How to connect to your office computer from home

The question sounds simple, but it has three genuinely different answers, and picking the wrong one costs you either a day of waiting on IT or a security problem you did not want.

Before anything else, it is worth being clear about what you actually need.

First: what are you really after?

• Just some files. Then you do not need remote access at all — you need somewhere the files are kept in sync. This is the most commonly misdiagnosed item on the list.
• One particular application that only runs there. It depends: some business applications already have a web version, or a client that connects to the server at the office.
• That specific computer, with everything on it — the desktop, the open programs, the printer, the machine-locked licences. Only this is a real need for remote access.

The rest of this article is about the third case.

Option 1: the feature built into Windows

Windows has its own remote desktop mechanism. It is free and already there, but it comes with three conditions worth knowing up front:

• the host computer has to run a Pro edition or better — on Home it cannot be reached this way;
• it has to be findable from outside, which in practice means a public address plus a router rule, or a VPN;
• when you connect, the local session locks. Nobody can work at that desk, or watch the screen, while you are connected.

That last point is the one that surprises people most often. There is a separate piece on what it can and cannot do: Remote Desktop in Windows 11.

Option 2: the company VPN

A VPN puts you inside the office network, as though you were there. If your company already runs one, it is often the right answer: you reach file servers, printers, internal applications.

Two things to keep in mind. First, a VPN by itself does not give you your computer's screen — it gives you the network. You usually still need a way to take over that particular machine afterwards. Second, a VPN is not something you set up yourself. It is an administrator's decision and an administrator's configuration.

Option 3: a remote access application

A dedicated application solves the problem from the other end: it runs on both computers, and both reach out to a server that introduces them, rather than one calling the other. That removes the need for a public address and for router rules.

Why that works with no configuration at all is covered in Remote access without a static IP or port forwarding.

The practical upside: you can set it up yourself, in a few minutes, without touching the network. The downside: it is one more program to manage — and if the machine belongs to the company, it is not your decision alone (see below).

The question most people skip

Are you allowed to?

If it is a company computer, the answer has nothing to do with technology. Plenty of organisations explicitly forbid installing remote access software on workstations, and they have good reasons: a workstation reachable from outside is one more door into the internal network.

Ask first. It is a five-minute conversation with IT that may well end with "we will set you up with the VPN" — which is exactly what you needed, without having risked anything.

If it is your computer, in your company, the decision is yours. Then it is worth looking at what actually protects the access: who can start a connection, whether the other end has to approve it, whether traffic is encrypted between the two computers, and whether you can revoke a device remotely.

One thing not to do

Just one, but firmly: do not open the remote desktop port straight to the internet. Public addresses are scanned automatically and continuously, and that port is among the first ones looked for. If you do go with the option built into Windows, it belongs behind a VPN.

In short

If your company has a VPN, ask about that first — it is the least for you to maintain. If it does not, and the computer is yours, a remote access application is the shortest path and the only one that asks nothing of the network. And if it is a company workstation, the first move is not technical at all: it is to ask.