Is it normal for my internet to cut out when I use a VPN?

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Using a VPN has become commonplace: it protects your privacy, encrypts your connection, and bypasses geographical restrictions on streaming platforms, social media, and restricted websites. However, sometimes what should improve your online experience ends up causing the exact opposite: interruptions, slow speeds, or even complete internet outages while the VPN is active.

If you're wondering whether it's normal for your internet to drop when using a VPN , the short answer is yes, it can happen, but it's almost never something "mysterious" or unexplained. Behind these outages, there are usually fairly clear causes: from an overloaded server, an outdated protocol, or a weak Wi-Fi connection, to the firewall, antivirus software, or even your router malfunctioning.

Is it normal for the internet to cut out when using a VPN?

The reality is that it's not uncommon to experience dropouts, micro-dropouts, or instability when connecting to a VPN, especially if you're using free or poorly configured services. A VPN acts as an extra layer between your device and the internet: it encrypts your data and sends it through an intermediary server before it reaches its final destination. This results in increased latency, potential speed loss, and more points where something can go wrong.

Additionally, some VPNs include features like a Kill Switch . This feature automatically cuts off your internet connection if the VPN disconnects, preventing your data from being transmitted unencrypted. In other words, sometimes your internet connection doesn't actually "break down," but rather the app itself intentionally blocks access when it detects a failure in the VPN tunnel.

It's also true that certain services detect and block VPN traffic . Streaming platforms, websites with geographical restrictions, or highly controlled networks (offices, universities, hotels) can drop the connection as soon as they detect traffic coming from a VPN server. You might feel like "the internet is down," but what's actually happening is that the remote service is rejecting that traffic.

Therefore, it 's reasonable to expect occasional problems when using a VPN , but it shouldn't be the norm for everything to crash or become incredibly slow every time you activate it. In that case, we're talking about poor configuration, a cheap product, or some specific incompatibility with your network or device.

What exactly is a VPN and why does it affect your connection?

A VPN (Virtual Private Network) creates an encrypted tunnel between your device and the internet . Everything that leaves your mobile phone, PC, or laptop travels encrypted to a VPN server, and from there it is forwarded to its destination (website, app, online service). To the websites you visit, your real IP address is hidden, and the VPN server's IP address appears instead.

This allows you to hide your IP address and real location , bypass geo-restrictions, and improve security when connecting to public Wi-Fi networks (cafés, airports, hotels, libraries, etc.). It's also key in business environments, where employees access internal resources via VPN when they're out of the office.

This "tunnel" relies on various VPN protocols (OpenVPN, IKEv2/IPSec, WireGuard, PPTP, L2TP/IPSec, etc.) . Each protocol combines encryption, authentication, and a method for encapsulating data. Modern protocols are generally faster and more secure, while older ones tend to be slower and more unstable.

What does all this mean in practical terms? That when you use a VPN, your connection:

• Add an extra jump (you → VPN server → web/service).
• Encrypt and decrypt data, with the cost in resources and time that this entails.
• Depends on VPN server status and the network between you and that server.

If there is a problem at any of those points (excessive latency, saturation, encryption failure, blocking, etc.), you will experience internet outages, pages that do not load, or streaming that freezes.

Most common causes of interruptions and slowness when using a VPN

When you connect to a VPN and problems start, there are usually three main groups of causes : the quality of your internet connection, the configuration of your device (software, system, router) and the VPN service itself (servers, protocols, maintenance).

1. Unstable or overloaded internet connection

If your internet connection is already slow, adding a VPN makes it even more noticeable. An unstable, congested network or very weak Wi-Fi is fertile ground for the VPN to disconnect or lag.

One of the classic reasons is network congestion during peak hours (for example, between 19:00 PM and 21:00 PM, when everyone is watching TV shows, playing online games, or downloading files). Available bandwidth decreases, latency increases, and the VPN tunnel suffers.

The quality of your Wi-Fi also plays a significant role . If you're far from the router, there are many walls, interference, or the equipment is faulty, you'll experience more disconnections when using a VPN. A quick switch to an Ethernet cable or mobile data is often a good way to check if the problem lies with your Wi-Fi and Wi-Fi latency.

Finally, your contracted internet speed imposes a physical limit . If you have 50 Mbps, don't expect a VPN to miraculously boost you to 100 Mbps. On the contrary, it's normal to lose some speed due to encryption and traffic routing. With very slow connections or ADSL, the difference with and without a VPN can be enormous.

2. VPN server problems: distance, load, and ping

Another constant source of headaches is overloaded or very distant VPN servers . The farther the server is from your actual location, the higher the latency (ping) will be. And the more users it has, the more bandwidth is shared among them.

Imagine a server with 1000 Mbps capacity and 100 people connected with heavy traffic; in theory, each person would only have about 10 Mbps available , and that's without considering spikes, protocols, and other factors. If you happen to connect to a very busy server, you'll notice a significant drop in speed and even outages.

High ping is also a problem, especially if you stream, video call, or play online games. If you're in Spain and connect to a server in Asia to watch a specific catalog, the latency will skyrocket. Quality VPNs usually include built-in speed tests or at least indicate the load on each server so you can choose the best one.

3. Outdated or poorly chosen VPN protocols

The VPN protocol you use directly affects stability and speed . Older protocols like PPTP, besides being insecure, are less efficient and tend to perform worse on unstable networks. Others, such as OpenVPN, IKEv2/IPSec, or WireGuard, are much more optimized.

If your service is configured with an outdated protocol or forced into a mode that is incompatible with your network (for example, a UDP that your router filters or a port that is heavily controlled by the ISP), you may experience constant disconnections, "connected but not on the internet", or unresponsive services.

4. DNS and network routing configuration

A common problem is that when you connect to the VPN, the DNS settings don't update correctly or a routing conflict arises. The VPN typically forces the use of its own DNS servers to prevent privacy leaks. If this change isn't applied correctly, your computer may not know how to resolve domains, and in practical terms, you won't be able to browse the internet, even though the physical connection exists.

It's also possible that the VPN is configured to route all traffic through the tunnel (full tunnel) , causing conflicts with the local network or other network interfaces (for example, virtual connections from other programs). This can leave you without internet access or unable to see computers on your own local network.

5. Firewall, antivirus and power saving modes

Often, the problem isn't with the VPN or the router, but with your own computer. A misconfigured firewall or antivirus can block VPN traffic, cut off anything it doesn't recognize, or severely limit the application's bandwidth.

It's crucial that your firewall and antivirus don't block the VPN . You can do a quick test by temporarily disabling them (just to check) and seeing if the connection improves; if you have any doubts, consult the antivirus comparison.

We also shouldn't forget about power-saving modes on laptops and mobile devices . Some systems slow down background processes or limit network usage when the battery is low; this includes the VPN app. You connect, the screen turns off or minimizes, the system "saves power," and the VPN disconnects or freezes.

6. Outdated or saturated devices and routers

An outdated operating system or a very old router can have serious problems maintaining a stable VPN connection . Lack of support for certain protocols, unfixed bugs, and buggy firmware all contribute to the problem.

Furthermore, if your router or PC is overloaded with background processes, downloads, torrents, or many open apps , they consume CPU, memory, and bandwidth resources. The VPN, which already adds extra load, immediately shows the effects.

7. Blocking by the Internet provider or the network

In some regions and with some providers, VPN traffic is closely monitored . Your ISP may throttle or even block VPN connections, especially during peak hours, to free up bandwidth for other users or for censorship/control purposes.

The same thing happens on restricted networks like those in businesses, schools, universities, or hotels . These networks often filter protocols and ports, and in many cases, they detect and directly block VPN traffic. The result: constant disconnections, an inability to connect, or internet that only works poorly when the VPN is active.

8. Low-quality or poorly maintained VPN providers

Not all VPNs are created equal. Free or very cheap services with no reputation often have overloaded servers, no maintenance, and poor security . This translates to more dropped connections, more data leaks, and worse overall performance.

Furthermore, if the application hasn't been updated in a long time, it's likely that it won't be fully compatible with the latest versions of Windows, macOS, Android, or iOS , or that it will malfunction with certain routers. An unattended product accumulates errors that, in the end, you pay for in the form of outages and problems.

Specific reasons depending on the device: Desktop PC, laptop and mobile

VPNs don't always behave the same on all your devices. It's quite common for them to work perfectly on your mobile phone but be a disaster on your PC , or vice versa. This suggests that the problem lies in the configuration or operating system of that specific device.

On a desktop or laptop PC, if you see messages like "no internet connection" when activating Surfshark, NordVPN, etc., while the VPN says "connected ," there's usually a DNS or firewall issue. The tunnel is established, but the system can't resolve domains, or the firewall itself is filtering all traffic that isn't from the VPN.

On mobile devices, it's less common for the VPN to freeze completely, but you will notice slower performance and connection drops when switching from Wi-Fi to mobile data or if 4G/5G coverage is poor. Android and iOS handle VPNs in the background better, but they also apply aggressive battery-saving policies in some custom Android skins.

If it only fails on one device, while it works fine on others using the same network and the same server, the most sensible thing to do is focus on that specific device: network drivers, power settings, firewall, antivirus, app and operating system version.

How to reduce internet outages when using a VPN: settings and best practices

Knowing that outages can occur doesn't mean you have to resign yourself to them. There are several effective steps you can take to improve stability and speed when using a VPN, whether free or paid.

1. Change servers and choose the location carefully.

The first and easiest thing to do is try a different server within the same VPN . If you're connected to one that's too far away or too busy, switch to one that's geographically closer or less congested (if the app shows the server status).

For example, if you're in Spain and want to use a VPN from China to access Google or social media, a server closer to home (Japan, Hong Kong, Singapore) will be more convenient than one in the United States or Europe. You'll reduce your ping and gain stability.

Many apps let you run a built-in speed test , or at the very least, you can connect and use Speedtest, Fast.com, etc. to see which server provides the best connection. It's a matter of trial and error until you find the ones that work most smoothly for you.

2. Improve the quality of your connection (WiFi, cable, router)

If you're browsing over Wi-Fi and experiencing VPN outages, consider upgrading your local network. A Wi-Fi repeater, a mesh system, or powerline adapters can help extend the signal to the area where you typically connect your laptop or desktop computer.

Whenever possible, for intensive VPN use (remote work, gaming, high-quality streaming), connect via Ethernet cable . Stability and latency are significantly improved compared to Wi-Fi, and you'll experience fewer dropouts.

If you rely on Wi-Fi, double-check which band you're using: 2,4 GHz vs. 5 GHz . The 2,4 GHz band has a longer range but is slower and more susceptible to interference. The 5 GHz band is ideal if you're close to the router or access point: faster speeds and less noise.

Also consider your internet plan . If your basic connection is barely adequate, no matter how good the VPN is, it won't work miracles. Sometimes the logical next step is to upgrade your speed or change your technology (from ADSL to fiber, for example).

3. Check firewall, antivirus and power saving modes

It's crucial that your firewall and antivirus don't block the VPN . You can do a quick test by temporarily disabling them (just to check) and seeing if the connection improves. If it does, you'll need to add the VPN app to the allowed or blocked list.

On laptops and mobile devices, check that you don't have power-saving modes enabled that "kill" background processes . If the VPN keeps closing or suspending itself, it's normal for your connection to drop or for you to see "no internet" errors.

4. Change DNS and check routing settings

If you suspect the problem is with DNS (the VPN connects, but no websites load), try using well-known public DNS servers : for example, Google's (8.8.8.8 and 8.8.4.4) or Cloudflare's (1.1.1.1), as long as they don't conflict with your VPN's policy.

On Windows, you can change the DNS settings from Settings > Network & Internet > Advanced network settings > select your network adapter > View additional properties > edit DNS server mapping. On other systems, the process is similar within the network options.

If you're using a corporate or custom VPN, check the routing configuration with your administrator (whether all traffic goes through the VPN or only part of it, using split tunneling) . An incorrect setting here could cut off your internet or local network access.

5. Keep your system, router, and VPN app updated

Keeping your operating system, router, and VPN app up to date is essential. Each update brings security patches, performance improvements, and compatibility with newer networks and protocols.

On your router, access its control panel (usually via a web browser using the device's IP address) and check the firmware or update section for any new versions. If your router is very old and is still having VPN issues even after updating, it might be time to consider replacing it.

6. Controls background processes and malware

If you have many apps open or background processes running (downloads, torrents, cloud syncing, games, etc.), your actual bandwidth and system resources available to the VPN will decrease . Close anything that isn't essential and limit the programs that start with your system.

Don't forget to run a thorough malware scan from time to time . Viruses and Trojans can consume network bandwidth or interfere with connections, and can affect both your regular internet connection and your VPN. Keeping your system clean is also key to stability.

7. Change protocol or provider if necessary

If your VPN allows you to change protocols, try switching from an older or problematic one to a more modern one (OpenVPN, IKEv2/IPSec, WireGuard, depending on what the app offers). Sometimes a simple protocol change fixes disconnections that seemed inexplicable.

And if you're using a free VPN or a service with a bad reputation, it's not uncommon for the disconnections and poor speeds to stem directly from that . In those cases, the real solution is to opt for a reputable paid VPN with powerful servers, robust protocols, obfuscation features for restrictive networks, and decent technical support.

Frequently asked questions about internet outages and VPNs

Can I use the same VPN on my PC and mobile? Yes. Reputable VPNs usually have apps for Windows, macOS, Android, and iOS, and even for Linux and some routers. Just make sure your subscription allows multiple devices simultaneously and that you download the official apps.

Does a VPN prevent viruses from entering your system? No. A VPN encrypts your traffic and protects your privacy, but it's not an antivirus. To better understand what a VPN protects against, read about VPNs protecting against viruses and malware . You still need to use security software, keep your system updated, and browse responsibly to avoid malware.

Is it normal for the internet to be slower when I activate the VPN? Yes, to a certain extent. There's always some loss due to encryption and traffic routing, but with a good VPN, a suitable server, and a decent connection, the difference shouldn't be drastic or cause constant interruptions.

Why does my VPN keep disconnecting on my laptop but not on my phone? Usually, the problem lies in the laptop's settings or configuration : drivers, firewall, antivirus, power saving mode, weak Wi-Fi, etc. Try testing with a different network, check the Event Viewer logs (on Windows), and update both your operating system and VPN app.

Why isn't my VPN working on my phone? It could be due to insufficient permissions, incorrect IP or DNS settings, router firewall rules blocking the VPN, or because the mobile/Wi-Fi network is filtering that traffic. Switching networks, checking the app, trying a different protocol, and updating the system often help.

Using a VPN is a powerful tool for gaining privacy, security, and freedom of access , but it also introduces more variables into the equation: intermediary servers, encryption, protocols, blocking, etc. It's not uncommon for the internet to drop or perform poorly when activating a VPN, but most problems can be minimized by choosing a quality service, configuring it properly, maintaining your local network, and keeping both your devices and the VPN itself updated.