Can't connect to the internet

Ok. so i did a search and didn't come across any other problems like the one I'm having.
Let me start off by stating that my laptop is an ibook g4 bought feb, '06 (yes the apple care just ran out).
I'm having a problem connecting to the internet on my ibook, running through a d-link wireless router. I'm using my imac to connect to the internet currently (which works fine by the way). It also is connected through the wireless router.
My ibook has a strange ailment. I open up Safari and all I get is a blank screen, the page is trying to load but the status bar is going no where and does the same in Firefox. So first, I opened Network diagnostics, but the computer freezes and I have to do a hard shutdown. (holding the power button). Next, I tried Disk utility. Verified Permissions, Repaired Permissions, everything is fine. I tried to Verify Disk, and again the computer freezes, will not let me force quit and I am forced to do another hard shutdown. I do the thing where you hold down some key while you're starting up to get into the disk utility so I can repair the disk. This returns clean as well. I downloaded techtool off of my Applecare disk. Did the tests, everything passes. So what's the deal?? I've tried to reset the pram. I even did the Apple Hardware test, everything passed.
I thought it could be my Airport card? It recognizes that there is an internet connection in the top right corner, I even have great signal strength (mostly because I've tried this sitting right next to the router). But still, I can't connect to the internet. Any one have any ideas? I don't know what else to try! Please help!

so i can't believe i didn't try to connect it directly to the router with the ethernet cord. This actually worked. But it still didn't solve my wireless problem. I'm not willing to let my laptop become a desktop. I'm already wired to a plug b/c the battery is slowly dying and has a life of about 5 minutes. I'm not willing to give up my wireless internet too.
I guess now it's got to be the airport card? how do I confirm this? and if it is how much would a new one cost and can I install it myself??

Similar Messages

After update I can't connect to the internet in no way, shape or form

I rarely update because: 1) something always breaks when you update (like now) and 2) I don't like to deal with new crap like GNOME 3. Anyway:
I bought a new router (TL-WR1043N) and configured it with an old Ubuntu because connecting to 192.168.1.1 didn't work on any of my Arch Linux installations. Now... here's where it all starts... I can't use the 'n' wireless on my laptop since I have to install something to use WPA, and to install that I need to update, but I don't want to deal with GNOME 3 and Firefox >3. But I gave up eventually gave up and connected my laptop to the router by Ethernet cable. Setting that up was very easy: 'ifconfig eth0 up; dhcpcd'. Voila! I updated my whole system and restarted. To see how badly I damaged my system I opened Nautilus (I use Openbox with some GNOME programs): shock and dismay, the fonts are visible from the moon. I guess I'll have to quit using GNOME programs completely now but I expected that. I used to use KDE back in the day and when KDE4 came forth from that unholy pit, I immediately abandoned it for GNOME. This time we had more time to prepare, everybody knew what GNOME 3 was going to be. I started using Openbox quite a long time ago.
Anyway: Now to fix my wireless right? WRONG! I can't connect to the internet on cable to get the packages for wireless. I installed Windows 7 64 on the same laptop and it connects to the cable. Ubuntu 9.10 Live also connects, but due to the changes of rc.conf and network stuff I can't connect at all with Arch Linux.
So I decided to abandon it completely and reinstall from scratch. But the Live CD also doesn't work. With all the ways I've tried it all comes down to this:
dhcpcd always times out waiting for a carrier and 'ip addr' shows 'eth0: <NO-CARRIER, ....' if the interface is up. I'm not sure what information I should give you, but I can't paste any here since I can't connect to the damn internet on that laptop.
About the router: the cable is plugged on port 1 and the LED for it flashes if I reboot the computer. In Windows it stops flashing while it connects and flashes again when connected. I removed 'network' from DAEMONS and it flashes till I start it with '/etc/rc.d/network start'. This hangs for a while and returns '[DONE]' even though it doesn't work and the LED never flashes again on the router.
In rc.conf I have exactly what the example says for DHCP. In any case, it doesn't work with the Live CD either.
EDIT 1: From lscpi: painstakingly typed:
06:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
07:00.0 Ethernet controller: Realtek Semiconducctor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
EDIT 2: Just to be clear: I can use the wireless on the laptop on the Live CD, but I want to use the cable because of the greater speed (94Mbit/s on cable 60 something on wireless n, 20 something on g) and because I rarely move the laptop.
EDIT 3: lspci -v shows "Kernel driver in use: r8169 / Kernel modules: r8169", so the driver is loaded.
EDIT 4: So if I boot from the CD. ip addr shows:
eth: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 00:1d:92:...etc... brd ff:ff:ff:ff:ff:ff
And the LED flashes. When I type: "ifconfig eth0 up" it stops, never to light up again and ip addr shows: "eth: <nO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
Last edited by imtired (2011-09-08 12:36:51)

When you're in Arch, use output redirection
lspci >lspci.out
then boot into Ubuntu or something where you can access the files and the BBS, Of course, don't forget to use a new file for each command output.
The new network config in rc.conf is not that complicated (wired anyway; never used wireless). OTOH I've had issues on two machines where I have to restart the network daemon (rc.d restart network) or rerun netcfg (netcfg eth0) after boot to get connectivity. And I still haven't come to grips with the ip command.

Safari 5.1.1 can't connect to the internet. Every other browser can.

I've tried resetting Safari, reinstalling Safari, and resetting my router to factory settings. Safari still can't connect to the internet, but everything else on my Mac (Snow Leopard 10.6.8) can.
I recently tried setting up Open DNS just because I've had problems with Comcast lately. But I've since returned DNS to be detected automatically.
Thoughts?

kextstat -kl | awk ' !/apple/ { print $6 $7 } ':
at.obdev.nke.LittleSnitch(2.2.05)
com.rogueamoeba.HermesAudio(3.0.2)
com.Cycling74.driver.Soundflower(1.5.1)
com.parallels.kext.prl_hypervisor(4.0
com.rogueamoeba.hermes(3.0.2)
com.parallels.kext.prl_hid_hook(4.0
com.parallels.kext.prl_usb_connect(4.0
com.parallels.kext.prl_netbridge(4.0
com.parallels.kext.prl_vnic(4.0
sudo launchctl list | sed 1d | awk ' !/0x|apple|com\.vix|edu\.|org\./ { print $3 } '
com.parallels.vm.prl_naptd
com.wibu.CodeMeter.Server
com.rogueamoeba.hermes
com.parallels.desktop.launchdaemon
com.orbicule.uc
com.mysql.mysqld
com.adobe.SwitchBoard
at.obdev.littlesnitchd
launchctl list | sed 1d | awk ' !/0x|apple|edu\.|org\./ { print $3 } '
net.culater.SIMBL.Agent
com.parallels.desktop.client.launch
com.adobe.CS5ServiceManager
at.obdev.LittleSnitchUIAgent
at.obdev.LittleSnitchNetworkMonitor
com.google.keystone.user.agent
com.google.GoogleContactSyncAgent
com.adobe.AAM.Scheduler-1.0
ls -1A {,/}Library/{Ad,Compon,Ex,Fram,In,La,Mail/Bu,P*P,Priv,Qu,Scripti,Sta}* 2> /dev/null:
/Library/Components:
/Library/Extensions:
/Library/Frameworks:
AECore.framework
Adobe AIR.framework
Compressor.framework
DSPPublishing.framework
Frameworks
FxPlug.framework
L6TWXY.framework
MacFUSE.framework
MediaServerAPI.framework
NyxAudioAnalysis.framework
PluginManager.framework
ProMetadataSupport.framework
Qmaster.framework
TSLicense.framework
WibuCmMacX.framework
WibuCmWebMacX.framework
XSKey.framework
iLifeFaceRecognition.framework
iLifeSQLAccess.framework
iLifeSlideshow.framework
/Library/Input Methods:
/Library/Internet Plug-Ins:
AdobePDFViewer.plugin
Flash Player.plugin
Flip4Mac WMV Plugin.plugin
Flip4Mac WMV Plugin.webplugin
JavaPlugin2_NPAPI.plugin
JavaPluginCocoa.bundle
NP-PPC-Dir-Shockwave
Quartz Composer.webplugin
QuickTime Plugin.plugin
Silverlight.plugin
flashplayer.xpt
nsIQTScriptablePlugin.xpt
/Library/LaunchAgents:
at.obdev.LittleSnitchNetworkMonitor.plist
at.obdev.LittleSnitchUIAgent.plist
com.adobe.AAM.Updater-1.0.plist
com.adobe.CS5ServiceManager.plist
com.parallels.desktop.launch.plist
net.culater.SIMBL.Agent.plist
org.thebends.iphonedisk.mobile_fs_util.plist
/Library/LaunchDaemons:
at.obdev.littlesnitchd.plist
com.adobe.SwitchBoard.plist
com.apple.aelwriter.plist
com.apple.qmaster.qmasterd.plist
com.apple.third_party_32b_kext_logger.plist
com.mysql.mysqld.plist
com.orbicule.uc.plist
com.parallels.desktop.launchdaemon.plist
com.rogueamoeba.hermes.plist
/Library/PreferencePanes:
Apple Qmaster.prefPane
Flip4Mac WMV.prefPane
Growl.prefPane
MacFUSE.prefPane
/Library/PrivilegedHelperTools:
/Library/QuickLook:
ParallelsQL.qlgenerator
iWork.qlgenerator
/Library/QuickTime:
.DS_Store
AppleAVCIntraCodec.component
AppleHDVCodec.component
AppleIntermediateCodec.component
AppleMPEG2Codec.component
AppleProResCodec.component
DVCPROHDCodec.component
DVCPROHDMuxer.component
DVCPROHDVideoDigitizer.component
DVCPROHDVideoOutput.component
DVCPROHDVideoOutputClock.component
DVCPROHDVideoOutputCodec.component
DesktopVideoOut.component
FCP Uncompressed 422.component
FLV.component
Flip4Mac WMV Advanced.component
Flip4Mac WMV Export.component
Flip4Mac WMV Import.component
IMXCodec.component
LiveType.component
XVIDDelegate.component
iChatTheaterPreview.component
macam.component
/Library/ScriptingAdditions:
Adobe Unit Types.osax
SIMBL.osax
/Library/StartupItems:
ParallelsDesktopTransporter
Library/Address Book Plug-Ins:
SkypeABDialer.bundle
SkypeABSMS.bundle
Library/Input Methods:
.localized
Library/Internet Plug-Ins:
Library/LaunchAgents:
com.adobe.AAM.Updater-1.0.plist
com.google.GoogleContactSyncAgent.plist
com.google.keystone.agent.plist
Library/PreferencePanes:
Hazel.prefPane
Library/QuickLook:
AnimatedGIF_QL.README.rtf
AnimatedGIF_QL.qlgenerator

Can connect to my house network, but can't connect to the Internet (other computers can)

Hello,
I'm experiencing a strange problem. Since I started my Mac Pro (cold start) some hours ago, I've lost the hability to connect to the Internet (Safari and Mail say I'm not connected). However, I can connect to 192.168.2.1 (my router) and see its webpage (it says it's connected to the Internet). If I use another computer on the same network, it can also connect to the Internet.
Weirder, if I go back to my Mac Pro with "no internet" and launch Parallels Desktop, then I can use WinXP to browse the Internet; I'm writing this post on my WinXP virtual machine.
This leads me to think there's a problem with how my Mac OS handles the networking. I have checked the Console, but the only related string I found is this:
16.04.13 22:03:25
kernel
SIOCPROTOATTACH_IN6: en2 error=17
As expected, Google doesn't reveal anything about that (and I'm connected with the first ethernet port). I've tried to restart my Mac, but the problem persists (exact same symptoms).
Could it be a DNS cache issue?
I don't see, other than a DNS problem, why I can't connect to the Internet with my Mac OS while I can on my virtual machines. If it was a driver problem, I wouldn't be able to connect to my router. If it's a DNS issue, where are the DNS caches located in order to clear them (I'd trash the folder)?
I could also reinstall the OS (waste of time, btw), but I'd really like to understand the problem, not just clear it and forget about it.
Or better than guesses, anyone already experienced this?
Any help welcome.

If it's a DNS issue, where are the DNS caches located in order to clear them (I'd trash the folder)
No DNS caches, it looks up the alphabetic and then uses the numberic from then on.
http://17.149.160.49
is Apple, Inc main US web site. It that works, and the alphabetic does not, you have a DNS probelm.

Extreme (b/g/n) can't connect to the internet

my iMac has no problem seeing my airport extreme (b/g/n), but I can't connect to the internet.
I have tried soft / hard reset & factory reset as well, none of them worked. The extreme just keep flashing its amber light.
On my iMac, I have full signal bars, so recognizing the extreme is not a problem. The only thing I find strange is that the IP address (the one assigned by my ISP) is 0.0.0.1.
I tried connecting through an Ethernet cable and it didn't have any problem, so it's not my ISP. The only thing I can thing of is that the extreme somehow is having trouble recognizing that assigned IP and that's why I can't get connect to the internet.
Anyone suggestion? Is my extreme broken? If so, can it be fixed? Please help.

Problem solved!
Every time, I feel so stupid once I find out the answer to my problem.
Here it is from another post by 'dwbird':
"Solution: I found that the service name (optional on the setup) may be optional but if your service doesn't require it and you put a service name in the block it prevents the system from working, hence cannot find the PPoE Server and also cannot get an IP address assigned. Guess the moral of the story is that if it is not absolutely required don't fill in any "optional" blocks"
I deleted the name of my ISP and everything works just fine, the stupidest thing is that this is not the first time...
maybe Apple should consider putting a reminder/warning underneath this OPTIONAL service name field.

Can't connect to the internet with Airport OR ethernet cable

I know many other people are having problems with airport not being able to connect to the internet. I've never had any problems with my mac before, but 2 days ago, it started to act really funny. When i turned it on, my time and date were changed to Jan. 1, 2000, and I kept on getting notifications about configd and mdnsresponder wanting to connect to the internet. I did a little research and fixed that problem. Then, a few days ago, my internet was dropped from my computer completely, and I've never been able to connect via airport since.
The main problem is that even when I plug the ethernet cable into my mac, I can't connect to the internet either. It worked a few days ago, but now my computer can't even connect. It registers that the cable is in the computer, but thats' about it. The Network Diagnostics assistant tells me to restart themodem, and that hasn't been helping at all. Any helpwould be appreciated.

First Reset your Pram to see if resets you clock (the different Date caused the problems. Plus open System Preferences->Date & Time pane. In there make sure you set the current date/time and se if you can have the Mac automatically update the time from a Time Server.

Can't connect to the internet with airport or firewire

I can't seem to connect to the internet with airport or firewire. I recently restored my old G4 mac mini PPC 1.42 (with airport and bluetooth) Tiger 10.4.8 with a new harddrive. I have it connected to my leopard mac pro, internet sharing is on (both computers), the systems are connected, however, the mini just can't connect to the internet. tried it also using airport, no go. network diagnosis seems to go in a constant loop.

works ok with ethernet connection though.
that'll work.

Can't connect to the internet in my home yet other devices can. I tried it in other Wifi places and it connects without a problem. My home Wifi is with Att uverse

Can't connect to the internet in my home yet other devices can. I tried it in other wifi places and it connects without a problem. My home wifi is with ATT Uverse. I cheched the IP address on my laptop and its different than on my Ipod although it on the same network.

Move off WEP to WPA or, preferably, to WPA2 (as recommended by Apple). WEP has been deprecated by the WiFi Alliance since 2004 as insecure (it can be cracked in seconds by any hacker).
Note that each device on a network has a unique IP address but if your address starts with 169 then you did not get a valid IP address assigned to you by your router. If restarting the router did not cure the problem then you should check for a firmware update for your router.

Can not connect to the internet. This is a new problem since I have been using firefox for years.

I can not connect to the internet. I called mediacom due to the problem and they connected me to internet explorer. They indicated I should contact you for help in connecting to the internet. It appears firefox has made some kind of change since last night since I was using firefox for my internet connection last night. Something has changed. Your help will be appreciated.

http://en.wikipedia.org/wiki/Keyhole_Markup_Language
The only way that file opens thru IE8 for me ''(but not actually in IE8)'' is by using the Zip Utility (then IE closes) that is in WinXP and then opening the two image files in the Windows Fax and Picture Viewer.
I think Firefox is trying to display that file because the MIME-type is for '''''text/plain''''' instead of the appropriate MIME-type of '''application/vnd.google-earth.kml+xml''' or '''application/vnd.google-earth.kmz'''
That is something that needs to be configured in the server that is hosting that file type. Sorry, I don't know how that can be fixed. The one support person here that might know lives in Europe ''(I believe)'', so you might need to wait for an answer.

Help! My MacBook air can't connect to the Internet

My MacBook air is connecting to my home wifi but somehow suddenly it just can't connect to the Internet! So I'm having an exclamation mark on the wifi fan......
And my iPhone and iPod are connecting to the Internet perfectly well using the same wifi...

It worked perfectly well for the past 3 months... :((((
I tried to reboot the router and it still doesn't work.....

I put the BT WiFi app on my iPad Mini and now I can't connect to the internet. Please help

I put the Bt WiFi app on my iPad Mini and now I can't connect to the internet. Please Help

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/
~~~~~~~~~~~~~~~~~~~~~~~~~
Fix WiFi Issue for iOS 7
http://ipadnerds.com/fix-wifi-issue-ios-7/
iOS 6 Wifi Problems/Fixes
Wi-Fi Fix for iOS 6
https://discussions.apple.com/thread/4823738?tstart=240
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
10 Ways to Boost Your Wireless Signal
http://www.pcmag.com/article2/0,2817,2372811,00.asp
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.
Some Wi-Fi losses may stem from a problematic interaction between Wi-Fi and cellular data connections. Numerous users have found that turning off Cellular Data in Settings gets their Wi-Fi working again.
You may have many apps open which can possibly cause the slowdown and possibly the loss of wifi. In iOS 4-6 double tap your Home button & at the bottom of the screen you will see the icons of all open apps. Close those you are not using by pressing on an icon until all icons wiggle - then tap the minus sign. For iOS 7 users, there’s an easy way to see which apps are open in order to close them. By double-tapping the home button on your iPhone or iPad, the new multitasking feature in iOS 7 shows full page previews of all your open apps. Simply scroll horizontally to see all your apps, and close the apps with a simple flick towards the top of the screen.
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

Can I connect to the internet with an Ipad in Santo Domingo, DR while I'm on vacation?

Can I connect to the internet with an Ipad in Santo Domingo, DR while I'm on vacation?

Lots of hotels in the DR have WiFi. And there is plenty of cellular coverage in Santo Domingo (and elsewhere).
One thing to be careful of, the WiFi networks are usually not secured and are very vulnerable to people "listening" for passwords and user names, so don't do any financial transactions online and perhaps consider setting up some temporary passwords for the trip and changing them when you get home.
-dan

Ipad keeps asking me to sign into iCloud. The problem is, I can't connect to the internet to do this because it keeps popping up. It's a 'catch 22'.

A pop up on my iPad keeps asking for my iCloud password, however, when I give it, it doesn't matter because I am not connected to the internet. I CAN'T connect to the internet because of the popup. How can I get rid of the pop up so I can connect?

You have bought the book but have you previously downloaded it to your iPad? If you go to your books collection and there is a little cloud icon on the cover of the book with a down arrow that means it's not stored on your device and you would need an internet connection to read/download it. If that's not the problem and Demo's suggestions don't work how about trying this desperate move: Settings > Airplane Mode (turn on) And try again. Do you have other downloaded books in your collection? If so do they act the same way or do they open ok? If they open then there is something corrupt about that particular book in which case I would delete it and re download it when you have access to the internet.

Some of my Mac apps can´t connect to the internet, while Firefox can

All of a sudden, Safari, ITunes, Software Update, can´t connect to the internet. It happens in my office and in my house. Have not checked other networks. Firefox wors fine, as does Mail (for now). What can be the problem?

Please read this whole message before doing anything.
This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
Enable guest logins and log in as Guest. For instructions, launch the System Preferences application, select Help from the menu bar, and enter “Set up a guest account” (without the quotes) in the search box.
While logged in as Guest, you won’t have access to any of your personal files or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
As Guest, test. Same problem(s)?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
Step 2
The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. The instructions provided by Apple are as follows:
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on some Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem(s)?
After testing, reboot as usual (i.e., not in safe mode.) Post the results of steps 1 and 2.

I have CS 6 installed on a Win 7 OS machine. I can not connect to the internet to get updates from within the program. How do I fix this?

I have CS 6 installed on a Win 7 OS machine. I can not connect to the internet to get updates from within the program. How do I fix this?

IP routing doesn't work the way many folks might initially think it does; functional IP routing requires manual configuration and the establishment of static routes and default routes specific to the local network configurations, and it's very easy to get it wrong, or to get the default route swapped. Multiple NIC boxes don't magically work, either. (Been there, done that, wondered what happened to my network when the paths got reordered or my route settings were messed up, etc.)
Routing configuration errors can be quite subtle, too. (Again, voice of experience. Ever had a thousand-seat office LAN accidentally routing through your desktop? As the, um, unnamed guilty party discovered, getting into that configuration was subtle. Seeing the performance crater on the fellow's box and on the LAN was obvious.)
Knowing how IP routing works is a prerequisite to getting this configuration to work; there's manual configuration required. Clearly something has gone weird here.
What to do? Read up on IP routing. I'll again suggest the threads and the manual mentioned earlier.
And in general, I prefer to avoid using my comparatively expensive Mac boxes as sub-optimal IP routers or as firewall boxes. General-purpose operating systems and generic x86 boxes are going to be inherently poor IP routers. Dedicated routers (or embedded or surplus x86 boxes with routing software loaded) offload the Mac boxes here, and are also typically easier to configure manage. And "real" IP routers can have hardware specific to efficiently routing packets. Use of an outboard firewall or firewall-router box also greatly simplifies gateway routing, too; it's a configuration that many folks and many businesses tend to use.

Can't connect to the internet

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