Why Your VPN Might Struggle on Trains, Cafés, or Public Wi-Fi

Understanding VPN behaviour when working outside the office

Remote working has become a normal part of business life. Whether you are working from home, travelling on a train, or using a café Wi-Fi connection, a VPN (Virtual Private Network) helps protect company data by encrypting your internet connection.

However, the experience of using a VPN outside the office can vary significantly depending on the network you are connected to.

This guide explains why this happens and what you should do if your VPN struggles to connect.

Why VPN Performance Can Vary on Public Networks

When you connect to Wi-Fi on a train, bus, café, hotel, or airport, you are using a network controlled by a third party. These networks often apply restrictions to manage bandwidth and prevent misuse.

Common restrictions include:

• Bandwidth limits to stop a small number of users consuming all available internet capacity
• Traffic filtering to block certain types of online activity
• Firewall rules that restrict or block VPN connections

Some public networks intentionally block VPN traffic because users sometimes attempt to use VPNs to bypass restrictions. For example, people may try to:

• Download large files
• Access restricted content
• Stream movies or media that the network has blocked

Because of this, certain public networks deliberately restrict or block VPN connections.

What to Do If Your VPN Won’t Connect

If your VPN struggles to connect while using public Wi-Fi, try the following steps:

1. Restart the VPN application

Sometimes the VPN application simply needs to refresh the connection.

Close the VPN application completely and reopen it, then attempt to connect again.

2. Try reconnecting once or twice

If the connection still fails, try reconnecting one or two more times.

Avoid repeatedly trying to reconnect, as this can slow your connection and lead to further frustration.

If the VPN Still Will Not Connect

If the VPN continues to fail after restarting the application, it is very likely that the network you are connected to has restrictions in place that prevent VPN connections.

At this point, the best option is to stop attempting to reconnect. Repeated connection attempts will usually result in a poor experience and will not bypass the network’s restrictions.

Important: Do Not Use Business Systems Without the VPN

If the VPN cannot connect successfully, you should not access company systems or perform work-related tasks.

Without the VPN:

• Your connection is not encrypted
• Your activity may be visible on the network
• Sensitive information could be exposed

For security reasons, business work should only be carried out when the VPN is successfully connected.

If you continue to use the network without the VPN, it should only be for personal browsing or non-business activity.

Understanding the Limits of the VPN Service

The VPN application used for remote access is a third-party service. While Fox Technologies installs, configures, and supports its use, we do not control the underlying VPN platform or the public networks that users connect through.

This means that:

• VPN performance may vary depending on network conditions
• Some networks may restrict or block VPN traffic entirely
• External firewall rules and bandwidth controls are outside our control

Fox Technologies will always investigate and assist with any issues reported. However, where connection problems are caused by network restrictions, bandwidth limits, or third-party infrastructure, there may be little that can be done to resolve the issue from our side.

Using the VPN Where Possible Is Still Important

Even if the VPN cannot connect in every location, it is still far safer to use it whenever it is available.

For example, if the VPN works in:

• Your home network
• Certain cafés
• Hotels
• Mobile hotspots

but does not work on some train or public Wi-Fi networks, you are still significantly improving your security by using it whenever possible.

Using the VPN successfully in 50% of locations is still far safer than not using it at all.

Learning Which Locations Work Best

Over time, you will begin to notice that some locations allow VPN connections easily while others do not.

For example:

• Some train Wi-Fi services restrict VPN traffic
• Certain cafés apply strict firewall rules
• Some public hotspots heavily limit bandwidth

As you gain experience using the VPN, you will naturally learn which networks work well and which ones do not.

Until then, occasional connection problems when travelling are normal and expected.

Summary

If your VPN struggles to connect on public Wi-Fi:

1. Restart the VPN application
2. Try reconnecting once or twice
3. If it still fails, the network is likely blocking VPN traffic
4. Stop trying to reconnect repeatedly
5. Do not access company systems without the VPN
6. Wait until you are on a different network where the VPN connects successfully

Using the VPN whenever it is available remains the safest approach when working outside the office.