If you are having trouble connecting to the internet or accessing specific websites, follow the steps below to troubleshoot the issue. If the internet is still not functioning properly after attempting the steps above, we would suggest reaching out to your Internet Service Provider to see if there is an issue with your connection or if you are currently experiencing an outage in your area.
1. Try accessing another website to make sure the problem isn’t restricted to just one website. Check a reliable website, such as Google.com. If only one site seems to be having problems, visit Down For Everyone Or Just Me and enter the problematic site’s URL. The service will tell you whether computers elsewhere on the Internet can successfully connect to the site.
2. Reset your browser or try a different browser to rule out browser problems. You can download Chrome and Firefox for free. You can find browser reset instructions for a Mac here, and Windows here.
3. Run a speed test if you are able to connect but your connection seems unusually slow. You can find instructions for checking your connection speed here.
4. Try another device if you have access to another computer or mobile device that uses the same Internet connection. If the other device can connect and the Mac cannot, restart your computer. If that does not resolve the issue, skip ahead to the next step.
5. Use Network Diagnostics to diagnose the problem. The Network Diagnostics utility will guide you through a series of questions and tests. This utility may repair the problem itself, provide more details about the nature of the problem, or offer suggestions for solving the problem. To access Network Diagnostics on a Mac, click on the Apple icon in the top left of your screen and open System Preferences. From there, click Network> Assist me> Diagnostics. If you are running Windows, open Network Diagnostics by right-clicking the network icon in the notification area, and then click "Diagnose and Repair."
6. Reset the router if you are on your home network. If you own or control the network device that your Mac connects to, turn that device off, wait about 10 seconds, and turn it back on again. Wait for it to power on completely (sometimes a multistep process that can take several minutes) and try connecting again. If there’s more than one such device between you and the Internet—for example, an AirPort Express connected to a cable modem—start with the one closest to the Internet and then work your way back to your Mac, cycling the power on each one as you go.
*WARNING* The steps below should only be performed by Off-Campus Students. Performing these actions as a Campus Student will hinder your ability to connect to the Campus WiFi.
7. Check the DNS settings. The Domain Name System (DNS) enables your Mac to convert domain names (like apple.com) into IP addresses (like 220.127.116.11). If the DNS server the computer uses is offline, slow, or faulty, it may be unable to connect to any site or service by name. You can change the DNS with the steps below.
Step 1. From the Apple menu, click System Preferences, then click Network. (If the lock icon in the lower left-hand corner of the window is locked, click the icon to make changes, and when prompted to authenticate, enter your password).
Step 2. Select the connection for which you want to configure Google Public DNS. (For example: To change the settings for an Ethernet connection, select Built-In Ethernet, and click Advanced. To change the settings for a wireless connection, select Airport or WiFi, and click Advanced.)
Step 3. Select the DNS tab.
Step 4. Click + to replace any listed addresses with, or add, the Google IP addresses at the top of the list:
Step 5. Click Apply and OK.
Step 1. Go the Control Panel.
Step 2. Click Network and Internet, then Network and Sharing Center, and click Change adapter settings.
Step 3. Select the connection for which you want to configure Google Public DNS. (For example: To change the settings for an Ethernet connection, right-click Local Area Connection, and click Properties. To change the settings for a wireless connection, right-click Wireless Network Connection, and click Properties).
Step 4. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
Step 5. Select the Networking tab. Under This connection uses the following items, select Internet Protocol Version 4 (TCP/IPv4) then click Properties.
Step 6. Click Advanced and select the DNS tab. If there are any DNS server IP addresses listed there, write them down for future reference, and remove them from this window.
Step 7. Click OK.
Step 8. Select Use the following DNS server addresses. If there are any IP addresses listed in the Preferred DNS server or Alternate DNS server, write them down for future reference.
Step 9. Replace those addresses with one of the the IP addresses from the DNS servers listed below:
Step 10. Click OK.