HT4199 My Mac Air suddenly got disconnected only to my Wifi at home.

It catches the signals of the neighbors connections.
And my other computers are using with no problem the wifi connection at home. I´ve tried everything with the routher, aiport and settings and nothing happens...

Try the following, in order, until (hopefully) resolved:
1a. Delete Preferred Network(s)
System Preferences > Network > AirPort > Advanced > AirPort tab
Under "Preferred Networks," delete the network(s) you regularly use from the list.
1b. Delete AirPort Keychain Entries
Launch the "Keychain Access" application located in Applications/Utilties.
Click on the "Kind" filter at the top, and look for any "AirPort network password" entries...and delete them.
1c. Add Preferred Network(s)
System Preferences > Network > AirPort > Advanced > AirPort tab
Add the preferred network(s) using the "+" button.
Restart or log out then back in.
2. Move System Configuration Files
(Note: You will have to reestablish your network connections settings.)
Go to /Library/Preferences
Move the SystemConfiguration folder to the desktop.
Restart your Mac. (Note: OS X will rebuild the files that are now sitting on your desktop. If this doesn't resolve the issue, you can move the folder back to it's original location.)

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My new Mac Air continues to disconnect from WiFi after going to sleep. When waking it up I have to manually re-connect. How do I keep it connected?

My new Mac Air continues to disconnect from WiFi after going to sleep. When waking it up I have to manually re-connect. How do I keep it connected?

I had this problem too and solved it by doing a clean install. After that it was gone.
This is a drastic method since it takes quite some time to reinstall lion and all your software.
Thoughts I had why it started working after a clean install are the following:
It looked like the airport wasn't able to reconnect fast enough before the connection timed out. So what could have prevented my mac from being able to connect fast enough?
Apps that consume processor cycles. I love what I would call 'System Enhancers', little apps that enhance my workflow (Moom, Alfred, Dropbox, Default Folder etc). I'm not saying that these are the problem, they might be programmed processor friendly, but check if you have apps that consume processor cylcles. It might prevent airport from being able to reconnect quickly enough before it times out.
Mobile Config profiles. Another thought I had was that I had a mobile config 802.1X profile installed for the company were I worked. It used TTLS to connect to the corporate network. This profile might have gotten in the way.
And a sidenote...
Routers with hardware acceleration might also be a problem. My router is a Wireless Gigabit Router 300N WL-351 and has hardware acceleration. As soon as I activate that my wifi connection keeps dropping. It is as if a Macbook Air can't handle that amount of optimisation.
That's it, hope it helps those who are still having the problem.
Best, Jan

I cant start my mac air suddenly.

I cant start my mac air suddenly. anybody knows how to resolve?

Try SMC and PRAM resets:
http://support.apple.com/kb/ht3964
http://support.apple.com/kb/ht1379
If no success, bring the MBA to a repair facility.
Ciao.

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Just like many of the Mac Air users, my sound suddenly disappeared. NO sound, no icon. I tried every suggestions recommended in this forum. Finally I brought it in to the Genius Bar who couldn't fix it and had to send it in for service.
After 2 days I got a phone call to inform me that the problem was caused by the dent on the cover and that it will be $400+. I don't remember any dent and based on what I've been reading in this forum and others, it seems to be other problem instead of any such dent!
Although I have Apple Care, changing the hard cover is not covered by such insurance.
I don't know.. I feel like they are just blaming on such because they don't know what is causing it. It has been only a few months since I got my computer. It really makes no sense that a computer that is advertised as a sturdy one is actually so fragile. I think what they are telling me is total BS...

My MBA had no sound for a while, there were no hardware to choose/select in the system preference nor in About this MAC option.
I've tried everything possible (other then sending it in for repairs) to restore the sound.
Well long story short. I had order a hard shell cover for my MBA. During the process of snapping on my cover, my sound came back! I couldn't believe it, I thought it was from something other than the MBA. I realize during the process of putting on the shell cover, I had to apply pressure at specific points on my MBA. I applied pressure to each location where the cover had a snap lever.
I believe this pressure may have push in the cabling / pins for the sound card. Since then I have not loss my sound capabilities.
I thought it might have been a fluke. Therefore I shut the MBA down and restarted it and I heard the startup sound. I did this several times to ensure it was working properly.
So far it has been two weeks and sound still works!
What do you have to loose? Try applying pressure (not too hard though) on the sides of the MBA, along the left and right sides of the monitor and the left and right of the keyboard. It may or may not work, but it is worth a try before sending the MBA in for repairs.
Good luck and I hope it works for those who are having sound problems with their MBA.
Regards,
I Am Webhead

I suddenly got disconnected plz resume

my chat got disconnected please resume and help me
<Edited by Host>

Welcome to the discussions,
we are all users here, just like you. Apple can't be reached by posting in the discussions.
You'll have to contact them again and tell the Apple employee your case number.
Apple - Support - iPhone - Contact Support

My Mac air battery last for only 2 hours

Hi all,
i have Mac Air 13 inch, with a processor 1.8GHz running OSX 10.8.2 and lately the batery last for a maximum of 2 hours and the internal fan is always working with lound sound

Why does question stay unanswered? This is a very bad practice from Apple.
apple has nothing to do with questions being answered or not, the people who answer questions on here are just other users like you who are not getting paid to be here

My mac air suddenly restarts while i am working. Now, everyday

And today, it''s been 3 times so far. It began one week ago.

These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Step 1
For this step, the title of the Console window should be All Messages. If it isn't, select
SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
View ▹ Show Log List
from the menu bar at the top of the screen.
In the top right corner of the Console window, there's a search box labeled Filter. Initially the words "String Matching" are shown in that box. Enter "BOOT_TIME" (without the quotes.)
Each message in the log begins with the date and time when it was entered. Note the timestamps of the BOOT_TIME log messages, which refer to the times when the system was started. Now clear the search box and scroll back in the log to the last boot time when you had the problem. Select the messages logged before the boot, during the time something abnormal was happening. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
For example, if the system was unresponsive or was failing to shut down for three minutes before you forced a restart, post the messages timestamped within three minutes before the boot time, not after. Please include the BOOT_TIME message at the end of the log extract—not at the beginning.
If there are long runs of repeated messages, please post only one example of each. Don’t post many repetitions of the same message.
☞ When posting a log extract, be selective. A few dozen lines are almost always more than enough.
☞ Some private information, such as your name, may appear in the log. Anonymize before posting.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Step 2
In the Console window, select
DIAGNOSTIC AND USAGE INFORMATION ▹ System Diagnostic Reports
(not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select
View ▹ Show Log List
from the menu bar.
There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A crash report has a name that begins with the name of the crashed process and ends in ".crash". A panic report has a name that begins with "Kernel" and ends in ".panic". Select the most recent of each. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.
I know the report is long, maybe several hundred lines. Please post all of it anyway.
☞ If you don't see any reports listed, but you know there was a crash or panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.
In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)
☞ Please don’t post other kinds of diagnostic report—they're very long and rarely helpful.

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I tried to delete some pictures and games I don't use on my Mac Air, it got frozen, I forced quit finder and shut off the computer. Now, when I try to start it up, it stops with the white screem, the apple and the cursor that runs over and over and nothing happens!
I tried to re-start it using the tips from the manual, pressing Shift/Control/Alt and Power, Power and Command/R/P and it didn't work.
What can I do?

Backup your MBA then take it to Apple

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Hi,
my mac air suddenly for the first time ever , won't close down. I have a feeling I have opened a dodgy email but not sure, it is from a contact but could be hacked?
On my pc I would use ctl +alt+del to bring up task manager to close dow the pc, is there a similar command for the mac?
Thanks,

Hi, thank you for reply,
sorry but I don't know which is the option key on the mac? (oops). I had tried several times using the power button but that wasn't working either.
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Mac air ''11 track pad/ system problem?

Hello,
I have a mac air 2011 ill give more specs when i get home.
So i turn my mac on and it acts normal for a few mins, then the cursor starts flipping out and when i move my R.A.T mouse. I cannot click on anything st all no side bar no windows open nothing on the desktop. My track pad has been warn down over the past 3 years and ive been using usb mice to game since i got the laptop. The track pad is unresponsive and does not click and moves sporadically when i try to move it.
I recently updated my air to maverick last week. Prior to this it had no problems at all. Then again my track pad has been messed up for a while now, jst before this happened, it would occasionally stick or double click when i click once.
I have tried PRAM reset. It works for about 5 mins and then it goes crazy again. Thr two things ive seen online is get a t-6 hex screw driver and tighten the screws or go to apple. Any one else have this problem? Is there any simple fix or anything i can do? Also i hVent had time to get a screwdriver yet.
So basically i cant use my laptop now. I can turn it on for five minutes but if i touch the track pad or wait a bit, the laptop will jst spazz the cursor out and after that it i cant click anything. Also during the spazz period i saw that it sometimes goes to mission control, the screen where all of your desktops or full screen programs pop up. Help meeee i need to get back to gw2!! Thanks

Hi Jenny ...
Try Resetting the System Management Controller (SMC)

HELP! Mac Air, Wifi, Connecting Problem

My MBA suddenly have some problem connecting my WiFi at home, while my PC and Cellphone all doing fine. The problem is whenever I tried to connect internet with Air, Something like:"Another device on the network is uding your computer's IP address,try connecting again later. If you continue to have problems, change the IP address of this computer or the IP address of the other device. Contact the network administratot if you need more information." will pop out.
But actually, I did not have the mentioned "other devices" using the same IP.
Please help!

Try assigning a static ip address. Is your wireless internet password protected? If not someone else could be using it. this can cause the issue.
your ip range may be 192.168.1.100 to 192.168.1.110 this would give you 10 possible ip addresses, 10 devices. (Normal for home use).

Suddenly my Mac Air keeps disconnecting from wi fi. Help!!

My Mac Air keeps disconnecting from wifi. Help!!

Read Wi-Fi: How to troubleshoot Wi-Fi connectivity
Please reply with how far you get with its suggestions.

Hi, I purchased my 13" Mac Air last week and I got a black screen last night. It appeared to be in sleep mode but then suddenly woke up. Has anyone experienced this black screen problem?

Has anyone had your Mac Air get a black screen in the middle of working on laptop?

You can return a new Mac within 14 days of purchase.
A new Mac is in warranty for 1 year from the date of purchase.
A new Mac comes with 90 days of free tech support from AppleCare.
AppleCare: 1-800-275-2273
Call AppleCare.
Best.

Hi.. I'm new to mac, I've got a mac book air and time capsule is it possible to save music,video from iTunes Store directly to time capsule leaving my 128GB Mac free? If so please help..

Hi.. I'm new to mac, I've got a mac book air and time capsule is it possible to save music,video from iTunes Store directly to time capsule leaving my 128GB Mac free? If so please help..

You can move your iTunes library.. Apple have explicit instructions to do it. If the library is moved to the TC and accessed over wireless, the efficiency of the whole system will drop dramatically..
A file you download goes.. Modem---TC--Laptop--Back to TC--Store on disk. Double looping the wireless slows it dramatically..
As far as using TC for your iTunes.. you CAN.. but SHOULD YOU?
Store files on the TC.
https://discussions.apple.com/message/24380694#24380694
This is asked several times a day.. obviously people are struggling with their latest SSD being too small.
The TC is not suitable for network file server.. but many people having no choice press it into service as such.
It cannot be partitioned. It was and is and ever shall be a backup device for Time Machine.
Major issues.
1. No backup.. no way Time Machine can backup a network drive. No place to backup to.. So all your files will be at risk. And you will need to buy a third party like CCC to do backup.
2. The TC cannot be partitioned and mixing TM backups and data is not great.
3. The drive is slow to spin up and quick to spin down.. there is no controls.
4. iPhoto in particular can easily corrupt its entire library with wireless networking causing a disconnection to one photo. Even if you do this;;; do not move your photo library... you have been warned!!
5. iTunes will constantly lose connection to the library. The disk is too slow to respond.. itunes on the computer will constantly spit out errors. Even in the midst of streaming the TC can spin down the disk due to caching.
6. Do not use any live files on the TC no matter what else you do.. if you edit files in whatever program the file must be on the local hard disk.
7. The only suitable location for most libraries is a computer. You can plug in an external hard disk.
Read pondini for some work arounds.
Q3 here. http://pondini.org/TM/Time_Capsule.html

Somehow i have got mackeeper and the smartsearchnet on mac air. I do not know how to get rid of it! please help me

I have got mackeeper and smart search.net on my Mac air. I am new to mac's so i am so lost in how to get rid of things. Im not sure how i got it but i just want it gone now mac book is only a couple months old so running all latest programmes on it. Can anyone help me please?

You may have installed a variant of the "VSearch" ad-injection malware. Follow Apple Support's instructions to remove it.
If you have trouble following those instructions, see below.
Malware is always changing to get around the defenses against it. This procedure works as of now, as far as I know. It may not work in the future. Anyone finding this comment a few days or more after it was posted should look for a more recent discussion, or start a new one.
The VSearch malware tries to hide itself by varying the names of the files it installs. To remove it, you must first identify the naming pattern.
Triple-click the line below on this page to select it, then copy the text to the Clipboard by pressing the key combination command-C:
/Library/LaunchDaemons
In the Finder, select
          Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.
A folder named "LaunchDaemons" may open. Look inside it for two files with names of the form
          com.something.daemon.plist
and
           com.something.helper.plist
Here something is a variable string of characters, which can be different in each case. So far it has always been a string of letters without punctuation, such as "cloud," "dot," "highway," "submarine," or "trusteddownloads." Sometimes it's a meaningless string such as "e8dec5ae7fc75c28" rather than a word. Sometimes the string is "apple," and then you must be especially careful not to delete the wrong files, because many built-in OS X files have similar names.
If you find these files, leave the LaunchDaemons folder open, and open the following folder in the same way:
/Library/LaunchAgents
In this folder, there may be a file named
          com.something.agent.plist
where the string something is the same as before.
If you feel confident that you've identified the above files, back up all data, then drag just those three files—nothing else—to the Trash. You may be prompted for your administrator login password. Close the Finder windows and restart the computer.
Don't delete the "LaunchAgents" or "LaunchDaemons" folder or anything else inside either one.
The malware is now permanently inactivated, as long as you never reinstall it. You can stop here if you like, or you can remove two remaining components for the sake of completeness.
Open this folder:
/Library/Application Support
If it has a subfolder named just
           something
where something is the same string you saw before, drag that subfolder to the Trash and close the window.
Don't delete the "Application Support" folder or anything else inside it.
Finally, in this folder:
/System/Library/Frameworks
there may an item named exactly
            v.framework
It's actually a folder, though it has a different icon than usual. This item always has the above name; it doesn't vary. Drag it to the Trash and close the window.
Don't delete the "Frameworks" folder or anything else inside it.
If you didn't find the files or you're not sure about the identification, post what you found.
If in doubt, or if you have no backups, change nothing at all.
The trouble may have started when you downloaded and ran an application called "MPlayerX." That's the name of a legitimate free movie player, but the name is also used fraudulently to distribute VSearch. If there is an item with that name in the Applications folder, delete it, and if you wish, replace it with the genuine article from mplayerx.org.
This trojan is often found on illegal websites that traffic in pirated content such as movies. If you, or anyone else who uses the computer, visit such sites and follow prompts to install software, you can expect more of the same, and worse, to follow. Never install any software that you downloaded from a bittorrent, or that was downloaded by someone else from an unknown source.
In the Security & Privacy pane of System Preferences, select the General tab. The radio button marked Anywhere should not be selected. If it is, click the lock icon to unlock the settings, then select one of the other buttons. After that, don't ignore a warning that you are about to run or install an application from an unknown developer.
Then, still in System Preferences, open the App Store or Software Update pane and check the box marked
          Install system data files and security updates (OS X 10.10 or later)
or
          Download updates automatically (OS X 10.9 or earlier)
if it's not already checked.

HT4199 My Mac Air suddenly got disconnected only to my Wifi at home.

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