How to fix Yosemite WiFi problem on your own

Apple's latest version of desktop OS OS X Yosemite is accepted faster than the previous version, but that doesn't mean that all users are satisfied with its experience. Some users have been reported to have experienced many Wi-Fi problems during the upgrade, including disconnected, unreachable, or slow speeds. However, it is not difficult to solve these problems, this article will introduce several simple solutions.

First, the most straightforward way to solve Yosemite Wi-Fi problems is to install the system completely on the Mac instead of upgrading from Mavericks. At the same time, there is a way to solve the problem of Wi-Fi connectivity, without the need to reload the system so cumbersome. The specific steps are:

　　Removing network configuration and preference files

Manually removing the network plist file is the first step in solving the problem, which is the primary way to solve Wi-Fi problems for almost all OS X versions. This is especially useful if the promotion causes the preference file to not function correctly. The specific mode of operation is:

1. Turn off Wi-Fi in wireless menu items

2. Execute the Command+shift+g shortcut key in the Finder and enter the path "/library/preferences/systemconfiguration/"

3. Select the following 5 files in the open folder

Com.apple.airport.preferences.plist

Com.apple.network.identification.plist

Com.apple.wifi.message-tracer.plist

Networkinterfaces.plist

Preferences.plist

4. Back up the files to another directory and delete them

5. Restart Mac

6. Turn on Wi-Fi

The steps above will force OS X to re-establish all network profiles, so this step alone should solve your problem. But if this doesn't work, you can try the second step.

　　Create a new Wi-Fi network location and customize DNS

This step is primarily to allow you to create a new network location, while making its configuration parameters different from the default. First, we will use the new network setup, and then set up our own DNS instead of waiting for the system to get DNS details from the router. Finally, we set a custom MTU value that is slightly smaller than the default, which reduces the chance that the router will reject it.

1. Enter System Preferences and choose "Network"

2. Select "Edit Location" from the "position" drop-down menu and click the Plus button to name the new Wi-Fi.

3. Add Wi-Fi as usual

4. Click the "Advanced" button and go to the "DNS" tab.

5. Click the plus key and then make a DNS server

7. Go to "Hardware" tab, click "Configure" and select "Manual"

8. Click on the MTU and change it to "custom", then enter 1453 and click OK.

8. Click "Execute"

Quit setting up and run any applications that require a network connection, such as Safari, information, or mail, and your network connection should have been restored.

　　A little extra trick.

Here are some other less-than-ideal solutions

1, join 2.4GHz Network---------some users say 2.4GHz network is not a problem

2, the router's 5GHz channel set to 50-120

3, turn off Bluetooth-some users said that the disabled Bluetooth can solve the Wi-Fi problem, but this for those who have Bluetooth peripherals is obviously not suitable for Mac users