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internet stops working every time I turn on MacBook

Every time I turn on my MacBook, my Internet does not work anymore. The problem solves itself by restarting my router, but I know the problem is not with my router because all other devices I have connected to it, have no problem with the connectivity or with Internet.

MacBook Air 13", macOS 10.14

Posted on Apr 16, 2019 12:18 AM

Reply
Question marked as Best answer

Try the following on your Mac in order, until (hopefully) resolved:


1. Create a New User Account

○ System Preferences > Accounts

○ Click "+" to add a new account.

○ Log off, and then, log back on with the new user account.

○ Try connecting to a Wi-Fi network with your Mac's AirPort.

○ If this resolves the problem, there may be something amiss with your current profile and will require further troubleshooting.

○ If this does not resolve the problem, go ahead and log back into your normal account and go on to the next step.

2. Delete AirPort Keychain Entries

○ Launch the "Keychain Access" application, located in Applications/Utilities.

○ In the left-side window, select "login" under Keychains and "Passwords" under Category.

○ Click on the "Kind" filter at the top and look for any "AirPort network password" entries...and delete them.

○ Close Keychain Access.

3. Delete & Add Back Preferred Network(s)

○ System Preferences > Network > Wi-Fi > Advanced > Wi-Fi tab

§ Delete all entries under "Preferred Networks."

§ Click on OK.

○ System Preferences > Network > Wi-Fi > Advanced > Wi-Fi tab

§ Add the preferred network(s) using the "+" button.

§ Click on OK.

○ Restart or log out, and then, back in.

§ If it works, then you are done.

§ If not, go on to the next step.

4. Move System Configuration Files

○ Quit any applications that are currently using Wi-Fi.

○ Turn off Wi-Fi from the Wi-Fi icon on the macOS menu bar.

○ Open Finder > Go > Go To Folder

§ In the "Go to the folder" window, enter:/Library/Preferences/SystemConfiguration/

§ Click on Go

○ Locate and select the following files:Note: Files are macOS version specific, not all the following files are used in each version.

§ com.apple.airport.preferences.plist

§ com.apple.network.eapolclient.configuration.plist

§ com.apple.wifi.message-tracer.plist

§ NetworkInterfaces.plist

§ preferences.plist

○ Move any matching files to the macOS Desktop. You can place them all in a folder as a backup. The "missing" files will be rebuilt after restarting the Mac.

○ Reboot the Mac.

○ Re-enable Wi-Fi from the Wi-Fi icon on the macOS menu bar.

Try accessing the Internet again.

Posted on Apr 16, 2019 12:41 PM

1 reply
Question marked as Helpful

Apr 16, 2019 11:40 AM in response to beatriz37

In other words, when you wake up your MacBook it isn't connected to the Internet and the only way you can reconnect is to reset the router. The first thing I'd try is this: Turn off WiFi on the MacBook. On the MacBook open System Preferences, select Network, click on WiFi in the left window Pane, and then click on the Advanced button. You'll see a list of WiFi points you've connected to. Delete them all. Click on Okay. Then click on the Apply button.


Turn WiFi back on and see if you can connect. If not, open Network again, select WiFi and click on Advanced. This time click on the TCP/IP button. Make sure Using DHCP is selected. Now click on the Renew DHCP Lease. If you still cannot connect (sigh) reset the router. Give it type to cycle and then click on Renew DHCP Lease again. When you are connected click on Okay and then Apply. Try sleeping and waking up.


If this doesn't work....I scream 😫

4 replies

Apr 16, 2019 10:54 AM in response to dwb

No, I mean that when I turn on my MacBook, the internet connection is not working but only on my Mac. I try to turn off and on Wifi, I tried to reconnect with my network, but the only thing that solves the problem is reiniciating my router. But, again, on all other devices, internet works just fine with exactly the same connection.

Question marked as Helpful

Apr 16, 2019 11:40 AM in response to beatriz37

In other words, when you wake up your MacBook it isn't connected to the Internet and the only way you can reconnect is to reset the router. The first thing I'd try is this: Turn off WiFi on the MacBook. On the MacBook open System Preferences, select Network, click on WiFi in the left window Pane, and then click on the Advanced button. You'll see a list of WiFi points you've connected to. Delete them all. Click on Okay. Then click on the Apply button.


Turn WiFi back on and see if you can connect. If not, open Network again, select WiFi and click on Advanced. This time click on the TCP/IP button. Make sure Using DHCP is selected. Now click on the Renew DHCP Lease. If you still cannot connect (sigh) reset the router. Give it type to cycle and then click on Renew DHCP Lease again. When you are connected click on Okay and then Apply. Try sleeping and waking up.


If this doesn't work....I scream 😫

Question marked as Best answer

Apr 16, 2019 12:41 PM in response to beatriz37

Try the following on your Mac in order, until (hopefully) resolved:


1. Create a New User Account

○ System Preferences > Accounts

○ Click "+" to add a new account.

○ Log off, and then, log back on with the new user account.

○ Try connecting to a Wi-Fi network with your Mac's AirPort.

○ If this resolves the problem, there may be something amiss with your current profile and will require further troubleshooting.

○ If this does not resolve the problem, go ahead and log back into your normal account and go on to the next step.

2. Delete AirPort Keychain Entries

○ Launch the "Keychain Access" application, located in Applications/Utilities.

○ In the left-side window, select "login" under Keychains and "Passwords" under Category.

○ Click on the "Kind" filter at the top and look for any "AirPort network password" entries...and delete them.

○ Close Keychain Access.

3. Delete & Add Back Preferred Network(s)

○ System Preferences > Network > Wi-Fi > Advanced > Wi-Fi tab

§ Delete all entries under "Preferred Networks."

§ Click on OK.

○ System Preferences > Network > Wi-Fi > Advanced > Wi-Fi tab

§ Add the preferred network(s) using the "+" button.

§ Click on OK.

○ Restart or log out, and then, back in.

§ If it works, then you are done.

§ If not, go on to the next step.

4. Move System Configuration Files

○ Quit any applications that are currently using Wi-Fi.

○ Turn off Wi-Fi from the Wi-Fi icon on the macOS menu bar.

○ Open Finder > Go > Go To Folder

§ In the "Go to the folder" window, enter:/Library/Preferences/SystemConfiguration/

§ Click on Go

○ Locate and select the following files:Note: Files are macOS version specific, not all the following files are used in each version.

§ com.apple.airport.preferences.plist

§ com.apple.network.eapolclient.configuration.plist

§ com.apple.wifi.message-tracer.plist

§ NetworkInterfaces.plist

§ preferences.plist

○ Move any matching files to the macOS Desktop. You can place them all in a folder as a backup. The "missing" files will be rebuilt after restarting the Mac.

○ Reboot the Mac.

○ Re-enable Wi-Fi from the Wi-Fi icon on the macOS menu bar.

Try accessing the Internet again.

internet stops working every time I turn on MacBook

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