Unable to connect to a Wifi WPA2 AES network

Hello
I have an issue to connect to a Wireless WPA2 AES network. I am using an iPhone 4 with iOS 6.0.1
Is that a known issue?

Similar Messages

HT204409 Suddenly my ipad seems unable to connect to our wifi. All other devices are working normally. Have I accidentally done something or is it a fault with my ipad ?

Suddenly my ipad is unable to connect to our wifi. It buffers all the time?
All other devices are working normally. Is this a fault wityh my ipad or have I inadvertantly altered some setting?

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are droping internet connection)
    •    Launch Settings app
    •    Tap on Wi-Fi
    •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
    •    In the window that opens, tap on the Renew Lease button
6. Potential Quick Fixes When Your iPad Won’t Connect to Your Wifi Network
http://ipadinsight.com/ipad-tips-tricks/potential-quick-fixes-when-your-ipad-won t-connect-to-your-wifi-network/
~~~~~~~~~~~~~~~~~~~~~~~~~
Wi-Fi Fix for iOS 6
https://discussions.apple.com/thread/4823738?tstart=240
iOS 6 Wifi Problems/Fixes
How To: Workaround iPad Wi-Fi Issues
http://www.theipadfan.com/workaround-ipad-wifi-issues/
Another Fix For iOS 6 WiFi Problems
http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
How to Boost Your Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.h tm
Troubleshooting a Weak Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Sig nal.htm
How to Fix a Poor Wi-Fi Signal on Your iPad
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Connect iPad to Wi-Fi (with troubleshooting info)
http://thehowto.wikidot.com/wifi-connect-ipad
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Hi, I was working at home with my iPad, everything was going well. It went out battery and after this I am unable to connect to the wifi at home. Before getting out battery no problem, and now it sees the router signal but it is unable to connect to it.

Hi, I was working at home with my iPad, everything was going well. It went out battery and after this I am unable to connect to the wifi at home. Before getting out battery no problem, and now it sees the router signal but it is unable to connect to it.

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are droping internet connection)
    •    Launch Settings app
    •    Tap on Wi-Fi
    •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
    •    In the window that opens, tap on the Renew Lease button
6. Potential Quick Fixes When Your iPad Won’t Connect to Your Wifi Network
http://ipadinsight.com/ipad-tips-tricks/potential-quick-fixes-when-your-ipad-won t-connect-to-your-wifi-network/
~~~~~~~~~~~~~~~~~~~~~~~~~
Wi-Fi Fix for iOS 6
https://discussions.apple.com/thread/4823738?tstart=240
iOS 6 Wifi Problems/Fixes
How To: Workaround iPad Wi-Fi Issues
http://www.theipadfan.com/workaround-ipad-wifi-issues/
Another Fix For iOS 6 WiFi Problems
http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
How to Boost Your Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.h tm
Troubleshooting a Weak Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Sig nal.htm
How to Fix a Poor Wi-Fi Signal on Your iPad
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Connect iPad to Wi-Fi (with troubleshooting info)
http://thehowto.wikidot.com/wifi-connect-ipad
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
Wi-Fi or Bluetooth settings grayed out or dim
http://support.apple.com/kb/TS1559
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

TS1398 help!!! i am unable to connect to a wifi network and ive tried everything but nothing seems to work!!! can someone help pls

help!!! i am unable to connect to a wifi network and ive tried everything but nothing seems to work!!! can someone help pls

try connecting to another wifi network to isolate the issue. at this point it's impossible to tell if it's your phone or your network

My ipad wont accept any passwords, i am unable to connect to my wifi even though my password is correct and other laptops etc have no problem connecting.

my ipad wont accept any passwords, i am unable to connect to my wifi even though my password is correct and other laptops etc have no problem connecting.
The ipad can find my wifi connection but just wont accept the password. connected with no problem in the Apple store.
any suggestions,
thanks.

Does the iPad connect to other networks?
Does the iPod see the network?
Any error messages?
Do other devices now connect?
Did the iPod connect before?
Try the following to rule out a software problem:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on the router
- Reset network settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- Wi-Fi: Unable to connect to an 802.11n Wi-Fi network
- iOS: Recommended settings for Wi-Fi routers and access points
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If still problem make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

When I try and connect to my wifi, I get a response that says "unable to connect to my wifi" and it does not even ask for my password

when I try and connect to my wifi, I get a response that says "unable to connect to my wifi" and it does not even ask for my password; thoughts?

Does the iPod connect to other networks?
Does the iPod see the network?
Do other devices now connect?
Did the iPod connect before?
Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on the router
- Reset network settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- iOS: Recommended settings for Wi-Fi routers and access points
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
- Make an appointment at the Genius Bar of an Apple store.
Apple Retail Store - Genius Bar

TS1398 I tried all solution but still i am unable to connect to my wifi. It started yesterday when my ipad cant connect to wifi.

I tried all solution but still i am unable to connect to my wifi. It started yesterday when my ipad cant connect to wifi.

It's hard to provide help when your question starts out with, "I tried all solutions" however here is some troubleshooting advice.
If you are having WiFi problems it is necessary to isolate whether the problem is with your network or your iPad. Note: Do NOT consider your network to be blameless if some other devices can connect to it.
First, test your iPad on some other WiFi networks: a friends, Starbucks, Barnes & Noble, etc.
If it works well there then the problem is probably with your network. Try restarting your WiFi router by removing power for 30 seconds. If that does not help check for a firmware update for your router. If none exists which corrects the problem consider replacing the router.
If your iPad does not function well on other networks it possibly has a hardware problem. You could try Settings > General > Reset > Reset Network Settings to see if that corrects the problem. If not, contact Apple Support or visit an Apple store for evaluation. They can provide a replacement if your iPad is bad.
If you need more help please give the make, model, and version of your WiFi router and how you have it configured.

Unable to connect to secure Wifi, password input was correct

I was unable to connect to secure Wifi, i ensured that i entered the correct password, i tried to reset my network setting and reconnect to secure Wifi but still unable to connect. However i can successfully connect to public wifi.

Hi Charlesjoseph - I struggled for days and tried all the solutions mentioned in various forums before I realised that the password (the WEP key number) is case sensitive. Once I tried it all in capitals it connected no problem. Doh!!

HT204400 Apple TV unable to connect to the WiFi Router solution.

Having found my new Apple TV unable to connect to my WiFi Router I discovered a technique which may be useful to others. Use your mobile phone as a mobile hotspot instead. I hope this helps other people with a similar connectivity issue.

Hi, i do have a similar situation. Everytime I try to synchronise itunes with my ATV (also version 2.3), it synchronise between 4 and 10 songs and then automatically disconnect the wireless connection on my computer (my ibook and other notebook stays connected at the same time). regards, Erik

Unable to connect Z10 to WIFI 2WIRE MODEM 2710HGV White color modem

Hi, I bought Z10 on 30th March 2013 with great enthusiasm. That enthusiasm didn't last as I was unable to connect to the WIFI with the   WIFI 2WIRE MODEM 2710HGV. I took the help of my service provider but couldn't solve the problem. Yesterday I went to the service provider STARHUB and they were able to connect to the internet via their server. Then I went to the BLACKBERRY expert center at the CATHAY, there also they were able to connect to their server. I have done the basic things like inputting the correct password etc. I even tried setting the home network ID on my z10 but that didn't help. Where can I go wrong?. It
Please help to resolve this problem . Thanks.

I have no idea how to send private message but here is the log.
Wi-Fi Diagnostics Logs
WI-FI INFORMATION
> Status: Not Connected
> Signal Level: -60 dBm
> Failure Reason: Connection attempt timed out.
> Profile Name: 2WIRE285
> SSID: 2WIRE285
> Channel: 6
> AP MAC Address: 00:24:56:e2:7b:d9
> Security Type: WEP
> EAP Method:
> Connection Data Rate: 0 Mbps
> Network Type:
DEVICE INFORMATION
> Physical Address: 40:6f:2a:35:72:3f
> Device OS: BlackBerry 10
> Device Pin: 24DDFFF5
> OS Version: 10.0.10.261
INTERNET CONNECTION
> IP Address:
> Subnet Mask:
> Default Gateway:
> Primary DNS:
> Secondary DNS:
> Domain Suffix:
> MTU:
> Proxy Server:
> Proxy Port:
Supplicant Logs
> 22:25:22: <3>CTRL-EVENT-BSS-REMOVED 593 16:0c:c3:e6:e7:f8
> 22:25:22: <3>CTRL-EVENT-BSS-REMOVED 592 16:0c:c3:e4:04:40
> 22:25:22: <3>CTRL-EVENT-BSS-REMOVED 582 70:54:d2:33:db:e5
> 22:25:22: <3>CTRL-EVENT-BSS-ADDED 599 64:0f:28:56:19:52
> 22:25:14: <3>CTRL-EVENT-BSS-REMOVED 579 16:0c:c3:eb:94:00
> 22:25:14: <3>CTRL-EVENT-BSS-ADDED 598 90:f6:52:78:78:1c
> 22:25:05: <3>CTRL-EVENT-BSS-ADDED 597 64:70:02:42:df:3a
  > 22:24:56: <3>CTRL-EVENT-DISCONNECTED bssid=00:24:56:e2:7b:d9 reason=0
> 22:24:56: <3>WLAN_AUTH_FAIL:UNRESPONSIVE_AP: [id=4]
> 22:24:53: <3>Trying to associate with 00:24:56:e2:7b:d9 (SSID='2WIRE285' freq=2437 MHz) [id=4]
> 22:24:53: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:53: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:53: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:53: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:53: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:53: <3>CTRL-EVENT-BSS-REMOVED 585 16:0c:c3:de:5c:28
> 22:24:53: <3>CTRL-EVENT-BSS-ADDED 596 64:0f:28:4c:2d:d6
> 22:24:53: <3>CTRL-EVENT-BSS-ADDED 595 64:0f:28:4b:f6:6e
> 22:24:53: <3>CTRL-EVENT-BSS-ADDED 594 64:0f:28:57:4e:92
> 22:24:49: <3>CTRL-EVENT-DISCONNECTED bssid=00:24:56:e2:7b:d9 reason=0
> 22:24:49: <3>WLAN_AUTH_FAIL:UNRESPONSIVE_AP: [id=4]
> 22:24:47: <3>Trying to associate with 00:24:56:e2:7b:d9 (SSID='2WIRE285' freq=2437 MHz) [id=4]
> 22:24:47: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:47: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:47: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:47: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:47: <4>   skip - blacklisted (count=1 limit=0)
> 22:24:47: <3>CTRL-EVENT-BSS-REMOVED 578 00:26:50:7a:38:a9
> 22:24:47: <3>CTRL-EVENT-BSS-ADDED 593 16:0c:c3:e6:e7:f8
> 22:24:47: <3>CTRL-EVENT-BSS-ADDED 592 16:0c:c3:e4:04:40
> 22:24:47: <3>CTRL-EVENT-BSS-ADDED 591 20:aa:4b:af:b4:02
> 22:24:43: <3>CTRL-EVENT-DISCONNECTED bssid=00:24:56:e2:7b:d9 reason=0
> 22:24:43: <3>WLAN_AUTH_FAIL:UNRESPONSIVE_AP: [id=4]
> 22:24:40: <3>Trying to associate with 00:24:56:e2:7b:d9 (SSID='2WIRE285' freq=2437 MHz) [id=4]
> 22:24:40: <3>CTRL-EVENT-BSS-REMOVED 571 00:16:b6:33:a1:fa
> 22:24:40: <3>CTRL-EVENT-BSS-ADDED 590 c8:d7:19:69:eb:a7
> 22:24:33: <3>CTRL-EVENT-BSS-ADDED 589 64:0f:28:57:00:82
> 22:24:33: <3>CTRL-EVENT-BSS-ADDED 588 38:60:77:aa:60:64
> 22:24:33: <3>CTRL-EVENT-BSS-ADDED 587 16:0c:c3:de:dc:60
> 22:24:24: <3>CTRL-EVENT-BSS-ADDED 586 00:26:75:87:0d:9a
> 22:24:24: <3>CTRL-EVENT-BSS-ADDED 585 16:0c:c3:de:5c:28
> 22:24:24: <3>CTRL-EVENT-BSS-ADDED 584 16:0c:c3:de:e4:80

TS1398 Unable to connect to home wifi

I'm unable to connect to home wifi with iphone. My computer is able to connect as usual.

Buried deep in that link is a suggestion to turn the router off and on again to reboot it. This should be the FIRST thing you try, not the last. It will usually resolve the problem.

Just bought ipad3 and trying to connect to home wifi, can see network but will not let me progress to put in password

just bought ipad 3 and trying to connect to home wifi, can see network but will not let me progress to enter router password?

Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Change the channel on your wireless router. Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
 Cheers, Tom

I have problem with my wifi in 4 S, i cant connect to any wifi itried resetting network setting and reset all setting but the result was the same, its only keeps searching for wifi and cant find any, itried to use OTHER but also didnt work.please help me

i have problem with my wifi in 4 S, i cant connect to any wifi itried resetting network setting and reset all setting but the result was the same, its only keeps searching for wifi and cant find any, itried to use OTHER but also didnt work.please help me???

If Join was on then your home wi-fi must be set to Non-Broadcast. If you did not set this up (maybe your provider did) then you will need to find the Network Name they used, and any password they used. The SSID is Security Set ID and to see more try http://en.wikipedia.org/wiki/SSID . Basically it is the name used to identify your router/network. A lot of times the installer will leave it set as LinkSys, or Broadcom or whatever the manufacturer set it as for default. Your best bet is to get whoever installed it to walk you through how they set it up, giving you id's and passwords so you can get in. HOWEVER, if you are not comfortable with this (if you set security wrong, etc.) you would be well ahead of the game to hire a local computer tech (networking) to get this working for you. You can also contact the vendor of your router and get help (if it is still in warranty), or at least get copies of the manuals as pdf files. Sorry I can't give you more help, I hope this gives you an idea where to go from here to find more.

I have a MacBook Pro. My mac can detect wifi. But will not connect. I did get connected vis TCP/IP settings but I can't connect to any wifi anywhere. Network diagnostic has a green light for wi-fi and wi-fi settings. Red light for the rest.

I have a MacBook Pro. My mac can detect wifi. But will not connect anywhere. I did get connected via TCP/IP settings but I can't connect to any wifi anywhere. Network diagnostic has a green light for wi-fi and wi-fi settings. Red light for the rest. (Network settings, ISP, Internet and server.)

Hello NotAppleSavy,
Thanks for the question. After reviewing your post, it sounds like the computer wont connect to networks. I see you have used network diagnostic. I would recommend that you read this article, there are a lot of other things you can do in this article that may be able to help you resolve or isolate the issue.
Wi-Fi: How to troubleshoot Wi-Fi connectivity
Thanks for using Apple Support Communities.
Have a nice day,
Mario

My iPad2(Wifi-16Gb) unable to connect to home wifi network after upgraded to iOS6. The said network is a remembered network and never face this connection issue before iOS6.

Forget and reconnect the netwrok doean't solve the problem.
Even Network Reset recommended in others iPad user in the forum can't help as well.
Please advice. Thanks.

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are droping internet connection)
    •    Launch Settings app
    •    Tap on Wi-Fi
    •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
    •    In the window that opens, tap on the Renew Lease button
~~~~~~~~~~~~~~~~~~~~~~~~~
iOS 6 Wifi Problems/Fixes
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
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If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Unable to connect to a Wifi WPA2 AES network

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