10 Fixes WiFi not working on Mac after macOS Catalina/ Mojave Update: MacBook Pro, Air, iMac, Mac Mini

WiFi not working on Mac yosemite and Mavericks

Related your Wifi connectivity issue on your Mac device here are the top best possible solutions work all time when you can’t turn or enable wifi from your Mac running on macOS Catalina, OS X Mojave, High Sierra, Sierra, EI Capitan, Yosemite, Mavericks and any other or after updating your OS X. in the case when you turn Wifi and showing black triangle outline of the shape and not turning on, Mostly Wifi issues got user on OS X version 10.13, 10.14, 10.15 or Other OS version. Are you one of them? Your home and office Wifi not working on Mac but other devices working very well then just try the below steps perfectly.

Mac WiFi Won’t connect to the public Wireless network or Personal Hotspot. There should be network error and Hardware fault in rare cases.

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WiFi not working on Mac yosemite and Mavericks

The fixed solution on WiFi not working on Mac OS X: Solutions

Check Hands-on Video To Fix macOS Catalina WiFi Issues & Earlier Mac OS X

Exclamation mark point issues on WiFi symbol on Top Menu

Renew or Get a new DHCP Lease address that refreshes or creates a new connection with a new ipv4 address, Subnet Mask and Router. Follow the below steps to fix if your Mac is Dropping or Unable connect WiFi network.

  1. Go to the Apple Menu on Mac. Next Click on the System Preference option.
  2. Here’s go to Network option, First is WiFi in the left panel or popup windows. After connecting if you are getting an exclamation mark, Keep Selected WiFi.
  3. Now, Find the Advanced.. option there, Go to TCP/IP section from above multiple tabs.
  4. here’s you will see three IP addresses if no IP address then assigns manually to your Mac. by Click on Renew DHCP Lease.
  5. Now, Try to Connect the Same wifi after disconnected.

WiFi issues are the same after making the changes in IP Address

Remove/Delete WiFi Profile on Mac’s Network Settings & Add WiFi Profile

  1. Delete WiFi network Profile from Network System Preference. Remove the WiFi network and Add again,
  2. Go to the Apple Menu on Mac > System Preference > Network > Now, Select & highlight WiFi Profile > Click on Minus sign to remove from the list [minus sign is available in the same panel] > Apply.
    Add a New WiFi Profile again, Click on “+” sign and select WiFi from the list of Interface dropdown. and Give a WiFi Name. and click on the Create button.
  3. Now Click on advanced Button.
  4. Select TCP/IP Tab, and click on the Renew DHCP Lease button to get updated ipv4 Address, Subnet Mask, Router address.
  5. Now Move to DNS Tab, and Click on Plus Sign to add new Google IP address, 8.8.8.8 and again click on plus to Ann second IP, 8.8.4.4.
  6. Now Move to Hardware Tab, Configure to Manually, And MTU set Custom, and Enter 1453. Now Tap on Apply to save the changes.

Sometimes this WiFi Profile Update, Also Fix Auto Disconnecting WiFi from Mac.

Delete and Add WiFi Profile on Mac if WiFi not working

Now Turn off WiFi from Top Mac WiFi Menu, and Turn on Again.

Now Follow the Other Most Common WiFi Problems that you fix after that.

  • Restart Your Mac [Apple logo > Restart or Use the Power button on Mac]
  • Go with Network Diagnostics [Apple Logo > System Preferences > Network > WiFi > Select Active WiFi Network].
  • Restart your Router [Turn off the power supply and Turn on-again, Wait for 2 minutes and Try to connect WiFi again].
  • Test Google.com in Different Browser.

Find our More Cases and Troubleshooting guide that really fix WiFi issues on Mac after Update or install macOS Mojave or macOS Catalina.

Case 1: on the new update you might occur problems on PRAM memory and information that should be not updated successfully after update/Restore from old OS X.  Some of the time PRAM memory use an external battery, so it might be not working and out of date battery cant able supply power, in this case, you have to replace it.

Case 2: in case of security purpose, are you using WEP encryption method, that means you can’t use 802.11b, Because Apple’s Airport standard hooked up with Wifi or Ethernet, Verify that Extreme card should be compatible with 802.11g and WPA2.

Case 3: iCloud might be crashed and turn off in this case you have to resolve it.

Case 4: Software update setting might be corrupted, Fixed it be updated or restore old OS X.

Case 5: Verify that if your devices running through Wifi Router and not be updated with the latest firmware cause giving error and WiFi not working on Mac OS X.

Case 6: Distance Between your router and Mac device should not be closer than 1 meter and not longer than 50 meters.

Case 7: Contact your ISP (internet service provider) and Check it for the valid domain name.

Case 8: in you want wifi on hotspot connection and getting an error on particular browser surfing, Then try on other browsers Chrome, Mozilla, Opera and Other.

Case 9: Turn off Wake for network option inside the Energy Saver setting, Apple Menu > System Preference > Energy Saver. Easy solution for WiFi not working on Mac Mojave, OS X 10.9.3, OS X 10.9.4, 2013 iMac

Case 10: Many Users experience against some antivirus that has been blocked some wifi port and a cant open web browser or Application.

You might also like: How to set a password on Mac WiFi hotspot

Here listed cases are possible solutions recommended by brody for fixed network issues in case Wifi not working on Mac Mojave or macOS Catalina, OS X, iMac, MacBook Pro, MacBook Air, and Others. After that, you can’t short out your wifi issue than contact Apple support.

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