When Should You Not Use a VPN?

This page is part of the Proton VPN FAQ Hub.

Why does online banking go wrong with a VPN on?

The narrow answer to when should you not use a VPN starts with your bank. Banks score every login on IP reputation, geography and device history, and an address belonging to a hosting company in another country scores badly on all three. The result is extra verification steps, blocked transfers, a frozen session or, in the tedious cases, a phone call to fraud services.

There is nothing insecure about banking through a VPN, since the connection to the bank is already encrypted by the site itself. The problem is entirely the bank’s fraud logic reacting to an address it does not like. Disconnecting for the duration solves it, or you can push the banking app outside the tunnel with split tunnelling and leave the rest of your traffic protected.

Why can’t you print, cast or reach your NAS?

Because your local network stops being reachable. Device discovery works by broadcasting on the network you are attached to, and when everything is being funnelled into an encrypted tunnel to Amsterdam, those broadcasts go nowhere useful. The printer is fine, the television is fine, your laptop simply cannot see them any more.

Some apps offer an allow local network connections option that carves out an exception, one of the settings covered in how to set Proton VPN up, and a strict kill switch can block that too. For a five-minute job, disconnecting is faster than configuring anything.

• Wireless printers and scanners that rely on local discovery.
• Casting to a Chromecast, Apple TV or smart television.
• Network storage, shared drives and media servers at home.
• Smart home devices during setup, when they need a direct local handshake.
• Local development servers and anything else on a private address.

Does a VPN ruin online gaming?

For competitive play, usually yes. Every extra millisecond of ping shows up in a shooter, matchmaking may drop you onto servers in the wrong region, and some publishers treat VPN addresses as a ban-evasion signal. Accounts have been suspended for less, so read the rules for whatever you play before connecting.

There are exceptions. Players who attract denial of service attacks in ranked lobbies genuinely benefit from hiding their address, and occasionally a VPN routes around a poor ISP path to a game server. For casual single-player games with online check-ins, the extra latency is irrelevant. Anything where reaction time decides the outcome sits squarely on the list of when should you not use a VPN.

Which sites simply block VPN users?

Plenty, and it is rarely negotiable. Blocking is done by matching your address against lists of known datacentre ranges, so the block applies to the address rather than to you or to Proton specifically. Some sites refuse outright, others bury you in verification puzzles until you give up, which amounts to the same thing.

The usual suspects are consistent across providers.

• Streaming platforms enforcing regional licences.
• Banks and payment processors, especially on a device they have not seen before.
• Ticketing and limited-release retail sites fighting resale bots.
• Government and health service portals that expect a domestic residential address.
• Wikipedia editing, which blocks known VPN ranges as a matter of policy.
• Anything behind an aggressive bot filter, where you get endless CAPTCHAs instead of a clean refusal.

Does a VPN still help once you have logged in?

This is the important one, and the answer is no. The moment you sign into an account, that service knows precisely who you are, and your IP address becomes the least interesting thing it holds about you, which is the main way tracking survives a VPN. Searching whilst signed into Google, scrolling whilst signed into a social network or shopping with a saved card produces a record tied to your name regardless of which country your traffic appears to come from.

Your address is one signal amongst many, and not a strong one. Cookies, browser and device fingerprinting, login sessions, payment details and behavioural patterns all identify you independently. A VPN protects the connection between your device and the internet. It cannot retract the identity you hand over the second you type a password, and any advert suggesting a VPN makes you anonymous online is describing a product that does not exist.

So when should you not use a VPN, and when should you?

On networks you do not control, such as hotels, cafes, airports and conference Wi-Fi. When you would rather your ISP did not build a record of every domain you visit, which in several countries it is permitted to monetise. When you are travelling somewhere that filters the internet. When you want ad networks and data brokers to have a less useful picture of your location, or when you would rather your ISP had no view of what you download.

That list is short, specific and worth paying for, which is the whole case. Proton VPN Plus across 10 devices covers a household for the jobs it does well, and the honest position is that you should turn it off for the jobs described above. A tool that admits what it cannot do is a better bet than one promising invisibility.

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