Macbook Pro won't connect to WIFI

Help! My new Macbook Pro won't connect to my home's existing WIFI network. The other computers (PCs) are running on it without a problem but when I try to join the network it rejects my password as being incorrect, though it definitely is the right one!

Check to make sure the Caps Lock is off.
What type of wireless security are you using? If it's WEP Mac's don't do WEP anymore and you will need to change it to WPA or WPA2.

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Macbook Pro won't connect to wifi but other computers are working perfectly

Hi,
I have a 2012 MacBook Pro that connects to WiFi no problem anywhere else - except for my parent's house (who I am currently visiting). There are 2 other PCs in the house that connect to the WiFi without a problem, as does my iPhone. When I try to connect, the Network Setup Assistant keeps saying "Connection Timeout" and then when I go into "Assist Me" the error comes up as "The password you entered is invalid." I know that the password is correct, but I can't get passed this step...tried restarting computer and router but no luck.
Help!!

Click the Advanced button in the Network preference pane, then the TCP/IP tab. Type something (anything, as long as it's unique) in the DHCP Client ID text box. Click OK, then Apply. Reopen the TCP/IP tab and click Renew DHCP lease.

Macbook Pro won't connect to wifi while all other macbooks in house will.

I have a MacBook Pro running 10.6.8 and we got wifi at the house this afternoon. It will not connect, if I open network diagnostics the top four lights are green, internet and server are red. There are two other macbooks in the house(at least one also running 10.6.8) and two ipads, all of which connect with no problem. The macbbok in question connects fine at coffee shops and, up until a week ago, fine with the wifi at my last apartment.
We are using Charter and the router is a Motorola SBG941.
Thanks for any advice you can give!

Change your router channel. Sometimes this is all you will have to do.
Power cycling the router. Read the router's user manual or contact their tech support for instructions.
System Preferences/Internet & Network/Network
Unlock the padlock
Locations: Automatic
Highlight Airport
Click the Assist Me button
In the popup window click the Diagnostic button.
System Preferences/Network- Unlock padlock. Highlight Airport. Network Name-select your name. Click on the Advanced button. Airport/Preferred Networks-delete all that is not your network.
Place a check mark next to "Remember networks this computer has joined." Click the OK button and lock the padlock. Restart your computer.
http://support.apple.com/kb/TS1920 Mac OS: How to release and renew a DHCP lease
No internet connection (wireless)
Check to see if an extra entry is present in the DNS Tab for your wireless connection (System Preferences/Network/Airport/Advanced/DNS).
Delete all extra entries that you find.
Place a check mark next to "Remember networks this computer has joined."
Other resources to check into:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
Netspot
How to diagnose and resolve Wi-Fi slow-downs
Pv6 troubleshooting
Mac OS X 10.6 Help: Solving problems with connecting to the Internet
What Affects Wireless Internet?
Solutions for connecting to the Internet, setting up a small network, and troubleshooting

Macbook Pro won't connect to wifi router

My laptop won't connect to my wifi at home when I go into my room. The wireless router is on the other end of the house and I know you'll probably say it's out of range, but i've been in the same room for 2 years and i've never had problem connecting it until up to a couple of weeks ago. Nothing has changed in the set up of the house, it just randomly stopped connecting. Can anyone suggest what may be wrong??
Thanks.

It could be that one of your neighbors has added a router that's basically overpowering yours. Try logging into the router and changing the wireless channel.

My macbook pro won't connect to wifi

Every other computer in the house connects just fine, but mine won't connect. Airport says I'm connected, I've picked the correct network, can't figure out what is wrong. This has been happening periodically since I started using this network 6 months ago. I never had any problems before that. I can usually connect just fine, but every couple of week it is down for 2-3 days, then it just mysteriously starts working again. I've tried deleting and recreating airport as I've sen suggested elsewhere, but that did nothing. Not sure what to try now.
Thanks for the help.

Restart the router. Wait until all the lights are lit up.
Restart the computer.

MacBook Pro won't connect to WiFi after installing a new modem...

WiFi set up fine on the other Mac in the house (MacBook Air) and on my Android phone (using WPS button on modem). I can find the network in the dropdown, but when I enter the password, it says "invalid"—even though it's correct. In the Network portal, I also get an error message saying that there is "no IP address"? Can't set up on iPad either. All used to connect just fine to the old network, just by entering a password. Any thoughts?

Hmmm...yes, there should be, although resetting the modem isn't hard (unless they mean something along the lines of resetting to factory settings). I wonder, tho, if the modem is old enough that something in your new computer is not communicating with it.
Can you connect with an ethernet cable? That might help you figure out if it really is a problem with your modem. You might also check with your internet service provider. I realize not all of them can deal with Macs, but if you rent the modem, they might be able to get you a newer model and if not, they may be able to make a suggestion.

Brand new MacBook Pro won't connect to WiFi after one day.

I got my MBP replaced by Apple on Sunday. I used it a bit that night, and let migration assistant transfer everything over from by backup drive overnight. I used it for a few more hours the next day, no problems. I brought my computer over to my friend's room (we're in a dorm building) and tried to connect to her WiFi. Whenever I try to connect to a network, there's an "!" over the WiFi bars in the status bar, and in Network Preferences, under WiFi, it say "No IP Address."
I am having the same issue in my Windows partition as well, which leads me to suspect this is a hardware issue. I am still able to view WiFi networks. I just cannot connect. Any suggestions? Thanks.

Hmmm...yes, there should be, although resetting the modem isn't hard (unless they mean something along the lines of resetting to factory settings). I wonder, tho, if the modem is old enough that something in your new computer is not communicating with it.
Can you connect with an ethernet cable? That might help you figure out if it really is a problem with your modem. You might also check with your internet service provider. I realize not all of them can deal with Macs, but if you rent the modem, they might be able to get you a newer model and if not, they may be able to make a suggestion.

My MacBook Pro won't connect to the Internet via wifi but it worked fine on ethernet cord...I tried running diagnostic but it didn't work:(((( it happen every time if I restart the modem and/or router

My MacBook Pro won't connect to the Internet via wifi but it worked fine on ethernet cord...I tried running diagnostic but it didn't work:(((( it happen every time if I restart the modem and/or router.. Any idea how to fix this?

Hello Rattisate,
Sorry to hear you are not able to connect to Wi-Fi on your MacBook Pro. I would be concerned about this too. You can find information on how to troubleshoot this in the following article:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
http://support.apple.com/kb/HT4628
Follow the steps in the section labeled, "Symptom: My Mac does not connect to the Internet."
Thank you for posting in the Apple Support Communities.
Best,
Sheila M.

MacBook Pro won't connect to home wifi, but will connect to other networks

Help! MacBook Pro won't connect to home wifi but will connect to other networks. Others can connect to my home network. I've tried diagnostics, resetting the router, restarting my computer, and forgetting the network and then trying to access it. Nothing works.

Hey Brittany,
Welcome to Apple Support Communities.
It sounds like you’ve done quite a bit of troubleshooting to try and resolve the issue with your MacBook Pro not connecting to your Wi-Fi network. If you haven’t already, take a look at the article linked below which provides some additional troubleshooting suggestions that may help you resolve the issue.
Wi-Fi: How to troubleshoot Wi-Fi connectivity - Apple Support
So long,
-Jason

MacBook Pro won't connect to safari

New MacBook Pro
won't connect to safari. All other devices on the wifi network work fine.

Hi Mcm65,
Sorry to hear you are having issues connecting to the internet with your Macbook Pro.
Try the steps in this article first:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
- Judy

My MacBook Pro won't connect to the Internet, but my phone and PC will.

My MacBook Pro won't connect to the Internet. My iPhone has no problem doing so, and neither does my PC. I think it's something to do with my DNS, but I'm not sure. My network connections say that both my Ethernet or FireWire are failed. What's wrong with my MacBook? Is there a simple way to fix this?

Hello Rattisate,
Sorry to hear you are not able to connect to Wi-Fi on your MacBook Pro. I would be concerned about this too. You can find information on how to troubleshoot this in the following article:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
http://support.apple.com/kb/HT4628
Follow the steps in the section labeled, "Symptom: My Mac does not connect to the Internet."
Thank you for posting in the Apple Support Communities.
Best,
Sheila M.

Macbook Pro won't connect to wireless printer anymore suddenly

Suddenly my Macbook Pro won't connect to my HP Photosmart B210e Printer. I have tried adding it via IP address, it worked but I can't print anything. It says the printer is busy and idle? I updated the software and drivers. All other computers and devices in my home connect just fine. It is connected to our wireless router as is my laptop.
I have searched online and done all the solutions I could find and nothing is working. VERY frustrated as I have to log onto my Dell to print anything.
Thanks in advance for any help!
Kim

"It says the printer is busy and idle?"
System Preferences>print and Scan. What is the staus of the printer? Green light for idle or yellow light for in busy? Have you tried power down the printer and paowering it back up?

My macbook pro won't connect to my airport extreme

My Macbook Pro won't connect with my airport extreme network....the extreme seems to be working fine....Any thoughts? I ahve tried diagnositics and assistant....thanks

OOPS...it actually says "Incompatible security". Any ideas? I had no problems connecting to my other wireless network at home.

My Mac Pro won't connect to Wifi?

My Mac Pro won't connect to the Wifi that it has been for the past 2+ years. All other devices in our home that use the same Wifi are working just fine.

Tried doing Network Diagnostics multiple times, did not work. Keeps saying it can't connect or times out.
What color was the light pertaining to Wifi in the left column? Red, Green, or Yellowish/Orange?
Some of the following you may have already tried:
Try the basics first:
Change your router channel number. Most times this works & is all you have to do.
Disconnect & reconnect your modem. unplug it for about 10 seconds. Plug it back in. Do the same for Apple’s routers. Wait for everything to reboot.
System Preferences>Network
Click the Assist Me button.
In the next window that pops up, click the Diagnostic button & do the necessary.
Research Knowledge Base for network problems that pertain to the OS that is currently installed on your computer. See these basic networking KB Articles: http://support.apple.com/kb/HT1401 AirPort troubleshooting guide
http://support.apple.com/kb/HT4628 Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT2712 Using network locations in Mac OS X
Manually provided DNS server addresses are higher priority than DHCP's
http://support.apple.com/kb/HT1714 Solutions for connecting to the Internet, setting up a small network, and troubleshooting
============================
What to do when you can't connect to the Internet
Also, run the Airport Utility app which is located inside the Utilities folder.
=====================
If using a Linksys router, contact LinkSys Customer Support and/or post in their forums.
If using Apple's Airport, please re-post over in one of the AirPort Forums.

Macbook Pro suddenly stops connecting to wifi

So yesterday, my macbook pro suddenly stopped connecting to any wifi sources at all. Instead after trying to connect, it just gives me the icon with the ! mark, saying that there is no connection made. I've tried multiple routers/sources, and they all don't work. The only reason I'm even connected to the internet right now is through tethering via usb (when I try to make my phone a hotspot, my computer doesn't read it, of course).
Does anyone have any idea why this would happen?
My software is up to date, completely. Macbook Pro, 2010 model, OS X Lion 10.7.3

Give a call to ISP tech support.
If you have time to read, the link below will take you to the Apple support site.
http://support.apple.com/kb/HT4628?viewlocale=en_US

Macbook Pro won't connect to WIFI

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