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Today, this article will show you how to fix Ethernet Speed Capped at 100 Mbps on Windows. Most Ethernet connections have speeds between 100 Mbps and 1 Gbps. Even if your ISP promised you a Gigabit fiber connection, if your network equipment doesn’t support a 1.0 Gbps (Gigabit) connection, you may only see a 100 Mbps cap when you look at the Details window of your Ethernet adapter in Windows 11 or Windows 10 or when you test your internet speed.
Setting up a network at home or in a small office no longer needs a technician who can constantly monitor and tweak the LAN routers and PCs that are linked to them. Since Windows networking has gotten better and new hardware features have been added, setting up a 1GB network should be as easy as connecting the LAN to a router that already has this feature.
If, on the other hand, the network’s estimated speed is only 100MB, it will be harder to figure out what’s wrong. If your Internet service provider (ISP) offers you a Gigabit fiber connection (speeds of 300 Mbps, 500 Mbps, or 1 Gbps), but your Ethernet speed is capped at 100 Mbps, this guide will explain why and show you how to fix Fix Ethernet Speed Capped at 100 Mbps.
Inferior router and Ethernet adapter
If you have an older router, it might not be able to connect at 1Gbps. Instead, it might only be able to connect at 100Mbps. Modern routers don’t have this problem, so we think you should buy a new one to get rid of the problem once and for all.
Routers are not very expensive these days, so if you aren’t sure which one to buy, how about the Linksys WiFi 5 Router, Dual-Band? It’s cheap and can handle connections up to 1.2Gbps, which is more than what you need. If you want to know more information about this Visit Official Microsoft Support site.
Now, not all Ethernet adapters that come with your computer can handle Gigabit speeds. So, what should you do if yours isn’t? Well, you can buy an inexpensive Ethernet adapter that supports Gigabit connections and plugs straight into the USB port on your computer.
Issues with the Ethernet cable
Most of the time, when an Ethernet link to the internet doesn’t work, the problem is with the cable itself. No matter what, a 1Gbps link should never be limited to 100Mbps. So, we recommend that you check to make sure you’re using the right wire. You need a Cat5e Ethernet cable or a Cat6 cable, which can handle speeds of up to 10Gbps, to make a link at 1Gbps. Always keep in mind that a lower wire won’t be able to give you the speeds you want.
Also, it’s possible that your wire is broken in more than one way. For example, it could be old or have broken fibers inside. If you have an extra cable lying around, you can use it to see if the problem is with the one you are using now. Also, if you have a hub that is linked to a router, make sure that all of the Ethernet cables are the same type and in good shape. Even if just one of them doesn’t work, it can affect your whole link and slow it down.
Configure the Speed and Duplex settings
The thing is that Windows 11/10 has a tool called “Speed & Duplex.” The user can find out how fast the Ethernet port is with this function. So, what if at some point these settings were changed? Let’s talk about how to fix this.
- Click on the Search icon located on the Task Bar.
- Next, type Device Manager into the search box.
- From the Device Manager window, go to Network Adapters.
- Expand the Network Adapters section and right-click on the Ethernet adapter.
- Select the Properties option via the context menu.
- When a new window appears, please click on the Advanced tab.
- Look to the Property section and select Speed & Duplex from the list.
- Go to the dropdown menu under Value and select the appropriate speed.
Contact your Internet Service Provider
If all of the above doesn’t work, you might want to call your ISP directly to see if the problem is on their end instead of yours. If it’s the ISP’s fault, you’ll have to wait until they fix it before you can get back online.
Why is my Ethernet speed so slow?
LAN, which stands for “Local Area Network,” is a wired link. When you have problems like this, the first thing you should do is check the cables to see if they are broken. Also, check to see if there are any problems with the ports on your computer and router. Changing the ports helped a lot of people.
Another reason why an Ethernet link in Windows might be slow is because of the network drivers. So, make sure they are up-to-date and that you install a version that works with your computer. Also, since many people started having the problem after they updated their operating system, it’s likely a bug in the current version. In this case, Microsoft would soon come out with a fix for it. So keep an eye out for newer versions, and when you find them, run them.
A slow LAN speed in Windows 11/10 is also likely caused by incorrect DNS servers, third-party apps, firewalls, Proxy, and network settings. Let’s move on to how to fix it. Also, after trying each of these methods, use a site like Speedtest to see if the Internet speed gets better before moving on to the next one.