Main Causes of Slow Internet and Disrupted Web Access

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Ngày cập nhật gần nhất: 15/4/2026

Feeling frustrated and considering a switch to a different internet service provider due to frequent network losses or slow speeds? Before doing so, explore the reasons behind these issues and potential solutions before deciding to change your Internet service provider.

Internet access has become a familiar routine for most people in today's modern era, providing access to valuable information through online platforms. Alongside usage, users should regularly check the internet speed of their workplace or residence. Various online services, such as Speedtest, facilitate effective internet speed testing...

However, on a fine day, you may notice a slower internet speed and occasional signal loss, causing discomfort and affecting both work and entertainment. Instead of waiting for technical support to accelerate your internet, you can follow this article to discover the top reasons for slow internet and disrupted internet access and learn how to address these issues for your home network.

Main Causes of Slow Internet and Delayed Web Access

1. Weather-Related Issues

In the present day, there are two common types of transmission lines: fiber optic and copper. As the internet connection via copper lines depends on the weather, on stormy days, the internet connection may not perform as expected, leading to slower network speeds and potential disruptions.

Resolution: This is an uncontrollable factor. Therefore, Mytour suggests switching to a fiber optic connection for more stable signals.

2. Conflict Between Wifi Router and Modem

When using multiple devices like modems, routers, switches with incorrect configurations and overlapping IP addresses with the modem, it can lead to conflicts, resulting in slow or even no internet connectivity.

Resolution: Identify the device with the duplicate IP, reconfigure it, try to remember the IP address, and assign it to a different range than the modem's address or turn off DHCP.

3. Network Overload Due to Excessive Device Sharing

To save costs, many people share their internet connection with multiple users through Ethernet cables or Wi-Fi. However, this is also the root cause of your internet slowing down when multiple users are online simultaneously or downloading software or media.

Resolution: Limit the number of devices sharing the internet connection, avoid downloading or streaming during peak hours, or consider upgrading to a higher-speed internet package.

4. Computer Infected with a Virus

A computer infected with a virus is a major factor causing slow web browsing or internet access. Viruses can utilize your internet connection for different purposes, consume system resources, and even disrupt internet connectivity. Signs of a virus infection include slow Windows startup or application launches and frequent system freezes.

Resolution: Reinstall the operating system and use the best antivirus software available to defend against computer viruses. Regularly use antivirus software weekly to prevent data breaches that can lead to a slow network.

5. Submarine Fiber Optic Cable Breakage

This term is probably not unfamiliar as submarine cable breakages occur quite frequently, causing a stir in the online community.

Resolution: You can only wait for the cable breakage issue to be repaired. However, as a temporary solution, consider subscribing to 3G/4G network plans or explore ways to address slow internet when the AAG submarine cable is broken, as previously shared by Mytour.

6. Issues with Modem, Switch, or Network Card

Modems and switches are devices that you plug in constantly, 24/7. Therefore, these devices can sometimes cause slowdowns or errors, preventing internet access.

Resolution: Reset these devices and check the speed and internet access. Additionally, plug the network cable directly into the modem without going through the switch to check if the switch is faulty. If the network is frequently marked as cross and reconnecting, try using the cable on another computer to check its condition. If the cable is fine, examine the network card on the computer for any issues.

7. Issues with the Service Provider

Issues with Service Provider: The final and quite common cause originates from your service provider. When you receive a modem from the provider, it may not be a high-quality device and could even be a used one, directly impacting your usage experience. Moreover, the quality of the connection is susceptible to external factors like weather conditions or accidental damage by wildlife. In such situations, promptly contact your service provider for advice on resolution.

Here is a compilation of the prevalent reasons for slow internet and delayed internet access that Mytour wants to share with its readers. Hopefully, if you encounter any of these situations, you can proactively address the issue instead of waiting for network technicians. Additionally, some users may experience network speed issues, especially on Windows 10 Anniversary, after updating their operating system. Users facing this situation can refer to our guide on fixing slow network connection issues after updating Windows 10 Anniversary. Wishing you all success.

Frequently Asked Questions

What are the common reasons for experiencing slow internet speeds?

Common reasons for slow internet speeds include weather-related issues, conflicts between the router and modem, network overload from excessive device sharing, and computer viruses. Each of these factors can significantly impact your internet performance, causing frustration and disruption in daily activities.

How can I resolve issues with my internet connection?

To resolve internet connection issues, you can start by checking for conflicts between devices, limiting the number of devices using the internet, and ensuring your computer is free from viruses. Additionally, consider switching to fiber optic connections for better stability and contacting your service provider for assistance.

Is it necessary to upgrade my internet plan if multiple users are connected?

Yes, upgrading your internet plan is advisable if multiple users are connected simultaneously. This can prevent slowdowns caused by excessive device sharing, especially during peak hours when many users are online.

Can a virus infection affect my internet performance?

Yes, a virus infection can severely affect your internet performance. It may use your internet connection for malicious purposes, consume system resources, and cause slow browsing speeds. Regular antivirus checks and system reinstalls can help mitigate these risks.

What should I do if my internet connection is slow due to submarine cable breakage?

If your internet connection is slow due to submarine cable breakage, the best option is to wait for repairs. In the meantime, consider temporary solutions like using 3G/4G network plans or exploring methods to optimize your internet speed during this period.

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