How to Solve Wi-Fi Woes After Updating to macOS Catalina

If you‘ve recently updated your Mac to macOS Catalina (version 10.15), you might have noticed some frustrating changes with your Wi-Fi connection. Many users are reporting issues like frequent disconnects, slow speeds, or the inability to connect to Wi-Fi networks at all after upgrading to Catalina.

You‘re not alone in your wireless woes. Hundreds of users on Apple support forums and Reddit threads have vented about losing their Wi-Fi connections multiple times per day, with the problem seemingly starting as soon as they‘ve installed Catalina. For some, the Wi-Fi icon in the menu bar has an exclamation mark and says "No Internet Connection" – even when other devices on the same network are working fine.

The wave of Wi-Fi complaints suggests there‘s a widespread bug in Catalina wreaking havoc on Mac users‘ wireless connectivity. Fortunately, you can try several troubleshooting techniques to resolve Wi-Fi problems and get your Mac reliably online again. I‘ll walk you through the most effective fixes, starting with the simplest solutions to more advanced methods.

Check for a macOS Update First

Before trying any manual fixes, your first step should be to make sure your Mac is running the latest version of macOS Catalina. Apple is quick to patch major bugs, so if there‘s a known Wi-Fi glitch, there‘s a good chance a new point release has already squashed it.

To check for macOS updates:

1. Click the Apple menu in the top-left corner of your screen.
2. Select "System Preferences."
3. Click "Software Update."
4. If an update is available, click "Update Now" or "Upgrade Now." You may need to restart your Mac to complete the installation.

After updating, try connecting to your Wi-Fi network again. If it works – great! If not, it‘s time to roll up your sleeves and dive into more in-depth troubleshooting.

Reset Your Wi-Fi Hardware and Preferences

Resetting your Wi-Fi hardware and preferences is like giving your network settings a hard reboot, which can clear up temporary bugs and connection issues.

Here‘s how to reset NVRAM or PRAM, which stores data like your Wi-Fi passwords:

1. Shut down your Mac completely.
2. Press the power button, then immediately hold Option + Command + P + R.
3. Keep holding until your Mac restarts and you hear the startup chime a second time, then release the keys.

To remove and re-add your Wi-Fi service:

1. Open System Preferences.
2. Click "Network" and select "Wi-Fi" in the left sidebar.
3. Click the minus (-) button at the bottom to remove Wi-Fi.
4. Click Apply to save the changes.
5. Now click the plus (+) button and select "Wi-Fi" from the Interface dropdown.
6. Click "Create" to re-add Wi-Fi, then click Apply again.

By removing and restoring Wi-Fi from your Network settings, macOS has to rebuild your Wi-Fi configuration from scratch. Any corrupted or misconfigured files that could be causing connection issues are wiped out.

Try reconnecting to your Wi-Fi network now. According to iMore, resetting NVRAM and re-adding the Wi-Fi service are the "first things you should try" to resolve Catalina connection woes.

Create a New Network Location Profile

If your Wi-Fi is still unreliable or not working at all, the next step is to create a fresh Network Location profile. This is similar to re-adding the Wi-Fi service, but creates an entirely new collection of network preferences.

Here‘s how in macOS Catalina:

1. Go to Apple menu > System Preferences > Network.
2. From the Location dropdown at the top, choose "Edit Locations…"
3. Click the plus (+) button to create a new location.
4. Give it a name like "New Wi-Fi" or "Wi-Fi Test" and click Done.
5. Click Apply to save your new location, which macOS will switch to automatically.

Now try connecting to your preferred Wi-Fi network. In my experience, this fix usually does the trick when Macs start having flaky connection issues after a major macOS update. Your Wi-Fi problems will poof disappear in the new Network Location.

Why does creating a new location help? Think of it like changing rooms in a house. If your bedroom is messy and cluttered, moving to a clean room next door lets you start fresh without inheriting any junk. Similarly, a new Network Location lets you connect to Wi-Fi with default settings, versus your existing profile that may have picked up bugs or glitches.

If your Wi-Fi works great in your new location, feel free to switch back to "Automatic" and the fixes should stick. Or just use your new custom location as your standard Wi-Fi setup going forward.

Reboot Your Router and Modem

Your Mac might not be the only piece of hardware that needs a refresh after updating to macOS Catalina. If your Wi-Fi connection is still giving you grief, your router and modem may be confused by your Mac‘s new network settings.

To rule out your networking equipment as the culprit:

1. Unplug your router and modem from power. If you have an all-in-one gateway, just unplug that.
2. Wait at least 30 seconds, then plug your modem back in first. Wait until all the lights turn on and it‘s fully booted.
3. Plug your router back in and wait for it to boot up completely.
4. On your Mac, turn Wi-Fi off and back on, then try connecting to your network again.

I recommend resetting your router and modem if you‘ve already tried creating a new Network Location to no avail. Sometimes a router can "lock on" to your Mac‘s old Wi-Fi settings, creating a tug-of-war with the new macOS configurations. A hard reset wipes the router‘s memory so it will accept your Mac‘s new network preferences.

Still Stuck? It‘s Time to Escalate

If you‘ve worked through all the steps above and your Wi-Fi connection is still unreliable, there are a few more rabbits you can pull out of your hat:

• Reboot your Mac in Safe Mode to test if a startup program, plugin, or system extension is interfering with Wi-Fi.
• Create a new macOS user account and test Wi-Fi connectivity. If the new account has no issues, it‘s likely a problem with your original user account settings.
• Try connecting to a different Wi-Fi network, like a coffee shop or mobile hotspot, to isolate if the issue is your Mac or your primary network.
• For advanced users, you can try deleting excess Wi-Fi networks stored in macOS Catalina to eliminate any potential conflicts.

If you‘re still dead in the water after exhausting all the troubleshooting tricks, make a Genius Bar reservation or call Apple Support (1-800-MY-APPLE). They can do more in-depth diagnostics to pinpoint hardware issues or hard-to-identify software bugs.

Workarounds to Keep Your Mac Online

While you‘re sorting out your Wi-Fi drama, you can use other methods to connect your Mac to the internet in a pinch:

Tethered iPhone Hotspot

• Connect your iPhone or cellular iPad to your Mac with a Lightning cable.
• On your iOS device, go to Settings > Personal Hotspot and flip the switch on.
• On your Mac, open System Preferences > Network and select "iPhone USB" from the list on the left.
• Click Connect and you should now be online!

Employ a Powerline Adapter

• A powerline adapter kit uses your electrical wiring to extend your router‘s network connection through wall outlets.
• Plug one powerline unit into an outlet near your router and connect it with an ethernet cable.
• Plug the second unit into an outlet near your Mac, then use a second ethernet cable to connect your Mac.
• Configure the adapters (a quick process) and your Mac will now have a wired internet connection.

Share a Connection From Another Computer

• If you have a second computer that gets a strong, stable Wi-Fi signal, you can share its connection with your Mac.
• On a Mac, go to System Preferences > Sharing and enable Internet Sharing.
• On a Windows PC, go to Settings > Network & Internet > Mobile hotspot and turn sharing on.
• Connect the two computers with an ethernet cable or use Bluetooth/Wi-Fi for a wireless link.

While these workarounds are a bit of a hassle compared to normal Wi-Fi, they‘ll at least let you hop online and accomplish critical tasks while you work on a permanent solution.

Wrapping Up

Losing your Wi-Fi connection is never fun, but it‘s especially frustrating when it happens along with a major macOS update like Catalina. I hope walking through these troubleshooting steps has helped you narrow down and resolve your Wi-Fi issues so you can enjoy a smooth, stable internet connection again.

In my experience, creating a new custom Network Location is the most reliable way to give your Mac‘s Wi-Fi a clean slate after an operating system update. But if your wireless woes persist, more drastic measures like resetting your router, testing in Safe Mode, or contacting Apple support may be necessary.

Do you have another suggestion for fixing disappearing Wi-Fi after upgrading to macOS Catalina? Or did one of the techniques here do the trick for you? Let me know in the comments!