7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Attending an important meeting or watching the latest episode of Attack on Titan requires a steady internet connection. But what happens when your Ethernet speed is capped at 100Mbps? If you’re facing this issue, here are 7 ways to fix it on your Windows device.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

The more popular Wi-Fi uses wireless signals to transmit data to multiple devices simultaneously. On the other hand, Ethernet uses Ethernet cables. However, only one device can be connected to a single Ethernet port at a time.

Although this can be restricting, as you need to stay near the router, it encourages faster data speeds through a direct connection. However, it becomes an issue when Ethernet speeds are capped at 100Mbps. Let’s try to fix this issue.

1. Check Your Internet Plan

Even with the necessary equipment, such as a suitable router or Ethernet cable, it’s pointless if your current internet plan is limited to 100Mbps or less. To determine if this is the scenario, connect your device to a Wi-Fi network and perform a speed test using websites like Fast. If the speeds surpass 100Mbps, proceed with the troubleshooting process.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Alternatively, you can contact your internet provider to inquire about your plan details. Confirm if internet services are working as expected in your area. For certain providers, check your plan details via the official app, website, or on your bill.

2. Check Your Ethernet Cable

Ethernet uses a cable to establish a connection, so when there are issues, we need to check if the correct cable is being used. Ethernet cables Cat5e, Cat6, or higher are sufficient to support gigabit speeds of 100Mbps or higher. So, check the cable you’re using. If it is below this, you might need a new Ethernet cable.

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7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Ensure the cable is in good condition. Loose ports and frayed cables can cause significant drops in internet speeds, so use the correct cable type and securely connect it to your Windows device.

3. Restart Router and Windows 11

Sometimes, simply turning your device off and on again can fix technical problems. This process can reload device functions and resolve temporary glitches. So, if you encounter Ethernet issues, try restarting your router and Windows device to troubleshoot them.

Note: Remember to disconnect the Ethernet cable before proceeding with the steps below.

Step 1: Click on Start in the taskbar.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Step 2: Click on Power.

Step 3: Click on Restart.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

To improve your internet connection speed, turn off your router or unplug the power cable for a few seconds. Then, reconnect the power and wait for the devices to restart. Finally, plug in the Ethernet cable again and check if the speed has improved. If not, try the next solution.

4. Check Adapter Settings

If your hardware and internet plan are sufficient, check if your Windows device is the problem. Adapter settings can limit internet speed based on the configured setting. To fix this, set the adapter properties to automatically negotiate internet speed and ensure no interference from your PC. Here’s how:

Step 1: Right-click on Start and click on Device Manager.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Step 2: Click on Network adapters, and right-click on the relevant internet adapter when the options expand.

Step 3: Click on Properties.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Step 4: Open the Advanced tab from the menu options.

Step 5: Scroll down and click on ‘Speed & Duplex’.

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Step 6: Use the Value drop-down and select Auto Negotiation.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Step 7: Click OK.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

This will ensure your system negotiates the highest possible speed for your device, depending on your internet plan, router, and Ethernet cable.

5. Run Network Troubleshooter

You can diagnose most issues by running the network troubleshooter on your Windows 11 device to check for any common issue that might interfere with your device’s Ethernet settings. Use this if the Ethernet link speed is still capped at 100Mbps. Follow these steps to do it. Step 1: Use the Windows + I key to open Settings. Step 2: From the sidebar menu, select System. Step 3: Scroll down and click on Troubleshoot.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Step 4: Click on Other troubleshooters.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Step 5: Go to ‘Network and Internet’ and run.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Once the troubleshooter finishes the diagnosis, follow the on-screen instructions to solve this issue and restore your Ethernet speeds. If the problem persists, try the next fix.

6. Check for Driver Updates

Updated drivers improve device performance by ensuring compatibility with new hardware and preventing speed limitations. Outdated drivers can hinder performance, even when hardware is functioning properly. Although Windows installs driver updates automatically, manual checks are still necessary if automatic updates are disabled. To manually check for updates, follow these steps: Right-click Start, select Device Manager.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Step 2: Click on Network adapters.

Step 3: Right-click on the relevant internet adapter.

Step 4: Update driver.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Step 5: Click on ‘Search automatically for drivers’.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

This will prompt Windows to search for the latest driver updates online. Once installed, restart your device and check again.

7. Update Windows 11

Windows updates include important fixes for software glitches that can cause issues such as Ethernet link speed being limited to 100Mbps. They also introduce new device features, fixing existing glitches and improving device compatibility with other services.

If you have been delaying updates, it is time to download and install them. Here’s how:

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Step 1: Search for “Windows Update” and open the app from the results.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

Step 2: Click on ‘Check for updates’.

7 Ways to Fix Ethernet Speed Capped at 100Mbps on Windows 11

If an update is available, download and install it. Then, disconnect and reconnect the Ethernet cable and check your internet speed again.

FAQs for Fixing Ethernet Limited to 100Mbps

1. Not all routers support speeds above 100Mbps. If you’re only getting 100Mbps on Ethernet, check your router for higher speeds. You can also search for the router model number online. For more information, read our guide on choosing the right router.

2. Router settings can sometimes cap Ethernet speed at 100Mbps on Windows 11. To confirm, open Terminal as admin and input the “ipconfig” command. Then, paste the Default Gateway address in a web browser to access your router’s settings and check. If this method doesn’t work, contact the manufacturer of your router.

Get the Most Out of Your Ethernet

Experiencing slow internet speeds, even with a higher plan, can be frustrating when you’re working or streaming. This article aims to address the problem of Ethernet connection speed being limited to 100Mbps on your Windows 11 device.

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