I know why you are here. OK, I don't know for sure, but thousands of people have already found this article, presumably with the hope of finally resolving their WiFi problem on their Intel-based MacBook Pro. I can help with MacBook Pro slow WiFi, but I can't guarantee results to anyone except my clients.
I'm making some of this information public for two reasons (1) to serve the MacBook Pro community and (2) to encourage you to choose the Bruce Tyson team as your IT partner. We offer intense, results and ROI-driven services that can improve the efficiency of your firm. We can, for example, reclaim for you the wasted time that you and your staff now spend trying to fix their MacBook Pro WiFi problems.
Without further adieu, let's get started.
MacBook Pro Slow WiFi - Symptoms
Any or all of the following symptoms of MacBook Pro slow WifFi have confounded MBP owners for years:
- WiFi works fine on an Apple Airport router at the office, but not on a home cable-company-provided WiFi Router.
- Ethernet network connects function well, indicating a problem isolated to the WiFi components.
- Some of the tips and tricks online, though outdated, occassionally seem to improve WiFi performance.
- Even after noticing improvements, the MacBook Pro slow WiFi problem returns.
- Your MBP might function well on other home or office WiFi networks, even when they do not use an AirPort router.
- Always, other wireless devices, including Windows and Linux PCs function perfectly on the network that causes MacBook Pro slow WiFi.
MacBook Pro Slow WiFi - What to do?
Before you begin troubleshooting MacBook Pro slow WiFi issues, schedule a block of time. MBP owners have been known to obsess with this issue and thereby spend entire days or weeks at a time. Pace yourself and remember to keep up with your other responsibilities.
Next, follow these steps. You might be able to solve your MBP slow WiFi problem without calling us.
Check for channel crowding
Residential areas often have multiple WiFi networks avaialble. When those networks use the same channel to cover the same area, performance can suffer. Here's how to do it for your MacBook Pro.
From Spotlight Search, type "Wireless Diagnostics" and then press Enter.
Click "continue" and then enter your system password. When the "Diagnose" window appears, don't click "continue." Instead, click "Window" in the menu at the top of your screen. From the drop-down menu, choose "Scan." You can also try the shortcut key combination of Option+Command+4.
Mouse-over each network that appears in the window and pay attention to the Channel Number of each. In the below example, the computer is connected to Channel 6.
If, when you do this, you find that multiple devices are using the same channel, log into your WiFi router and change it to a less-crowded channel.
Delete network configuration and preference files
MacOS X stores your network settings and preferences in /Library/Preferences/SystemConfiguration/
Browse to the folder in Finder or, with Finder in your active window, press Shift+Command+G and paste the path into the dialog window.
In this folder, delete the following files:
Some systems also have com.apple.network.identification.plist. Delete it too, if you have it.
Now, reboot your computer and activate your WiFi. Is it better?
Create new WiFi-only network location
Your network speed might slow if you have multiple network interfaces within the same network location profile. Create a new WiFi-only location and name it something like "Home-WiFi." Add your wireless adapter to this location. If you also have a wired LAN in your home, create a profile for it too, called "Home-Wired." It should be the only adapter in this location. From now on, when you want to switch between wired and WiFi, change between these two locations.
Here's an example of what your WiFi location should look like:
Repeat this process to segregate each connection option, including those at work, school, Starbucks and at relatives and freinds' locations.
At your home (or any other location where you have MacBook Pro slow WiFi), give yourself a boost by configuring a custom DNS. Try using Google's Public DNS, for example, you can eliminate bottlenecks that sometimes result from poorly configured ISP DNS servers.
Change your DNS settings by clicking the "Advanced" button the the lower-right of the "Network" settings tab. Choose the "DNS" tab and enter your new DNS servers. See the below image for an example.
While you're in your network settings, click over to the "Hardware" tab and change your MTU to 1453.
When your WiFi gives you fits, you want to feel like you're doing something, right? If you're not making headway, try resetting the Systme Management Controller (|SMC) on your Macbook Pro. Do this by shutting down your computer and attaching the power adapter. Next, hold down Shift+Control+Option+Power for about five seconds. After that, release the keys and boot your computer.
Those tips didn't work. What should I do now?
Contact us. We have a team of experienced IT professionals who have, in the past, troubleshooted and repaired MacBook Pro Slow WiFi problems. We have the tools, skills and capabilities needed to resolve all your IT headaches.