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How to Fix macOS Big Sur Wi-Fi Connectivity Issues
Edited 5 months ago by ExtremeHow Editorial Team
macOSTroubleshootingWi-FiNetworkConnectivityInternetAppleComputerOperating SystemMacBook
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macOS Big Sur is an incredible operating system developed by Apple Inc. Although it has introduced many new features, such as improved design and improved system performance, some users have encountered problems related to Wi-Fi connectivity after upgrading to Big Sur. Here, we will go into detail about understanding and resolving common Wi-Fi problems on macOS Big Sur. We will cover the nature of the problems, causes, and practical solutions step-by-step to assist users at all levels of troubleshooting proficiency.
Understanding Wi-Fi connectivity problems
Wi-Fi connectivity problems can come in many forms - and can be frustrating. Some users have reported intermittent connectivity, slow speeds, lost connections or the inability to connect to a Wi-Fi network. These problems can arise from a number of sources, including software glitches, out-of-date drivers, network settings misconfiguration or even router-based issues.
Step-by-step solution
1. Restart your router and Mac
The simplest but often effective solution to solving Wi-Fi connectivity problems is to restart both your router and Mac. Restarting helps clear temporary glitches that may be disrupting your network connection. First, turn off your router, wait for about 30 seconds, and then turn it back on. Once the router has fully restarted, restart your Mac by clicking the Apple logo in the upper-left corner, choosing "Restart," and confirming when prompted.
2. Forget the Wi-Fi network and reconnect to it
If restarting your device did not resolve the issue, you can try forgetting the problematic Wi-Fi network and reconnecting to it. This procedure may resolve any issues caused by incorrect network configuration:
Go to the Apple menu and choose "System Preferences." Click "Network," then select "Wi-Fi" on the left panel. Click "Advanced" and select the Wi-Fi network you're having trouble with in the list. Click the minus sign (-) to remove it. After removing the network, click "OK" and then "Apply." Now, reconnect to your Wi-Fi network by selecting it from the Wi-Fi menu and entering the password when prompted.
3. Update macOS and Wi-Fi drivers
Software and driver updates are important, especially when they include bug fixes and performance improvements. Apple periodically releases updates for macOS, which may include fixes for known issues related to wireless connectivity.
To update your macOS, go to the Apple menu and choose "System Preferences." Click "Software Update." If an update is available, click "Update Now" to begin the process. It's also important to make sure your hardware is up to date, including the Wi-Fi adapter's driver. System updates usually include driver updates, so it's important to keep your macOS up to date.
4. Reset network preferences
Resetting macOS network preferences can sometimes fix any corrupted or incorrect settings that cause Wi-Fi problems. Before proceeding, it is important to note that this will erase all your existing network settings, so make sure you remember your network configurations.
To reset Network preferences, open Finder and press Command + Shift + G Enter /Library/Preferences/SystemConfiguration/ in the dialog box and click "Go." In this location, locate the following files and move them to the Trash:
com.apple.airport.preferences.plistcom.apple.network.identification.plistcom.apple.wifi.message-tracer.plistNetworkInterfaces.plistpreferences.plist
After deleting these files, restart your Mac. Your system will recreate these files with default values, which will likely solve your Wi-Fi problems.
5. Check the router settings
Routers have a variety of settings that can affect connectivity. Make sure your router firmware is up to date, as manufacturers release updates to improve performance and fix problems. Also, check for channel interference from neighboring networks.
Most routers support multiple channels, and overcrowded channels can cause poor performance. Use your router's web interface (often accessed by typing the router's IP address into a web browser) to change the Wi-Fi channel. Choose a less crowded channel.
6. Adjust macOS Wi-Fi settings
Adjusting some settings on your Mac can also improve Wi-Fi performance. Open "System Preferences", choose "Network", and make sure your Wi-Fi network is at the top of the list in "Preferred Networks".
Additionally, try creating a new network location. To do this, go to "System Preferences," select "Network," and click the dropdown menu next to "Locations." Select "Edit Locations," then click the plus sign (+) to add a new location. Save the location with a different name and configure it accordingly.
7. Use Wireless Diagnostics
macOS provides a tool called Wireless Diagnostics that helps diagnose Wi-Fi problems. To access it, press and hold the "Option" key, then click the Wi-Fi icon in the menu bar. Select "Open Wireless Diagnostics."
This tool will guide you through several steps and generate a diagnostic report at the end. It analyzes your network connection and suggests solutions based on the problems identified.
8. Reset SMC and PRAM
If none of the above solutions resolve the issue, consider resetting the System Management Controller (SMC) and PRAM (Parameter Random Access Memory). These components manage many low-level functions of your Mac, including power and system settings.
For an Intel-based Mac, here are the steps:
- To reset the SMC, shut down your Mac. Once it's off, press and hold the left "Shift" key, the "Ctrl" key, the "Option" key, and the power button simultaneously for about 10 seconds. Release all keys and the power button, then turn on your Mac.
- To reset the PRAM, restart your Mac and hold down the "Option", "Command", "P", and "R" keys simultaneously right after you hear the startup sound. Keep holding them for 20 seconds.
9. Contact Apple Support
If all troubleshooting steps fail and Wi-Fi problems persist, it is advisable to contact Apple Support or visit an Apple Store. The problem may result from a hardware defect or a rare software anomaly that requires professional assistance. Apple Support can provide detailed guidance and possible repair options.
Conclusion
Wi-Fi connectivity problems in macOS Big Sur can be a frustrating interruption in an otherwise seamless user experience. By following the steps above, you can systematically identify and resolve common problems affecting your network connection. Remember, keeping your macOS and router's firmware updated is essential to maintaining optimal performance.
In the digital age, having a reliable internet connection is crucial, and navigating through these troubleshooting steps ensures that you get a stable and effective network link on your macOS Big Sur system. If all else fails, don’t hesitate to seek professional assistance for further diagnosis and resolution.
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