Macbook air does not connect to wifi. MacBook doesn't see WiFi network. Restarting network devices
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2013 Macbook Air users are complaining about wireless problems Wi-Fi connections. A lot of assumptions are being made in search of answers to a number of questions. Is this flaw inherent in this model at all or did it affect only one batch of goods? Is the problem in OS X or just in the operating system's network protocols?
PC Magazine reviewed some known problems and offered owners MacBook Air who have difficulties, recommendations for solving problems.
Lost Internet connection and slow data transfer
First of all, it is unclear whether most of the complaints relate to loss of Internet connection or internal glitches. home network, such as when connecting to a router or other network devices such as a NAS. Judging by posts on the Apple forum, a significant number of users are complaining about Internet connection failures. Several tech reviewers and analysts have noted the slow data transfer speeds of the new MacBook Air in their articles. This indicates more local problem- perhaps within OS X or, as some observers believe, related to network protocol, used by the operating system.
However, the true cause of the failures is still unknown. Apple hasn't made any announcement about the problem, although there have been reports that Apple Genius Bar staff have been instructed to collect information... and MacBook computers Air, with complaints from their owners. But until we know more and receive confirmation from Apple, it is premature to look for someone to blame.
For several days we have been testing the new 13-inch MacBook Air with the latest base station AirPort Extreme Base Station 802.11ac standard. There were no connection interruptions during testing.
Possible solutions to the problem
Update your router firmware. Make sure that the router has latest version firmware is the first step to eliminating communication failures. Visit your router manufacturer's website, download the software for your model, and follow the update instructions.
Disable some router features. Some browsers have reported problems with TCP window scaling. This usually happens automatically in operating system in order to increase network speed. There is no clear indication that the cause of the problem is window scaling. However, it makes sense to disable several functions that serve network traffic, which may be involved in the router.
Double NAT. For example, it is useful to check whether your network is running double network address translation (NAT). Sometimes ISPs provide users with a cable or DSL modem that already does the conversion. You could add to it wireless router with NAT. Only one device must be configured for NAT.
Quality of Service (QoS) and other features. Try disabling Quality of Service features or program prioritization rules (if enabled). It is also recommended to do backup copy router configuration (many devices provide this option), and then disable features such as port forwarding rules, DMZ, and any others that can be dispensed with without compromising security. In particular, do not disable firewall or wide area network (WAN) security, but try to disable firewall rules for specific applications.
Of course, you shouldn't disable all these features at the same time! If QoS or any other traffic-shaping feature that improves video streaming or the performance of other programs is enabled, disable it, use your MacBook, and see if that fixes the problem. If not, disable something else. A step-by-step approach is the only possible one in this case.
Restore the router to factory settings. Most users probably won't like this recommendation because it involves completely reconfiguring the router. However, sometimes it is useful to start with a clean slate. If you have the time and desire to configure your router again, try resetting it to factory settings and see how this affects the quality of your connection.
Switch the network to 802.11n mode. Many complaints are coming from users of new MacBooks running pre-release 802.11ac routers. For owners of 802.11ac routers who connect a MacBook in 802.11ac mode, we would advise replacing this mode with the old 802.11n with a 40 MHz channel. This may solve the problem for a while, at least until new information comes to light.
Try the new Airport. In our tests, there were no connection dropouts when using the 13-inch MacBook Air and the new AirPort Extreme. This does not mean that the new AirPort will solve some of the problems that the MacBook Air may have. If you are looking to purchase a new router and work on a network with many Apple devices, then the new 802.11ac AirPort is worth considering.
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Let's now look at the main reasons why your MacBook Pro or Air does not connect to WiFi automatically, although this network is familiar to it, i.e. The password is correct, but it still says that the time has expired.
This article is suitable for all MacBook Pro and Air models released in different years. There may be some differences in architecture or description Mac versions OS.
Causes of the problem
First of all, you need to determine what the problem is. Various error information will help you choose the right decision.
Update your software
- For a Mac computer, install all available updates.
- If you are using a third-party Wi-Fi router, check whether the latest firmware version is installed on the device. If an update is available, follow the manufacturer's instructions to install it.
- Check that the firmware of the Apple Wi-Fi base station is up to date.
Do the symptoms appear on other Wi-Fi devices?
WITH Wi-Fi problems may be connected due to the network or computers connected to it that are equipped with a Wi-Fi module. If other devices connect to the Internet without problems, then most likely the Wi-Fi router is working.
Ask your question to a specialist
Don’t know how to solve a problem with your gadget and need expert advice?
Checking connections
Specific problems problems with the network may be caused by disconnected or loose cable connections. We check all power cables and Ethernet cables that are connected to Wi-Fi router. You can solve the problem after checking that the modem and router are turned on, turning them off and then Ethernet connections cables or replacing damaged cables.
Restarting network devices
Turn off the power to the router or modem for a few seconds, then turn it on again. This way you can solve a number of network problems without taking additional troubleshooting measures.
Checking TCP/IP settings
If the device is connected to Wi-Fi networks, but there is no access to the Internet, then you should check the TCP/IP settings. Select the “Network” area in the “ System Settings" and perform the following steps:
Resetting Wi-Fi settings
In most cases full reset Wi-Fi settings allows you to solve the problem. We carry out the algorithm of actions:
Hardware shutdown of the Wi-Fi module
Increase
This will cause the Wi-Fi module to be disabled, which often solves the problem.
Hardware problems
The Wi-Fi module itself often breaks down, and the situation may manifest itself without visible reasons. Wi-Fi problems may be due to the following:
- Contact with moisture.
- Voltage drop.
- Factory defect.
In almost all of the above situations, it is necessary to change the Wi-Fi module. Even if a problem occurs, you need to check Wi-Fi antennas. They very rarely break on their own, since they are very securely placed in the display case and are almost not subject to wear.
You've probably already checked the functionality of the router and made sure that everything is in order with it, but just in case, let's remind you. This must be done first to eliminate problems. wireless network and make sure that other devices connect to it without problems and the Internet works on them.
2. Install system updates
Sometimes problems with wireless Internet occur due to software glitches in macOS. Typically, Apple quickly finds and fixes them, releasing system updates that contain the corresponding fixes.
To check and install the update, go to “Settings” → “Software Update” and click the “Update Now” button. On macOS High Sierra and above earlier versions start Mac App Store, go to the "Updates" tab in the top panel and install the available ones.
If your computer does not have an Ethernet port, then use an adapter or distribute the Internet via iPhone using USB mode.
3. Turn Wi-Fi off and on
Oddly enough, this banal advice helps. Turning off Wi-Fi completely deactivates the Mac's wireless module, and often this manipulation allows you to solve the problem if it arose due to some minor problem.
You can disable Wi-Fi by clicking on the Network icon in the menu bar or through the system settings in the “Network” section. Wireless access is resumed by pressing the same button again.
4. Change network location
With the Placement feature, you can quickly switch between different sets of Network settings, such as at home and in the office. In some cases, creating a new location can help fix Wi-Fi problems.
To apply this method, open Settings → Network and in the Placements list, select Edit Placements.
Click “+” and confirm creation by clicking “Finish”.
After this, macOS will automatically switch to the new connection and try to connect to the wireless network.
5. Delete the Network and connect to it again
8. Reinstall macOS
Finally, the last option you can try is reinstalling the system. If it is performed correctly, all previous errors that could have accumulated after macOS updates from previous versions are erased and if the problem was in them, then it should be solved.
Sometimes your computer loses its ability to access the Internet. What to do when your MacBook doesn't see Wi-fi? As with any other computer problem, you first need to determine the cause of the situation.
In this particular case there may be several:
- No connection due to loose cable.
- The router is malfunctioning.
- Problems with the operating system.
- Incorrect network connection settings on the MacBook itself.
- The router is not configured correctly.
The above reasons are ordered by the level of ease of their solution. It is recommended that you perform all steps in the order described below.
Lagging cable
Check that all cables, both data and power, are correctly and securely connected to the router and computer. If not, then disconnect and reconnect them. To avoid damage, first disconnect all equipment from the power supply.
Router failure
Using the power button, turn off the router, wait 20 seconds and turn it on again.
Operating system crash
Just restart your computer and check your Wi-Fi again.
Poor network connection setup
Check to see if the Wi-fi icon is visible in the top right corner of the screen. If displayed, click on it to see all in the drop-down list available networks, look which one is on at the moment active (checkmark next to the network name). Specify your network if it is not active. Check that your network access password is correct.
If there is no Wi-fi icon, go to System Settings – Network –WiFi. Check the box next to the option to display the icon and after closing, check the network as written in the previous paragraph.
If these actions did not bring a positive result, and you are not very knowledgeable about computer technology, then contact your provider or ask someone more experienced to sort out the problem.