How to Fix Slow Internet Problems After macOS Sierra‎ Update?

It’s hard to stay away from upgrading your Mac computer to the latest version of macOS Sierra. There are many cool features and a redesigned interface that every Mac users should experience.

After updating, it was evident that my Wi-Fi was slower than usual and updating to macOS Sierra definitely caused this problem. Even some static pages take forever to load.

After doing some research, we found a solution to the slowness of my Wi-Fi. If this happens to you in macOS Sierra, try the following.

1. Turn off your Wi-Fi completely
2. Create a new folder on your desktop and name it
3. Open your Finder (the smiley face icon on the dock) and press Command + Shift + G. All three keys at the same time
4. This will pull up Go To Folder. From there type in: /Library/Preferences/SystemConfiguration/
5. Look for the following files: com.apple.airport.preferences.plist, com.apple.network.identification.plist, com.apple.wifi.message-tracer.plist, NetworkInterfaces.plist, preferences.plist
6. Copy and paste them to the folder you created in Step 2
7. Then delete those .plist from the SystemConfiguration

One more step before you’re done. Restart your Mac computer. Once it’s rebooted, connect to your Wi-Fi again. My internet connection went back smoothly. If you continue to encounter slow Wi-Fi connection, visit a nearby Apple Store for further assistant.