7 of the Most Common Network Problems and How to Solve Them

Companies rely on Internet technology for various purposes, such as communication, collaboration, data management, and customer service. For this reason, business networks are expected to provide reliable, secure, and cost-effective solutions to support their operations. Unfortunately, these technologies aren’t perfect because they can experience various issues, such as network problems.

Network problems are common and can be caused by various factors, such as server or router malfunctions, hardware or software failures, and power outages. If left unchecked, these issues can lead to increased latency, slow speeds, and even complete outages, which can cause problems for businesses. Furthermore, network problems can also create security risks, as malicious actors can use them to gain access to confidential data. For this reason, one must know some of the most prevalent network issues and how to prevent them, such as:

#1 – Slow Network 

Slow networks can be caused by congestion from too many devices connected to the same network. This can be caused by improper network configuration or simply too many users on the same network. Ideally, businesses should limit the number of users accessing the network and ensure proper configuration. Companies should also use quality of service (QoS) to prioritise traffic and ensure that critical data is delivered faster.

#2 – Physical Connection Issues

Faulty cables, damaged ports, or incorrect wiring can cause physical connection issues. These issues are relatively straightforward, so businesses should regularly check the cables and ports, replace any damaged components, and ensure that the wiring is configured correctly.

However, it’s also possible that the issue is more complicated and requires more advanced troubleshooting. In this case, businesses should contact their internet service provider (ISP) or a qualified technician to help diagnose and fix the problem.

#3 – Weak Wi-Fi Signal

Several factors, including interference from other devices, distance from the router, or outdated hardware, can cause a weak Wi-Fi signal. Companies should start by ensuring that their router is up to date and in the optimal location.

They should also consider using a range extender or access point to improve coverage and signal strength. It’s also possible to check for any potential sources of interference, such as other wireless devices or physical barriers, and take steps to reduce or eliminate them.

#4 – Duplicate IP Addresses

The IP address is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. Duplicate IP addresses can occur if two devices in the same network are assigned the same IP address, which can cause network communication problems.

Companies should check the DHCP server settings to ensure each device is assigned a unique IP address. If duplicate IP addresses are detected, the network administrator should change the IP addresses of the affected devices. They should also check the router settings to ensure that the DHCP server is enabled and functioning correctly.

#5 – Slow DNS Lookups

Slow DNS lookups can occur when a DNS server is slow to respond to requests. Various factors, such as high requests, outdated DNS server software, or incorrect DNS server configuration, can cause this.

Companies should check the DNS server settings to ensure they are updated and configured correctly. They should also ensure that the DNS server is not overloaded with requests. Alternatively, a third-party DNS service, such as Google Public DNS, is recommended to provide faster response times than an internal DNS server.

#6 – Too Much CPU Usage

Too much CPU usage can be caused by various factors, including too many programs running simultaneously, insufficient RAM, or a virus. To reduce CPU usage, businesses should check the programs running on their system and close any unnecessary programs.

A RAM upgrade is also in order if it’s insufficient. Of course, a virus scan must be done to ensure that malicious software is not taking up resources.

#7 – VLAN Misconfiguration

A VLAN misconfiguration is a common issue that can cause network and security issues. Companies should ensure that VLANs are appropriately configured and that access is restricted to authorised users. Additionally, a firewall should be used to protect the VLANs from unauthorised access. Regular monitoring should also be done to ensure that the VLANs are configured correctly and not being exploited.


Network problems are common but can be devastating if not appropriately addressed. Because of this, any company must take the necessary steps to protect its network and ensure that it’s properly configured and secure. This way, its operations will run smoothly and efficiently, and its data will be safe from malicious attacks.

ILL IT Solutions provides quality services for local IT support. We understand the needs of businesses, so we offer comprehensive solutions to ensure your business gets the tech support it needs. Call 0208 599 7771 today and allow us to help you!

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