Wifi Problem MBA

Hello sir, I am Rishi Kapoor. I am form Chandigarh. I want you to help me by providing me with the procedure to fix the Wifi problem in my MacBook.

[Raman Vij]

As you have asked about the procedures to fix the Wifi Problem in MacBook, I am giving you some information regarding that
1: Remove Network Configuration & Preference Files

Manually trashing the network plist files should be your first line of troubleshooting.

Turn Off Wi-Fi from the Wireless menu item
From the OS X Finder, hit Command+Shift+G and enter the following path:

/Library/Preferences/SystemConfiguration/

Within this folder locate and select the following files:

com.apple.airport.preferences.plist

com.apple.network.identification.plist
com.apple.wifi.message-tracer.plist

NetworkInterfaces.plist

preferences.plist

Move all of these files into a folder on your Desktop
Reboot the Mac
Turn ON WI-Fi from the wireless network menu again

2. Create a New Wi-Fi Network Location with Custom DNS

Open the  Apple menu and go to System Preferences, then choose “Network”

Pull down the “Locations” menu and choose “Edit Locations”, then click the [+] plus button, give the new network location a name like “Yosemite WiFi” then click Done

Next to “Network Name” join your desired wifi network as usual

Now click the “Advanced” button, and go to the “DNS” tab

Click the [+] plus button and specify a DNS server – we’re using 8.8.8.8 for Google DNS in this example but you should use the fastest DNS servers you can find for your location, it will vary. You can also use your own ISP DNS servers

Now go to the “Hardware” tab and click on ‘Configure’ and choose “Manually”

Click on MTU and change it to “Custom” and set the MTU number to 1453 (this is a networking secret from ancient times, and yes it still works!), then click on “OK”

Now click on “Apply” to set your network changes