Resetting your network settings on macOS should be a last resort. This process will clear all of your currently saved wireless networks from your computer. It can, however, be a useful troubleshooting step for troublesome wireless networks that won't seem to connect.
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Before you clear the network settings, be sure to disable Wi-Fi on the machine you're using. Click the wireless icon in the menu bar, and choose Turn Wi-Fi Off from the menu.
Open Finder and then type Command+Shift+G to open the following directory:
Ash/Library/Preferences/SystemConfiguration/
In the SystemConfiguration folder, locate and delete the following files:
You can delete the files by right-clicking on the file name and clicking Move to Trash.
If you want to avoid any issues, you can always make a backup of these files. When you're ready to clear your network settings, delete the files.
Empty the trash to totally purge the old files. Restart your machine. When it boots again, reenable Wi-Fi using the Wi-Fi icon in the menu bar.
If you're still having trouble, check out our guide on how to flush DNS on macOS.
If you are new to Mac, or simply don't consider yourself tech-savvy, you may be struggling to do some of the everyday tasks necessary to use your Mac.
