Have you experienced Wi-Fi issues since you installed MacOS Mojave 1
The troubleshooting guide will attempt to troubleshoot and resolve wi-fi issues and problems with MacOS Mojave.
Troubleshooting Wi-Fi Issues with MacOS Mojave
We review a number of steps to troubleshoot wireless network issues on Mac. Some of these are quite simple, while others are more complex and require you to create new network profile information, move system files, use custom network configurations, and other commonly used wireless solutions.
Important: Back up your Mac before moving on. This is important because some of the troubleshooting steps involve accessing and removing system-level configuration files. A complete system backup is important so you can recover from if anything goes haywire and to prevent data loss. Backing up a Mac with Time Machine is easy, do not skip it.
Install available software updates and restart the Mac
It is always a good idea to keep your system software up to date, so you should do the first step to check for any available system software updates and install them if applicable.
You can check and install system software updates in macOS by going to the Software Update Panel in "System Preferences." Be sure to back up your Mac before installing system update.
If you do not have any system software updates available, restart your MacBook, anyway, and sometimes you can start a simple recovery problem with Wi-Fi and network issues.
Disconnect USB 3 / USB C, Docks, Hubs, etc. From Mac
If your Wi-Fi is working, it is often not possible to connect, operates extremely slowly, or is almost useless, there is a possibility of hardware interference with certain USB 3 or USB C devices and Mac. This is because some USB devices send radio frequency that may interfere with wireless networks.
Yes, this sounds strange, but some users apparently notice that some USB 3 and USB C docking stations, hubs and adapters interfere with their Wi-Fi performance, typically on newer MacBook and MacBook Pro computers, but it may also affect other machines.
An easy way to check if this applies to you and your Wi-Fi issues is disconnecting connected USB 3 or USB C devices, docking stations, hubs or adapters from Mac.
If your Wi-Fi connection works well with the USB device disconnected, you have probably found guilty of wireless network issues. If the USB cable is long enough, try moving the USB device further away from the computer itself, to minimize nearby interference.
Some users report that changing the network connection from 2.4 GHz to 5 GHz can solve this problem, or if you get a higher protected USB hub of higher quality, there may also be a difference.
For what's worth, this same USB interference issue can affect Bluetooth performance as well.
Create a new Wi-Fi configuration in MacOS Mojave
These steps will go through removing existing wi-fi configuration files to create new ones, which often resolve network problems on a Mac. Here's what you need to do:
- Back up your Mac first if you have not already done it – do not skip backing up
- Pull down the Wi-Fi menu bar in the top right corner of the screen and select "Turn off Wi- Fi Off "to temporarily disable Wi-Fi on Mac
- Now go to Finder and in any easily accessible location (Desktop, Documents, etc), create a new folder called something" Wi-Fi " Backup Files "
- Then drag down the" Go "menu in Finder and select" Go to Folder "
- Enter the following path in Go to Folder and then select" Go "
- Find and select the following files in the SystemConfiguration folder
- Select those files and move them to the folder "WiFi Backup Files" d you currently do  Now, drag down the Apple menu and select "Restart", this will restart the Mac
- Once your Mac has started, click the Wi-Fi menu at the top right again, this time, select "Turn on Wi-Fi On"
- Join the wireless network as usual by finding the Wi-Fi access point in the Wi-Fi menu
/ Library / Settings / SystemConfiguration /
] preferences .plist
Try using the Internet again as usual, by open safaris and visit your favorite website (which is obviously osxdaily.com!). Wireless networks will work well for most Mac users at this point.
If you still have wireless and wi-fi issues, continue to the next troubleshooting method.
Create a new network location with custom settings
Detail below is how to create a new network location using custom configuration settings for DNS and MTU. This can often solve network problems on your Mac (and other hardware by the way).
- Exit any open app using the Internet (Safari, Mail, Messages, Chrome, Firefox, etc.)
- Select "System Preferences" on the Apple Menu
- Select the "Network" panel, then select "Wi -Fi "
- Pull down the" Location "menu and select" Edit placements "from the
- Click the [+] plus button to create a new network location, give it a clear name as "FixWiFi" and then click "Done"
- Pull down the drop-down menu next to "Network Name" and select the Wi-Fi network to join, and then type w i-fi code if necessary
- Click on the "Advanced" button in the corner of the "Network Preferences Panel"
- Click the "TCP / IP" tab and click "Renew DHCP Lease" 19659046] renew DHCP leasing to get the DHCP information filled in automa Select "DNS" tab, and in the "DNS Servers" area, click the [DNS Server] field, and then click [+] plus button to add the following IP addresses as an entry per line:
- Select the "Hardware" tab and set "Configure" to "Manually"
- ] Adjust "MTU" to "Custom" and set the number to "1491"
- Click "Apply" to enter network changes for the new network workplace
- Exit out of system selection  Finally, you open Safari, Firefox or Chrome and try to visit a site like http://osxdaily.com where to load
(Note that these IPs are Google DNS servers, but you can use CloudFlare DNS or OpenDNS or others if desired)
<img src = "http://cdn.osxdaily.com/wp-content/uploads/2016/09/4-custom-mtu- size-sierra-wifi.jpg "alt =" Select custom MTU settings in network settings  Click "OK" to accept MTU changes
This series of steps involves destroying wi-fi preferences to create new and use one New network placement with defined DNS and MTU settings are some of the most consistent ways to resolve software-based Wi-Fi issues on Mac. We've covered similar troubleshooting steps for Wi-Fi issues with other Mac OS versions, including High Sierra, Sierra, El Capitan, and many releases before, because it's almost always working.
Reset Wi-Fi Router / Modem
If you have problems with a specific Wi-Fi router and / or modem, try resetting the router and modem. Usually, this only involves disconnecting the router and modem for about 20 seconds, then plugging them in again.
The exact process of resetting routers and modems may vary per manufacturer, thus it would be impossible to cover all of the options here. If you're not sure how to troubleshoot Wi-Fi network issues directly related to your Wi-Fi router and modem (cable, DSL, fiber, dial, etc.), contact your ISP for technical support. .
More Wi-Fi Troubleshooting Steps
Most of the MacOS system software updates seem to get a small number of Mac users a bit of wi-fi grief, and in most cases is it just a Part of a broken plist file, a DHCP or DNS problem, or something quite simple to solve. This is no different with the MacOS Mojave 10.14 update (and even the 10.14.x updates), and so while the vast majority of Mac users are not experiencing wireless networking and software updates, some problems may outweigh too little number of macs The good news is that it's usually a simple resolution.
Did the above troubleshooting steps resolve your Wi-Fi issues in MacOS Mojave? Did you find another solution to the wireless network issues? Share with us your thoughts, troubleshooting experience, and fixes to fix wifi issues by posting a comment below!