您可能喜欢闪亮的新款MacBook Pro，但这并不意味着它是完美的。虽然在原始Apple(Apple)硬件上运行的 macOS 在出现技术问题时不太容易出现，但找到解决方案可能很困难。
多年来似乎总是出现的一个问题是WiFi 连接参差不齐(spotty WiFi connections)。换句话说，您的MacBook要么不断断开其无线连接，要么一开始就拒绝连接。
我们已经搜索了互联网的集体智慧，添加了我们自己的强大信息，并汇集了最有可能让您的MacBook Pro回到信息高速公路的建议。
是 WiFi 问题吗？(Is It a WiFi Issue?)
这似乎是一个显而易见的问题，但您的 MacBook Pro真的存在与WiFi连接相关的问题吗？如果WiFi连接图标显示您已连接到本地网络，但互联网性能参差不齐或只有一些网站可以正常工作，那么问题可能不在于WiFi连接本身。
这类问题不在本文的讨论范围之内。如果您需要互联网方面的帮助，请查看我们(our article)关于该主题的文章。下面我们将只关注WiFi连接问题的潜在解决方案。
基本家政服务(Basic Housekeeping)
在您开始恐慌并查找神秘的巫术仪式以重新打开WiFi之前，请从通常可以自行解决问题的明显而简单的管家步骤开始。
首先，确保您的MacBook已更新(updated)至最新版本的 macOS。然后重启你的Mac，重启你的路由器。从USB/Thunderbolt端口拔下所有东西以消除任何第三方罪魁祸首也是一个好主意。
注意 macOS Wifi 建议(Pay Attention To macOS Wifi Recommendations)
当您使用 macOS 连接到WiFi网络时，计算机将对连接运行一些标准检查，以确保其正常工作。如果有任何问题，您会在WiFi菜单中看到弹出的建议列表。(recommendations)首先尝试解决任何这些列出的问题。如果在遵循建议的建议后问题仍然存在，请继续调查。
WiFi 诊断工具(The WiFi Diagnostic Tool)
如果您确实确定问题与WiFi有关，那么一个好的开始是使用 macOS无线诊断工具(Wireless Diagnostic Tool)。
- 只需按住选项(option )按钮并单击 WiFi 图标。
- 单击打开无线诊断程序(Open Wireless Diagnostics)，然后按照向导运行诊断程序本身。
- 如果该工具应该找到系统性的东西，它会列出问题，您可以专门查找它们。如果问题是间歇性的，您可能会发现诊断工具找不到任何东西。在这种情况下，调查将继续。
最近有什么变化吗？(Did Anything Change Recently?)
您应该考虑的下一件事是当您的WiFi开始出现故障时是否发生了任何特定的事情。
(Did)刚更新驱动？你(Did)是不是换了路由器？如果可能，尝试回滚( roll back)最近发生的更改，以测试问题是否消失。
它只是你的 Mac 吗？(Is It Just Your Mac?)
弄清楚您的MacBook Pro是否是无线连接中断的具体问题，或者使用相同WiFi网络的其他设备是否也存在问题，这一点非常重要。这包括Windows笔记本电脑、智能手机、智能电视(TVs)以及任何其他使用互联网连接的设备。
他们的表现是否符合预期？如果不是，那你的MacBook Pro可能根本就不是问题。如果它跨设备发生，那么共同因素更有可能是路由器。
它在每个网络上吗？(Is It On Every Network?)
同样，如果WiFi(WiFi)网络丢失仅发生在一个网络上，也不要妄下结论。如果问题出在您的 MacBook 上，那么问题很可能会从一个WiFi网络转移到下一个 WiFi 网络。
如果没有，路由器可能再次成为真正的罪魁祸首。如果连接不断断开，请(Make)务必阅读我们关于如何修复路由器(fix your router if the connection keeps dropping)的文章。
问题是否仍然存在于以太网上？(Does The Problem Persist On Ethernet?)
如果您的 MacBook Pro 有以太网适配器(MacBook Pro)，(ethernet adapter)则值得关闭WiFi并直接连接到路由器。如果即使在使用以太网连接时问题仍然存在，则可能再次是路由器的配置问题，因为这消除了WiFi的影响。
信号强度低吗？(Is Signal Strength Low?)
在寻找WiFi丢失嫌疑人时，低信号强度始终是主要候选者。当您靠近并看到网络路由器或接入点时，是否会出现问题？您的路由器与MacBook Pro(MacBook Pro)的连接较弱的原因有很多。
如果您发现靠近网络接入点时连接不稳定消失了，您也许可以使用WiFi 中继器(WiFi repeater)解决问题。这些扩展了您的信号强度，从而使优质WiFi的覆盖范围变得更大。
您也可以考虑在路由器设置中增加信号强度，或者如果还没有添加外部天线。您可以在此处阅读我们提高 WiFi(full guide to boosting WiFi)信号强度的完整指南。
消除干扰源(Remove Sources Of Interference)
现代 WiFi 在2.4Ghz 和 5Ghz 频段(the 2.4Ghz and 5Ghz frequency bands)运行。由于它是数字的并且具有复杂的纠错功能，因此使用相同频率的其他设备通常不会显着影响性能。
但是，您可能希望通过拔下蓝牙(Bluetooth)设备（也是 2.4Ghz）并远离微波炉等设备来消除干扰。切换路由器上的频段也可以提高稳定性。
有渠道竞争吗？(Is There Channel Competition?)
所有WiFi系统都以相同的频率运行，那么为什么它们不会相互冲突呢？答案是他们使用“通道”，将主频率分解为小而窄的通道。
2.4Ghz 和 5Ghz 频率分别有 11 个和 45 个通道。因此，通常情况下，您邻居的路由器(your neighbor’s router)会自动使用一个没有发生任何其他事情的通道。但是，路由器可以手动设置其频道，或者由于某些其他原因，寻找一个好的频道的竞争太激烈了。频道 1,6(Channels 1,6)和 11 是 2.4Ghz 频段的流行选择，因为它们不重叠。
您可以使用智能手机或计算机上的WiFi 分析仪应用程序(WiFi analyzer app)来查看哪些本地WiFi网络正在使用哪些信道，然后将您的路由器设置为使用相对无争议的信道。
从睡眠中醒来后会发生吗？(Does It Happen After Waking From Sleep?)
Mac用户经常遇到从睡眠模式唤醒后(Mac)WiFi无法正确重新连接的情况。好消息是有一种非常可靠的方法可以解决这个问题。
- 首先，进入 Apple 菜单、系统偏好设置，(System Preferences,)然后进入网络(Network)。
- 点击高级(Advanced)。在这里，您将看到首选网络列表。
- Command + A它们全部选中，然后单击减号按钮将它们全部删除。
- 现在回到之前的网络(Network)窗口。单击(Click)位置(Locations )下拉菜单，然后单击加号图标。命名一个新位置并单击完成(Done)。
现在您所要做的就是重新连接到WiFi，从现在开始，从睡眠中醒来后连接到网络应该不再有问题。
忘记网络(Forget The Network)
如果您发现无法连接到某个网络，即使它以前工作过，解决方案通常只是忘记该网络，然后重新连接到它。
如果您阅读了上述从睡眠中唤醒的解决方案，您已经知道如何做到这一点。唯一的区别是您将只选择一个网络，而不是我们上面所做的整个列表。
不再有断线焦虑(No More Disconnection Anxiety)
处理MacBook Pro断开无线连接可能会加重病情。尤其是如果您习惯了MacBook Pro ，否则它可以完美运行。运气好一点，反复试验，以及向Mac众神祈祷，希望您现在可以再次完全访问WiFi。
MacBook Pro Constantly Dropping Wireless Connection?
Yoυ may love your shiny new MacBook Pro, but that doesn’t mean it’s perfect. While macOS running on original Apple hardware is less prone to technical issues when they do crop up finding solutions can be difficult.
One issue that always seems to come back over the years is spotty WiFi connections. In other words, your MacBook either keeps dropping its wireless connection or refuses to connect in the first place.
We’ve scoured the collective wisdom of the internet, added a strong dash of our own, and brought together the advice most likely to get your MacBook Pro back on the information superhighway.
Is It a WiFi Issue?
This may seem like an obvious question, but is your MacBook Pro really having an issue related to the WiFi connection? If the WiFi connection icon shows that you’re hooked into the local network, but internet performance is spotty or only some websites work, then chances are the problem isn’t with the WiFi connection itself.
Those sorts of issues are outside the scope of this article. If you need help with your internet, check out our article on the subject. Below we’ll only be looking at potential solutions to WiFi connection problems.
Basic Housekeeping
Before you start panicking and looking up arcane voodoo rituals to get the WiFi back on, start with the obvious and simple housekeeping steps that can often resolve problems by themselves.
First, make sure that your MacBook has been updated to the latest version of macOS. Then reboot your Mac, and restart your router. It’s also a good idea to unplug everything from the USB/Thunderbolt ports to eliminate any third-party culprits.
Pay Attention To macOS Wifi Recommendations
When you connect to a WiFi network using macOS, the computer will run a few standard checks on the connection to make sure it’s working properly. If there are any problems, you’ll see a list of recommendations pop up in the WiFi menu. Try to resolve any of these listed issues first. If the problem persists after following the proposed advice, continue with the investigation.
The WiFi Diagnostic Tool
If you do determine that the problem is related to the WiFi, then a good place to start is by using the macOS Wireless Diagnostic Tool.
- Simply hold the option button and click on the WiFi icon.
- Click on Open Wireless Diagnostics and then run the diagnostic itself by following the wizard.
- If the tool should find something systematic, it will list the issue and you can look them up specifically. If the problem is intermittent, you may find that the diagnostic tool won’t find anything. In which case, the investigation continues.
Did Anything Change Recently?
The next thing you should consider is whether anything specific happened when your WiFi started acting up.
Did you just update drivers? Did you change routers? If possible, try to roll back changes that happened recently, to test whether the problem goes away.
Is It Just Your Mac?
It’s very important to figure out if your MacBook Pro is specifically the issue with dropping wireless connection or whether other devices using the same WiFi network are also having issues. That includes Windows laptops, smartphones, smart TVs, and anything else that uses an internet connection.
Are they performing as expected? If not, it may not be an issue with your MacBook Pro at all. If it happens across devices, then the common factor is more likely to be the router.
Is It On Every Network?
Similarly, don’t jump to conclusions if WiFi network dropouts happen on only one network. If it is your MacBook that’s the issue, the problem will likely follow you from one WiFi network to the next.
If it doesn’t, once again the router may be the true culprit. Make sure to read our article on how to fix your router if the connection keeps dropping.
Does The Problem Persist On Ethernet?
If you have an ethernet adapter for your MacBook Pro, it’s worth switching off the WiFi and connecting directly to your router. If the problem is still present even when using an ethernet connection, then it may once again be a configuration issue with the router, since this eliminates WiFi as a factor.
Is Signal Strength Low?
Low signal strength is always a prime candidate when looking for WiFi dropout suspects. Does the problem happen when you are close to and in sight of the network router or access point? There are many reasons your router may have a weak connection to your MacBook Pro.
If you find that your connection instability goes away when closer to the network access point, you may be able to solve the problem with a WiFi repeater. These extend your signal strength so that the footprint of good quality WiFi becomes larger.
You may also consider increasing signal strength in your router settings or adding an external antenna to it if you haven’t already. You can read our full guide to boosting WiFi signal strength here.
Remove Sources Of Interference
Modern WiFi operates in the 2.4Ghz and 5Ghz frequency bands. Since it’s digital and has sophisticated error correction, other devices using the same frequency usually don’t impact performance noticeably.
However, you may want to eliminate interference as an issue by unplugging Bluetooth devices (which are also 2.4Ghz) and moving away from devices like microwave ovens. Switching bands on your router may also improve stability.
Is There Channel Competition?
All WiFi systems operate at the same frequencies, so why don’t they clash with each other? The answer is that they use “channels”, which break up the main frequency into small, narrow channels.
There are 11 and 45 channels on the 2.4Ghz and 5Ghz frequencies respectively. So, usually, your neighbor’s router will automatically use a channel that doesn’t have anything else happening on it. However, a router can have its channel manually set or that, for some other reason, there’s just too much competition to find a good channel. Channels 1,6 and 11 are popular choices for the 2.4Ghz band because they don’t overlap.
You can use a WiFi analyzer app on your smartphone or computer to see which local WiFi networks are using which channels and then set your router to use a relatively uncontested one.
Does It Happen After Waking From Sleep?
Mac users often encounter a situation where WiFi doesn’t reconnect properly after waking from sleep mode. The good news is that there is a pretty reliable way to resolve the issue.
- First, go to the Apple menu, System Preferences, and then Network.
- Click on Advanced. Here you’ll see a list of preferred networks.
- Select them all with Command + A and then click the minus button to remove them all.
- Now back out to the Network window from before. Click on the Locations dropdown menu and then click on the plus icon. Name a new location and click Done.
Now all you have to do is reconnect to the WiFi, and from now on there should no longer be an issue connecting to the network after waking from sleep.
Forget The Network
If you find that you can’t connect to a network, even though it has worked before, the solution is often simply to forget that network and then reconnect to it.
If you read the wake from sleep solution above, you already know how to do this. The only difference is that you’ll only select a single network, instead of the entire list as we did above.
No More Disconnection Anxiety
Dealing with the MacBook Pro dropping wireless connection can be aggravating. Especially so if you are used to your MacBook Pro otherwise working flawlessly. With a little luck, some trial and error, and a small prayer to the Mac gods, you’ll hopefully now have full access to WiFi again.
