How to Run Multiple MT4/MT5 Terminals on One Computer

A step-by-step guide to installing and running two or more independent MT4 or MT5 terminals on the same PC or VPS without one instance overwriting another's data or login.

If you manage a personal account alongside a prop firm challenge, or you trade with two or three different brokers, you'll eventually hit the same wall: MetaTrader doesn't naturally expect you to run more than one copy of itself at a time. Install a second broker's platform into the same folder as the first, log in, and you may find your original account's login and chart layout have simply vanished. Running multiple MT4/MT5 terminals on one computer is entirely possible, but only if you set each instance up so it has its own folder, its own settings, and its own identity.

This isn't a workaround or a hack. MetaTrader has always supported multiple concurrent installations — the trick is knowing the two correct ways to do it, and avoiding the one thing that causes terminals to overwrite each other. That applies whether you're running two instances on a home PC or several across a VPS.

Below is the full setup process for Windows, plus how to tell instances apart once you've got several open, and how to think about resource limits before you add another one.

Why Running One MT4/MT5 Installation Isn't Enough for Multiple Accounts

Here's the scenario that trips up almost everyone the first time: you've got MT4 installed and logged into your personal broker account. You open a prop firm challenge with a different broker, download their MT4 installer, and run it. The installer detects an existing MetaTrader 4 folder, offers to install "over" it or defaults to the same Program Files location, and you click through without noticing. A minute later you're logged into the prop firm account — and your personal account's saved login, chart templates and expert advisor settings are gone, replaced by the new broker's defaults.

Nothing has technically broken. MetaTrader stores its login credentials, chart layouts, indicators and EA settings inside its own installation folder (the "data folder"), not in some shared Windows profile. If two brokers' terminals point at the same folder, the second one simply takes over that folder's contents. There's no conflict warning, because as far as Windows and MetaTrader are concerned, you only ever had one installation.

The fix is to make sure each account you trade has its own dedicated terminal folder from the outset. Once each instance has a separate home, they run independently — different logins, different EAs, different chart setups — with no risk of one instance clobbering another's data.

The Two Ways to Run Multiple Terminals: Separate Installations vs Portable Mode

There are only two legitimate ways to get multiple, independent MT4 or MT5 instances running on the same machine. Which one applies depends on whether your accounts are with different brokers or the same one.

Both approaches solve the same underlying problem — giving each account its own data folder — but from different starting points.

Installing Each Broker's Own Terminal Version

If your accounts are with different brokers, this is the easy case. Every broker distributes its own branded MT4 or MT5 installer, and Windows creates a separate program folder for each one by default. You'll typically see folders like:

• MetaTrader 4 - ICMarkets
• MetaTrader 4 - FTMO
• MetaTrader 5 - Pepperstone

Each of these is a fully independent installation with its own executable, its own data folder, and its own saved login. You can install as many of these as you have brokers, and they won't interfere with one another because Windows never merges them — each installer writes to a uniquely named directory unless you go out of your way to redirect it.

The one thing to watch: during installation, don't manually change the destination path to match an existing MetaTrader folder. Accept the broker's suggested folder name and you'll get separation automatically.

Using the /portable Launch Flag for Same-Broker Duplicates

The harder case is when two accounts run on the same broker and the same MT4/MT5 build — say, two live accounts or a demo and a live account with one broker. You can't just install the same broker's terminal twice through the normal installer; it will detect the existing installation and update it rather than create a second one.

The solution is MetaTrader's /portable launch flag, which forces the terminal to store its data (login, settings, MQL files) inside its own program folder instead of in the Windows user profile. That makes it possible to have several fully independent copies of the same build coexisting on one machine. Steps:

1. Locate the existing installation folder (commonly under C:\Program Files or C:\Program Files (x86)).
2. Copy the entire folder to a new location — for example, C:\MT4-Broker-Account2.
3. Inside the copied folder, find terminal64.exe (or terminal.exe for older 32-bit builds).
4. Right-click it and choose "Create shortcut."
5. Right-click the new shortcut, open Properties, and edit the Target field to add /portable at the end, with a space before it — for example: "C:\MT4-Broker-Account2\terminal64.exe" /portable
6. Rename the folder and shortcut something you'll recognise later, such as "MT4-Broker-Account2" rather than a generic default.

Launch the shortcut and you'll get a fresh terminal window that saves everything — login, chart templates, EA settings — inside its own folder rather than the shared profile location. Log in to your second account here and it will stay put, independent of the original instance.

Setting Up Multiple Terminals on a Windows PC

Once you understand the two methods above, the practical setup on a home PC is mostly about staying organised from the start. A workflow that avoids confusion later:

1. Create clearly named top-level folders before installing anything — for example C:\MT4-Personal and C:\MT4-PropFirm.
2. Install or copy each terminal into its matching folder rather than letting installers pick their own default location.
3. For different brokers, run each broker's installer and point it at the relevant folder.
4. For same-broker duplicates, use the copy-and-/portable method described above, placing each copy in its own named folder.
5. Create a desktop shortcut for each instance, rename it to match the account (e.g. "MT4 – Personal", "MT4 – Prop Firm"), and pin each one to the taskbar separately.
6. Log into the correct account in each instance and confirm the login sticks after closing and reopening the terminal.

Pinning each shortcut separately to the taskbar matters more than it sounds — with several MetaTrader windows open, Windows will otherwise group them under one generic icon, and you'll be clicking through unlabelled thumbnails to find the account you want.

Setting Up Multiple Terminals on a VPS

If you're running several terminals so they stay logged in and connected around the clock — common for prop firm challenges with strict connectivity rules, or for anyone running expert advisors — a Windows Server VPS is the usual solution rather than leaving a home PC on permanently.

The setup process on a VPS is identical to the PC steps above: separate installer folders for different brokers, the /portable flag and folder copy for same-broker duplicates, distinct shortcuts, and clear naming. Windows Server behaves the same way as desktop Windows for MetaTrader's purposes, so there's nothing VPS-specific to learn beyond the initial remote desktop connection.

What is worth checking before you add another instance is the VPS plan's storage and RAM allocation. VPS plans marketed at traders vary widely in specification, and the number of terminals a given plan can comfortably run depends on how many charts, indicators and expert advisors each one is carrying, not just the account count. Check your provider's listed RAM and disk space, and treat any new instance you add as a real increment in load rather than something the machine will absorb for free — running out of memory mid-session is what causes a VPS to freeze or a terminal to disconnect at the worst possible moment.

Telling Instances Apart When Several Are Open

With three or four MetaTrader windows open, they can look identical at a glance — same layout, same default title, same icon. A few adjustments make it obvious which window belongs to which account:

• Rename the window title. Go to Tools > Options, select the account or server tab, and set a custom description or comment that will show in the terminal's title bar instead of the generic account number.
• Use different colour schemes per instance. Right-click a chart, choose Properties, and pick a distinct background or candle colour set for each account — a dark theme for the personal account, a light theme for the prop firm account, for instance.
• Apply different chart templates. Save a named template per instance so the indicators and layout look visually distinct even before you check the title bar.
• Rename the taskbar shortcut and desktop icon to match, as covered in the setup steps above, so hovering over a taskbar icon immediately tells you which account it is.

None of this changes functionality — it's purely about reducing the chance of placing a trade on the wrong account because two windows looked the same.

Avoiding Data Folder and Login Conflicts

If you've followed the steps above and a terminal still seems to overwrite another's settings, the cause is almost always that both instances are pointing at the same data folder rather than two separate ones. You can check this directly:

1. Open a running terminal instance.
2. Go to File > Open Data Folder.
3. Note the folder path that opens — it should be inside the specific instance's own program folder if you launched it with /portable, or inside a uniquely named broker folder if it's a separate installation.
4. Inside that folder you'll find MQL4 or MQL5 (holding your EAs, indicators and scripts), a config subfolder with the terminal's settings file, and the saved login profile.
5. Repeat for each other running instance and confirm the paths are all different.

If two instances show the same data folder path, that's the conflict: they're sharing one set of MQL files, one config, one login. The fix is to redo the setup for one of them — copy it to a genuinely separate folder and relaunch with the /portable flag, or reinstall from the broker's own installer rather than the shared one. Once each instance has its own distinct data folder, they operate completely independently: an EA update, a template change or a fresh login in one has no effect on the others.

How Many Terminals Can One PC or VPS Realistically Handle

There's no fixed number that works for everyone. What matters isn't the terminal count on its own but the combination of factors behind it: how much RAM and CPU the machine has to start with, how many charts each terminal has open, whether any of them are running expert advisors that poll the market continuously, and how many other applications are competing for the same resources.

A useful way to reason about it, rather than relying on a single number, is to add instances one at a time and watch for the practical warning signs rather than assuming a ceiling in advance:

• Chart redraws that noticeably lag when you scroll or switch timeframes.
• Orders taking visibly longer to execute or confirm than usual.
• The machine itself — PC or remote VPS session — becoming sluggish to navigate even outside MetaTrader.
• Task Manager (or the VPS equivalent) showing memory or CPU consistently near its limit with the terminals you already have open.

If any of these show up as you add a new instance, that's your practical ceiling for the current hardware — not a number you can plan around from something you read, but something specific to your machine's specification and how heavily each terminal is configured. The fix, in order of effort, is usually to close instances you're not actively trading, trim the charts and indicators running per terminal, or increase the RAM allocation on the PC or VPS plan.

For traders who find themselves juggling several local terminals purely to keep personal, prop firm and multi-broker accounts organised, it's worth noting there's a different route that avoids local terminals altogether. MarketSync connects to each MT4 or MT5 account directly by broker server, account number and trading password, rather than by installing or running a terminal on your device. Because it runs entirely in the cloud, there's no VPS to maintain and no computer that needs to stay switched on — each connected account, whether personal, prop firm, or with a different broker, is configured independently with its own copy settings and risk rules under Account setups → MT4/MT5 Accounts. That doesn't replace running MetaTrader itself for chart analysis or manual trading, but it does remove the need to manage several terminal windows just to keep multiple accounts organised. Note that MarketSync's base plan includes one connected MT4/MT5 account, and additional accounts require purchasing extra account slots.

Frequently Asked Questions

Can I run MT4 and MT5 at the same time on one computer?

Yes. MT4 and MT5 are separate applications with separate installation folders by default, so they never conflict with each other in the way two MT4 instances from the same broker can. You can have both open simultaneously, each logged into its own account, with no special setup required.

Will running multiple terminals get me flagged or banned by my broker?

Running several terminal instances on your own machine — even connected to different brokers — is a normal part of how MetaTrader is designed to be used and isn't itself something brokers monitor for. Any account restrictions relating to how you trade (rather than how many terminals you run) would come from your specific broker's or prop firm's terms, which this article can't speak to.

Do I need a VPS to run multiple MT4/MT5 terminals?

No — a home PC handles multiple terminals fine as long as it's on and connected whenever those accounts need to be active. A VPS becomes useful when you need the terminals running continuously, such as for expert advisors or prop firm challenges with connectivity requirements, since it removes the need to keep a personal computer switched on around the clock.

Can two terminal instances share the same Expert Advisor license?

This depends entirely on how the EA's licensing is set up by its developer — some are tied to a single account or machine, others allow multiple activations. Check the specific EA's licensing terms rather than assuming, since MetaTrader itself doesn't restrict this at the terminal level.

How do I update several MT4 installations without breaking their settings?

Update each instance separately through its own Help > Check for Updates, rather than reinstalling over the top with a fresh installer. Because each instance keeps its data folder separate (as covered above), updating one terminal's executable doesn't touch another's settings, logins or EA files as long as you're updating in place rather than reinstalling into a different folder.

Does running multiple terminals slow down my internet or broker connection?

Each terminal maintains its own lightweight connection to its broker's server, and the bandwidth involved is minimal even with several running at once — it's typically CPU and RAM load from charts, indicators and EAs that causes slowdown, not internet bandwidth. A standard home broadband connection or basic VPS network allocation is rarely the bottleneck.

Getting Set Up Without the Guesswork

The core of running multiple MT4/MT5 terminals comes down to one habit: give every account its own folder before you log in, whether that's through a broker's own installer or a /portable copy. Get that right from the start and the rest — naming, colour schemes, taskbar pins — is just housekeeping to keep windows straight once you've got several open, and watching for lag as you add instances tells you when the machine itself needs more resources rather than fewer terminals.

If the terminal-juggling itself is what you're trying to avoid rather than the accounts, it's worth connecting your MT4/MT5 accounts to MarketSync instead and managing their copy settings from one place in the cloud, without a VPS or a local install to keep running.