then renaming the router back and connecting to it again as it were a new network and it connected and has stayed connected. Hope this works for anyone else having this issue!

I have a Blackberry 8330 and a MacBook. For some reason I started having connectivity issues. The handheld will not sync with the computer via pocketmac. I have uninstalled, etc 15 times. Please help

I have a Blackberry 8330 and a MacBook. For some reason I started having connectivity issues. The handheld will not sync with the computer via pocketmac. I have uninstalled, etc 15 times. Please help

Hi Peter!
I'm sorry to read that you are having issues with your Sync account.
Your best bet is to follow the steps described in this blogposts and open a bug:
https://philikon.wordpress.com/2011/06/13/how-to-file-a-good-sync-bug/
After that, if you don't want to user Sync in your computer, you can stop it with this simple steps:
* At the top of the Firefox window, click on the Firefox button (Tools menu in Windows XP) and then click Options.
* Once the options window opens, click on the Sync tab.
* At the bottom of the Sync tab click on '''Deactivate this Device''' link

Bluetooth connection issues - Macbook Pro

My apologies if my question has already been answered, but I have done more searches then I can count and I still cannot locate any answers.
I just purchased a MacBook Pro (running the lastest updates). I have a TREO PRO Smartphone running Windows Mobile 6.1. I can pair the MacBook and TREO via bluetooth. What I can't seem to do is connect the two to use any of the bluetooth functions (send files, browse device) or sync files between the two (I've installed Missing Sync for Windows Mobile to perform the syncing functions). In Missing Sync, the Bluetooth Icon is grayed out (Missing Sync doesn't see the TREO and MacBook connected via bluetooth).
What am I doing wrong?? I feel like I am missing a major step after the pairing process has completed. I deleted and re-paired the devices multiple times - still no bluetooth connections.
I can activate Internet Sharing on the TREO and connect the MacBook and Treo via "connect to network", but then I still can't sync, send files or browse device.
In case you are curious, PALM support said it's a Windows Mobile issue, Microsoft says it's an Apple issue, and the Genius Bar says they can only help with bluetoothing on an iPhone.
Thanks to anyone who can help.

I'm exactly on the same issue. Have you found a solution ?

Two Macbooks, same spec, yet one has major connectivity issues

Hi,
I have two (old - 2006) macbooks, bought at exactly the same time, exactly the same spec, probably off the same factory line. Yet one has serious Airport issues which are proving very difficult.
It will pick up a maximum of one wireless network, which it barely is able to connect to. There are 3 wireless networks in this house yet it only picks up the nearest one. The other macbook can pick up at least 15 other networks despite being exactly the same spec and on the desk next to it.
Even when it connects to my network, connections are frequently dropped - over 50% packet loss generally.
Both are running the same OS and are exactly the same spec. I have tried resetting the PRAM, deleting the airport prefs, resetting the SMC; you name it I've tried it. I noticed that this is quite a common issue with Snow Leopard + Airport, but I am now thinking it could be a faulty Airport card. Could this be the case?

You already mentioned that you thought that "it could be a faulty AirPort card". I agreed and offered another possibility as well.
Whether or not you are using Snow Leopard, if you have a faulty wireless card or a faulty antenna connector, you will most certainly have major connectivity issues.
You've already performed all the standard troubleshooting steps and mentioned that you felt it may be a hardware issue.
If you have changed your mind and feel that it's a Snow Leopard issue, (logic would dictate that it would have also affected your other identical computer the same way) you have the option of reinstalling the operating system to see if that might help.

MacBook WIFI issue. States full signal but won't connect!

Hey all,
I'm at the end of my tether here! I brought my MacBook back in Feb and loved it, was so pleased with it. A couple of months later the screen broke, so it was taken back to Comet who sent it away and repaired it, turns out the screen was faulty and there was also a "defective logic board". Got it back after 3 weeks and all was fine, until now!
When i purchased the MacBook i needed to buy a new router so i got an N router which has always worked perfectly, over the last week or 2 i found the connection kept dropping out, this happened before and it was VirginMedias problem which they fixed. I checked with them and there's no fault, checked the router and there's no fault and no settings changed, i then decided to try a neighbours WIFI, again, the MacBook connected and stated full signal but when i opened Safari it says i wasn't connected. The problem got worse and worse and i'm now at the point where i cannot connect to any network through WIFI at all, the only way i can get internet is if i use my Vodafone WIFI Dongle...which isn't the cheapest or easiest way of connecting to the net! I also have an iPhone 4 and a iPod Touch and they both still connect to the WIFI without any problems.
If anyone can help i would appreciate it so much! If i take the MacBook back to Comet they'll only want to send it away again and i'm not happy to do that, 1) Because i'll be without it for at least 3 weeks and i need it for work and 2) Since i got it back from the last repair i've discovered it wasn't put back together very well and the screws have been falling out of the base ever since.

Since you cannot connect, even at at another location, I'd agree that it seems to be a hardware problem, rather than ISP or software settings.
If purchased new or refurb direct from Apple, your MacBook came with a 1-year warranty, so you should be well within the initial warranty period.
If you're not happy with the service you're getting from Comet, escalate! Ask for the manager, and keep going up the chain until you get some satisfaction.
Finally, if Comet can't meet your needs, try another Apple authorized repair center or an Apple Store.

IPad2, Verizon 3G, VPN Connectivity Issues

Greetings all. I am the systems administrator for my corporation and have seen an issue that I wish to present to the community for discussion.
For those enterprise users that have an iPad2 with Verizons 3G, are you experiencing connectivity issues while trying to connect to your VPNs from the 3G network? If so, have you found any work around to allow connectivity or does it work fine for you?
Here's a summary of my issues:
We have a VPN server built on Debian Linux that has been in operation for over four years. It handles remote VPN connections from Windows, Linux, Android, OS X, iOS, and from many different devices including multiple flavors of Apple products (iMacs, Minis, MacBooks, iPads, etc.). To date, it has performed flawlessly with assorted devices connecting to it through broadband and assorted 3G networks.
Recently I purchased an iPad2 with Verizon 3G. I was able to set up the VPN connection using PPTP and connect using a Wi-Fi connection. When I turned off the Wi-Fi and attempted the same connection via Verizon 3G, it fails. I then took an associates iPad1 using AT&T 3G, set up the same connection, and was able to connect. I don't have access to an iPad2 on AT&T 3G so, I can't speak for that.
Here's the logs from the VPN server while connecting from my iPad2:
Wi-Fi
Jul 27 05:20:43 localhost pppd[31694]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Jul 27 05:20:43 localhost pppd[31694]: pptpd-logwtmp: $Version$
Jul 27 05:20:43 localhost pppd[31694]: pppd 2.4.4 started by root, uid 0
Jul 27 05:20:43 localhost pppd[31694]: Using interface ppp2
Jul 27 05:20:43 localhost pppd[31694]: Connect: ppp2 <--> /dev/pts/4
Jul 27 05:20:46 localhost pppd[31694]: Unsupported protocol 'IPv6 Control Protocol' (0x8057) received
Jul 27 05:20:46 localhost pppd[31694]: found interface eth1 for proxy arp
Jul 27 05:20:46 localhost pppd[31694]: local IP address 192.168.1.69
Jul 27 05:20:46 localhost pppd[31694]: remote IP address 192.168.1.82
Jul 27 05:20:46 localhost pppd[31694]: pptpd-logwtmp.so ip-up ppp2 scott XXX.XXX.XXX.XXX (removed external IP for security reasons)
Quick connect, able to utilize VPN connection normally. No issues.
Verizon 3G
Jul 27 05:20:29 localhost pppd[31682]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Jul 27 05:20:29 localhost pppd[31682]: pptpd-logwtmp: $Version$
Jul 27 05:20:29 localhost pppd[31682]: pppd 2.4.4 started by root, uid 0
Jul 27 05:20:29 localhost pppd[31682]: Using interface ppp2
Jul 27 05:20:29 localhost pppd[31682]: Connect: ppp2 <--> /dev/pts/4
Jul 27 05:20:32 localhost pppd[31682]: peer refused to authenticate: terminating link
Jul 27 05:20:33 localhost pppd[31682]: Connection terminated.
Jul 27 05:20:33 localhost pppd[31682]: Exit.
As you can see, the peer refuses to authenticate causing the link to be terminated while attempting to connect using Verizons network. This is with the same VPN connection settings on the iPad2 that just worked with WiFi connection from the same device.
Here's what I can verify with regards to 3G networks:
Older (<4) iPhones and iPad1 using AT&T can connect
Windows and OS X based laptops using Sprint 3G can connect
Android based smart phones using Sprint 3G can connect
I have not called Verizon or Apple Support yet but, that's next when I have the time. My initial conclusion is that there is something with Verizons 3G services that is causing the issue. It may be that Verizon is using some sort of data compression process that is problematic with VPN transmission. While the log shows an unsupported IPv6 protocol when connecting via Wi-Fi, it still negotiates a successful connection and I don't think that's the root cause for the disconnect. Thoughts?

Hi Alexander,
I am running in to the exact same issue (although not with Linux). Did you ever find a fix for this? I have some support tickets open with my VAR's, but found your post and thought I would check. If I find anything I will post.
Thanks
Stu

Ethernet connectivity issue with Microsoft Small Business Server (SBS)

Just recently updated my OS to Yosemite, and am now having ongoing problems connecting to my company's Microsoft Small Business Server (SBS).
I'm having no other issues connecting to outside server's via wifi or ethernet, but once I connect to our local business server I lose internet connection and also my email account goes offline (Microsoft Outlook 2011). Sometimes the connection will intermittently return, but will be very slow and won't load images. I had no connection issue's before the update.
Anyone experienced a similar problem?

"That depends on what what resources you use the server for."
- I will be using the printer for print sharing and file sharing. There is an estimating application I will load on a Mac Mini and will want to share that to other desktops.

Wi-Fi Connection Issue at Startup When NAS configured as Login Item

Hi!
I recently ran into internet connection issue during startup. I managed to find the culprit (it's the firewall) but I believe there should be more behind just blaming the firewall for it.
Before I go any further, it would be best if I try to explain the setup that I have. Also, note that I'm a newbie when it comes to terms like DHCP, IP address, IPv4, IPv6, etc. I think I may have an idea what they do, but I'm not quite sure whether that idea jibes with the real thing. Whatever. Anyways, here's the setup.
For the internet connection at my place, I use a Cisco wifi router and an Airport Extreme Base Station. The Cisco router has been set up to have its own wi-fi network, while the Airport Extreme Base Station is connected to the Cisco router using ethernet. I set up a separate wi-fi network for the Airport Extreme Base Station and almost all of my devices are connected using the Airport Extreme's wi-fi network.
I have 3 external hard drives connected to a USB hub, which in turn is connected to the Airport Extreme base station.
2 Macbooks. One is a white, late 2007 MacBook running Lion. The other is a MacBook Pro running Mountain Lion. I turned the firewall on for both Macbooks.
Initially, there was no problem connecting to the internet and also the 3 external hard drives from the Airport Extreme. I did the wireless connecting to the external hard drives manually after startup (open finder > navigate to airport extreme at the sidebar > click on the hard drives one by one until the eject icon and folders are shown). You can imagine how soon this got annoying for me (yeah, I shutdown my macbooks everytime I finish with them, it's a habit). So I put these external hard drives as a login item at startup (in the system preference setting for accounts) so that I won't have to do this everytime I start my macbooks.
This is where it got interesting.
For my MBPro, during startup the wi-fi icon at the menu bar will show that it was trying to connect and then the '!' symbol is shown. When I go to system preference > network, there was a message about self-assigned IP. I notice that it starts with 169, which is not the usual IP assigned to devices in my home network. This, however, usually did not last long. Soon enough the '!' symbol is gone and the wi-fi connection becomes normal with finder windows popping up showing folders for the external drives. It's a minor annoyance, waiting for the '!' symbol to go away (I think it got something to do with DHCP settings sent from the router and the self-assigned IP address, but again I'm not sure), but at least the MBPro can connect in the end.
For my white MB though, things didn't go well. The '!' remains in the wi-fi icon and there was no internet connection, no matter how long I waited. Even after removing the external drives from login items the problem persists during startup. If I remember correctly sometimes there is a pop-up saying that the computer could not connect to the airport extreme server (this also happens on the MBPro).
I initially tried resetting the wi-fi setup (removing the network from the list of known network in system preference > network, removing the wi-fi network password from keychain access) to no avail (in both macbooks). As mentioned above, I also tried to remove the network hard drives from login item but even after that the connection problem persisted in my white Macbook, while the MBPro initially showed the same symptom before finally managing to connect with the proper IP address.
Finally, after googling through forums some people suggested that turning off the firewall might work. I did so, and voila, it did remedy the situation. Both Macbooks manage to connect to the internet during startup without any fuss, and both even manage to connect to the network drives during startup (I put them in again as login items to see if it would cause further trouble).
So, the firewall was the culprit. But it only started acting up AFTER I put the network drives as login items.
Can anyone explain the cause of this?
Anyways, thanks for reading!

Make sure you are using the passkey found on the Homehub and not your email password. You may need to "Forget" the connection on the phone and scan again then enter passkey.

Macbook Connectivity Issues -- Ongoing

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