How to Fix Packet Loss: Practical Steps to Improve Network Stability

Packet loss occurs when some of the data sent across a network never reaches its destination. Even a small amount of packet loss can cause noticeable problems during activities that rely on real-time communication, such as online gaming, video calls, live streaming, and VoIP calls.

The good news is that packet loss is usually a symptom of an underlying network issue rather than a problem by itself. Once you identify the cause, it’s often possible to improve or eliminate it.

VeePN Research Lab

Jun 1, 2026

6 min read

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What Is Packet Loss?

When you use the internet, information is split into small units called packets. These packets travel across networks and are reassembled when they arrive at their destination.

Packet loss happens when some of those packets are delayed for too long or never arrive at all.

Common symptoms include:

Lag during online games
Choppy audio in voice calls
Frozen or pixelated video streams
Slow-loading websites
Frequent connection interruptions

Unlike low bandwidth, packet loss can occur even on a fast internet connection.

What Causes Packet Loss?

Several issues can lead to packet loss, including:

Network Congestion

When too much traffic passes through a network at the same time, routers and switches may begin dropping packets. This is common during peak usage hours or when multiple devices are heavily using the same connection.

Weak Wi-Fi Signals

Distance from the router, physical obstacles, and wireless interference can all affect signal quality and increase packet loss.

Faulty Hardware

Damaged Ethernet cables, failing routers, aging modems, or malfunctioning network adapters can interrupt packet delivery.

Outdated Software or Firmware

Old network drivers and router firmware may contain bugs or compatibility issues that affect network performance.

ISP Routing Problems

Sometimes the issue exists outside your home network. Poor routing between your ISP and the destination server can introduce packet loss even when your local connection appears healthy.

Malware or Excessive Background Traffic

Malware, cloud backup software, large downloads, or other bandwidth-intensive applications can overload a connection and contribute to packet loss.

How to Check for Packet Loss

Before changing settings or replacing hardware, it’s worth confirming that packet loss is actually occurring.

On Windows

Open Command Prompt and run:

ping 8.8.8.8 -n 50

If you see lost packets in the results, packet loss is present somewhere between your device and the destination.

You can also use:

tracert 8.8.8.8

This helps identify where delays or routing problems may be occurring.

Network Testing Tools

Tools such as PingPlotter or packet loss testing websites can provide a more detailed view of packet loss, latency, and route quality over time.

How to Fix Packet Loss

1. Restart Your Router and Modem

It sounds simple, but a restart can resolve temporary software issues, memory leaks, or stalled connections.

Unplug both devices for about 30 seconds before powering them back on.

2. Switch to a Wired Connection

Wi-Fi is convenient, but it is also more vulnerable to interference.

If packet loss affects gaming, video conferencing, or other real-time applications, test the connection using Ethernet. If the issue disappears, Wi-Fi is likely the source of the problem.

3. Improve Your Wi-Fi Environment

If a wired connection isn’t practical:

Move closer to the router
Reposition the router in a more open location
Reduce interference from nearby electronics
Use the 5 GHz band when available
Consider a mesh Wi-Fi system for larger homes

4. Update Network Drivers and Router Firmware

Check for:

Router firmware updates
Operating system updates
Network adapter driver updates

Manufacturers regularly release fixes that improve stability and compatibility.

5. Reduce Network Congestion

If multiple devices are streaming, downloading large files, or syncing data simultaneously, packet loss can increase.

Try:

Pausing large downloads
Limiting cloud backups during peak use
Disconnecting unused devices
Enabling Quality of Service (QoS) settings if your router supports them

6. Scan for Malware

Malicious software can consume bandwidth, generate abnormal traffic, or interfere with network performance.

Run a full system scan using reputable security software and remove any detected threats.

7. Test Alternative DNS Servers

DNS problems don’t directly cause packet loss, but they can create symptoms that resemble connectivity issues.

Testing public DNS services such as:

Google DNS (8.8.8.8)
Cloudflare DNS (1.1.1.1)

may help improve overall connection reliability.

8. Contact Your ISP

If packet loss persists after testing your equipment and local network, contact your internet provider.

Ask them to check for:

Line quality issues
Local network congestion
Routing problems
Signal strength problems on the connection

In many cases, the issue can only be resolved by the provider.

Infographic on what causes packet loss and how to fix it

Can a VPN Help with Packet Loss?

A VPN cannot repair faulty hardware, weak Wi-Fi signals, or damaged cables.

However, it can occasionally help when packet loss is caused by inefficient routing between your ISP and the destination service. By routing traffic through a different path, a VPN may provide a more stable connection in some situations.

Results vary depending on the cause of the problem. If packet loss originates within your home network, a VPN is unlikely to make a meaningful difference.

Advanced Diagnostic Tools

If basic troubleshooting doesn’t identify the problem, these tools can provide additional insight:

Tool	What It Helps Identify
PingPlotter	Packet loss and latency across network hops
Traceroute	Where delays occur between source and destination
Wireshark	Detailed packet-level network analysis
Router diagnostics	Signal quality and local network issues
Task Manager / Activity Monitor	Applications consuming excessive bandwidth

Packet Loss Troubleshooting Checklist

Symptom	Likely Cause	Recommended Fix
Lag during online games or video calls	Wi-Fi interference or network congestion	Switch to Ethernet, move closer to the router, or pause heavy background traffic.
Packet loss happens only on Wi-Fi	Weak signal, distance from router, or wireless interference	Reposition the router, use the 5 GHz band, reduce obstacles, or consider mesh Wi-Fi.
Packet loss affects every device	Router, modem, cabling, or ISP-side issue	Restart your equipment, check Ethernet/coax cables, then contact your ISP if the issue continues.
Packet loss started after an update	Network driver, router firmware, or OS compatibility issue	Update the network adapter driver and router firmware, or roll back the recent update if needed.
Connection gets worse during downloads or streaming	Bandwidth saturation	Pause large downloads, limit cloud backups, disconnect unused devices, or enable QoS on the router.
Packet loss appears only with one app, game, or service	Routing problem, overloaded server, or service-side issue	Test another server or region, check the service status, or try a VPN only if routing seems to be the problem.

For deeper background, Cloudflare’s explainer on what causes packet loss is a solid reference, and you can confirm your line quality with a tool like Speedtest. A VPN will not fix faulty hardware, but on congested or throttled routes a nearby server can give a steadier path — see VeePN’s streaming setup, VPN for router for whole-home coverage, and Kill Switch to prevent leaks if the tunnel drops.

Final Thoughts

Packet loss is usually caused by network congestion, Wi-Fi interference, hardware issues, software problems, or ISP routing faults. Identifying the source is often more important than applying random fixes.

Start with the basics: restart your equipment, test a wired connection, update firmware, and check for excessive network usage. If the issue persists, diagnostic tools and assistance from your ISP can help pinpoint the cause.

In some cases, a VPN may improve connectivity by avoiding problematic routes, but it should be viewed as a potential workaround for routing issues rather than a universal fix.