![]() In the Extensions Folder, you should see: With a Finder window open, go to the menu bar at the top of your screen and select Go.A couple of places you can check are /Library/Extensions and /Library/DriverExtensions. Software that is unneeded should be removed. The software may not be compatible with macOS Big Sur, or you may need to update it. Third-party software may be interfering with your ability to use your Wi-Fi network. See also: How To Fix Slow Wi-Fi Problems On Your Macbook Check Third-Party Software Hold all keys for 10 seconds, then release.Press and hold the power button, without releasing the other 3 keys.Press and hold 3 keys: Shift, Control and Option.To reset the SMC, Shutdown/power off your MacBook.Power on your Mac and immediately press and hold 4 keys: Option, Command, P and R.See also: How To Exit Safe Mode If Stuck Reset NVRAM and PRAM Power on your Mac and immediately press and hold Shift until you see the login window.See also: Mac Wi-Fi Connected But No Internet Access Intel Processor Press and hold the Shift key, click Continue in Safe Mode, then release the Shift key.Press and hold the power button until you see the startup options window.If this is the case, see the Check Third-Party Software section below. If your Wi-Fi network connection works in Safe Mode, you likely have some third-party software causing problems. It also does a basic check of your disk, and deletes some caches. Safe Mode can be helpful when trying to diagnose problems you are having on your Mac. See also: How To Forget Wi-Fi Networks On Mac Try Booting in Safe Mode Wait a couple of minutes to give it time to fully boot up. Enter your admin password and follow the onscreen instruction.While holding the Option key, click the Wi-Fi icon from the menu bar.Connect to Wi-Fi if possible even though there is no Internet.See this article if you are having issues closing apps. Run the Wireless Diagnostics tool to test your connection. See also: My Mac Stopped Seeing My Wi-Fi Network, Fix Wireless Diagnostics Go to System Preferences > Software Update to look for available updates. If an update has come out since your upgrade to Big Sur, it may contain bug fixes that can cure your problem. In this article, we will outline some troubleshooting steps to fix your network issues. Some users reported Wi-Fi problems after upgrading to Catalina. We have seen Wi-Fi connectivity issues after a macOS upgrade before. Your freshly upgraded Mac may be having trouble with your Wi-Fi, while your other devices seem to have no issues. For some users, the connection drops frequently and is unreliable. After installing the macOS Big Sur upgrade, some users are reporting trouble with their Wi-Fi.
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