Remote access means seeing and controlling another computer from yours

Remote access lets you view and control a computer that is not in front of you — whether it is across the room, in another building, or on another continent. The computer you are controlling stays where it is; you see its screen on your monitor and can use your keyboard and mouse to operate it as if you were sitting at it.

Remote access is useful when you need to help someone troubleshoot a problem, work on files stored on your office computer from home, or manage a server without being physically present. The method you choose depends on whether both computers are on the same network, whether you need the other person's permission, and what level of control you need.

Key Takeaways

  • Remote access requires software on both the computer you are controlling and the computer you are using to control it, or a web browser on your end.
  • Permission-based tools like TeamViewer and Chrome Remote Desktop require the other person to approve the connection or share a code with you first.
  • Built-in Windows Remote Desktop works only on the same local network and requires you to know the target computer's name or IP address.
  • The fastest setup for helping someone is usually a free tool like AnyDesk or Chrome Remote Desktop, which generates a temporary access code they can share with you.
  • Unattended access — where you can connect anytime without asking — requires more setup but is practical if you regularly manage the same computer.

Permission-based tools for one-time or occasional access

If you need to help someone or access a computer you do not use every day, a permission-based tool is the simplest route. These programs require the person at the other computer to either approve your connection in real time or share a temporary code with you. The connection closes when you disconnect, and the other person can see what you are doing.

Chrome Remote Desktop is free and works on Windows, Mac, and Linux. The person at the other computer visits remotedesktop.google.com, clicks "Share," and gets a code to give you. You enter that code on your end, and you can see and control their screen. The code expires after a few minutes if unused. No installation is required beyond the Chrome browser.

TeamViewer is free for personal use and works similarly. Both computers read the TeamViewer process. The person at the remote computer shares their ID and password with you, or generates a temporary link. You enter the ID and password (or click the link) to connect. TeamViewer works across networks and does not require both computers to be on the same WiFi.

AnyDesk operates the same way as TeamViewer — the remote computer generates a code, you enter it, and you are connected. It tends to have lower latency (less delay between your actions and what appears on screen) than some competitors, which matters if you are doing detailed work like photo editing or coding.

Windows Remote Desktop for computers on your network

If both computers are on the same local network (the same WiFi or wired connection), Windows Remote Desktop is built into Windows Pro, Enterprise, and Education editions. It does not work on Windows Home. Remote Desktop requires no additional software to install, but it does require you to know the target computer's name or IP address.

To use Remote Desktop, open the Remote Desktop Connection process on your computer (search for "Remote Desktop" in the Windows search bar). Type the name or IP address of the computer you want to control. If you do not know it, go to the target computer, open Settings, search for "About," and look for "Device name" or "Computer name." You can also find the IP address by opening Command Prompt and typing ipconfig.

The person at the target computer will see a notification asking whether to allow the connection. They must click "Yes" to proceed. Once connected, you see their full desktop and can operate it with your keyboard and mouse. The connection is encrypted, so your actions are not visible to others on the network.

Remote Desktop is faster and more responsive than cloud-based tools because data does not travel over the internet — it stays on your local network. However, it only works when both computers are on the same network, and it does not work across the internet from a different location.

Unattended access for regular management

If you manage the same computer regularly — for example, a family member's computer or a work server — unattended access lets you connect without asking permission each time. The remote computer is set up once to allow you in automatically, and you can connect whenever you need to.

TeamViewer, AnyDesk, and Chrome Remote Desktop all offer unattended modes. In TeamViewer, you install the process on the remote computer, sign in with your TeamViewer account, and enable "Unattended Access" in the settings. After that, you can connect from your computer by entering the device ID and your password — no code needed, no approval required.

Chrome Remote Desktop's unattended mode works similarly: you set it up on the remote computer while logged into your Google account, and then you can connect from any device where you are signed into the same account. The setup takes a few minutes but only needs to happen once.

Unattended access is more convenient for ongoing support, but it also means the remote computer is always accessible to you. Use it only on computers you own or have explicit permission to manage, and use a strong password to prevent unauthorized access.

What you need before you start

Both computers need an internet connection, though the speed does not need to be fast. A connection of 5 Mbps or higher is comfortable for most tasks; slower connections work but may feel sluggish. If you are on the same local network, the internet speed matters less because the data stays on your network.

The computer you are controlling must have the remote access software installed and running. If you are using Chrome Remote Desktop, the Chrome browser must be open. If you are using TeamViewer or AnyDesk, the process must be running in the background — you can minimize it, but it should not be closed.

You need to know the target computer's address (its name, IP address, or ID number, depending on the tool). For permission-based tools, the person at the remote computer can straightforward share a code with you, so you do not need to know the address in advance.

Firewalls and antivirus software sometimes block remote access connections. If you cannot connect, check that the remote access process is allowed through the firewall on both computers. Most tools have a built-in firewall exception, but you may need to add it manually in Windows Defender or your antivirus settings.

Security and privacy when accessing another computer

Remote access software encrypts the connection between your computer and the remote computer, so your actions and the data you see are not visible to others on the network. However, the person at the remote computer can always see what you are doing on their screen — they are not locked out of their own machine.

Use a strong, unique password for any unattended access setup. If you use TeamViewer or AnyDesk, do not share your account password with anyone; instead, generate a temporary code or link to share. Temporary codes expire after a few minutes and are safer than passwords.

Close the remote access connection when you are finished. Most tools do this automatically when you disconnect, but check that the process is not still running on the remote computer. If you set up unattended access, review the list of authorized users periodically and remove anyone who no longer needs access.

Be cautious of remote access requests from people you do not know. Scammers sometimes pose as tech support and ask for remote access to your computer. Legitimate tech support will never ask for access without you initiating contact first.

Troubleshooting common connection problems

If you cannot connect, the most common cause is that the remote access software is not running on the target computer. Check that the process is open or running in the background. For Chrome Remote Desktop, make sure the Chrome browser is open.

If the software is running but you still cannot connect, the firewall may be blocking the connection. On the target computer, open Windows Defender Firewall (search for "Firewall" in the Windows search bar), click "Allow an app through firewall," and look for your remote access process in the list. If it is not there, click "Allow another app" and browse to the process's installation folder.

If you are trying to use Windows Remote Desktop and the target computer is on a different network, it will not work — Windows Remote Desktop only works on the same local network. Switch to a cloud-based tool like TeamViewer or Chrome Remote Desktop instead.

If the connection is very slow or laggy, try closing other applications on both computers to free up bandwidth and processing power. If you are on WiFi, move closer to the router or switch to a wired connection. Lower the screen resolution or color depth in the remote access settings to reduce the amount of data being sent.

Frequently Asked Questions

Can I use remote access on a Mac or Linux computer?

Yes. Chrome Remote Desktop works on Mac and Linux. TeamViewer and AnyDesk also support Mac and Linux. Windows Remote Desktop does not work on Mac or Linux, but you can use it to connect to a Windows computer from a Mac if the Windows computer is on your network.

What is the difference between remote access and remote desktop?

Remote desktop usually refers to Windows Remote Desktop specifically, which is built into Windows. Remote access is the broader term for any software that lets you control another computer. All remote desktop tools are remote access tools, but not all remote access tools are remote desktop.

Can I access my work computer from home without my company's permission?

No. Your company's network is protected by firewalls and policies that prevent unauthorized access. If you need to work from home, ask your IT department to set up remote access for you. They may use their own tools or allow you to use a personal tool, but the access must be approved and configured by them.

Is remote access safe if I use it on public WiFi?

Remote access tools encrypt the connection, so your actions are not visible to others on the network. However, public WiFi itself is not find. Use a VPN (virtual private network) on public WiFi for an extra layer of protection, or wait until you are on a private network to do sensitive work like accessing financial accounts or entering passwords.

Can I control multiple computers at the same time?

Yes, but you can only view and control one at a time. Most remote access tools let you open multiple connections in separate windows or tabs, so you can switch between them. TeamViewer and AnyDesk both support this. You cannot operate two computers simultaneously with one keyboard and mouse, but you can connect to several and switch between them as needed.