How to restore network connection on Mac

How to restore network connection on Mac


Apple Macs and MacBooks are really beautiful computers to look at and place in the office or on our desk, but also, in their beauty and perfection, they are still computers, so they can stop working and may have connection problems. more or less simple to solve.

If we notice on our Mac that the Internet connection comes and goes, the web pages do not open correctly or the applications that use Internet services (such as VoIP or video conferencing applications) do not work as they should, you have reached the appropriate guide: here in fact we will find all the methods, simple and fast to apply even for a novice user, to restore network connection on Macso you can get back to the download and upload speeds you saw before the problem occurred and go back to work or study on your Mac like nothing happened.

READ ALSO: Solutions for router and wifi connection problems


    How to restore Mac connection

    To restore the connection on the Mac we will show you both the diagnostic tools present in the macOS operating system as immediately ready to use and some expert tricks to make the Internet connection work again as if we had started the Mac for the first time.

    Use wireless diagnostics

    If the connection problem occurs when we are connected to a Wi-Fi network, we can test with the tool Wireless diagnosis provided by Apple itself. To use it, make sure you are connected to a Wi-Fi network, press and hold Option (Alt), let's go to the Wi-Fi status menu in the upper right and press Open wireless diagnostics.

    We enter the credentials of the administrator account, then we wait for the tool to carry out its checks. Depending on the result, a window may open with some suggestions to follow, but a summary window of the operations performed by the Mac to restore the connection may also appear. If the problem is intermittent (the line comes and goes), a window similar to the following may also appear.

    In this case it is advisable to activate the voice Control your Wi-Fi connection, to leave the task of checking the connection to the Mac, so that it can intervene in case of problems. Opening the article Go to summary instead, we'll get a summary of information about our network and some helpful tips for applying.

    Change DNS

    DNS is an important service for the Internet connection and, even if the line works perfectly and the modem is connected, it is enough that this service shows a malfunction (for example, due to a blackout of the operator's DNS) to avoid the connection at all times. website.

    To check if the problem relates to DNS, open the menu Wi-Fi O Ethernet in the upper right, click the item Open network preferences, let's go to the active connection right now, click on Advanced and finally go to the screen DNS.

    We will basically see the IP address of our modem or router, but we can add a new DNS server by pressing the + icon at the bottom and typing (Google DNS, always up and running). Then we delete the old DNS server present and press at the bottom on Okay, to use only the server chosen by us. To know more we can also read our guide How to change DNS.

    Delete network settings and preference files

    If Wireless Diagnosis and the DNS change have not resolved the connection problem, we can try to erase the network configurations present in the system, in order to repeat the access to the Wi-Fi network used until now. To continue, turn off the currently active Wi-Fi connection (from the upper right Wi-Fi menu), open the Finder in the Dock bar at the bottom, go to the menu O, we are going to open Go to folder and we write the following path.

    / Library / Preferences / System Settings

    Once this folder opens, delete or move the following files to the Recycle Bin on Mac:

    • NetworkInterfaces.plist
    • preferences.plista

    We delete all the files, then restart the Mac for the changes to take effect. Upon reboot, we try to connect to the offending Wi-Fi network again, to check if the connection is working smoothly.

    Other useful tips

    If we don't resolve this, we need to investigate further, as there could be an issue that doesn't directly affect the Mac but involves the modem / router or the type of connection we use to connect to it. To try to fix it, we also tried the tips given in the following list:

    • Let's restart the modem- This is one of the simplest tips, but it could definitely solve the problem, especially if other devices connected to the same network also had similar problems to Mac. A restart will allow you to quickly restore the connection without having to do anything else.
    • We use a 5 GHz Wi-Fi connection- All modern Macs have a dual-band connection and it is preferable to always use the 5 GHz band, less prone to interference with nearby networks and significantly faster in any scenario. To learn more we can read our guide Differences between 2,4 GHz and 5 GHz Wi-Fi networks; which is better?
    • We use the Ethernet connection: another quick method to understand if the problem is that the Wi-Fi connection involves the use of a very long Ethernet cable, so that you can connect the Mac to the modem even from different rooms. If the connection works, the problem is with the Wi-Fi module of the Mac or the Wi-Fi module of the modem, as also seen in the guide. Solutions for router and wifi connection problems.
    • We eliminate Range Extender or Powerline: If we connect the Mac through Wi-Fi Extender or Powerline, we try to eliminate them and connect directly to the modem network or use an Ethernet cable. These devices are very useful, but they can overheat over time and block your internet connection until they are removed and reconnected after a few minutes.


    Applying all the tips presented in this guide we can solve most Mac connection problems by ourselves, without having to call a computer technician or turn on other equipment and go crazy among a thousand complex and difficult to follow guides in the Web.

    If, despite the advice in the guide, the network connection does not work on the Mac, there is nothing left to do but start a recovery procedure after saving personal files to a USB external drive; to proceed with the restoration just read our guides How to fix Mac, fix macOS problems and errors mi 9 ways to restart your Mac and restore proper startup.


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