Mullvad Browser

ApplicationMullvad VPN and Tor Project

Also called mullvad firefox, mullvad privacy browser

Mullvad VPN and Tor ProjectBrowsers

A Tor Project browser without the Tor network, meant to pair with a VPN. On Windows the process is firefox.exe.

What you need to know

Mullvad Browser is not Tor Browser and not the Mullvad VPN app.

The Tor Project and Mullvad ship a hardened Firefox that does not use Tor circuits. firefox.exe here is not Mozilla Firefox and not the Tor bundle.

What is it?: Web browser
Still current?: Yes, see Current status
Official download?: Use the vendor link in this article

Feex says

If firefox.exe sits in a Mullvad Browser folder, I do not treat it as Tor Browser. There is no Tor network here. I also would not uninstall the Mullvad VPN app to remove this browser.

What is Mullvad Browser?

Mullvad Browser is a Firefox-based privacy browser built with the Tor Project. It does not start tor.exe. The window process is firefox.exe in the Mullvad Browser folder.

If you have never used it

If you want Tor Browser hardening without onion routing, this is Mullvad Browser. It is not Tor Browser and it is not the Mullvad VPN app. Download it from mullvad.net/en/download/browser. Traffic does not go over Tor. Pair it with a VPN if that is the plan. The process is still firefox.exe.

What is it used for?

Fingerprint-resistant browsing

Letterboxing and Tor Browser-style defaults without a Tor circuit.

Pair with a VPN you already run

Mullvad documents this as a browser to use with a trustworthy VPN. The VPN is a separate app.

No onion routing

.onion sites do not work here the way they do in Tor Browser. That is the product split.

Who is it for?

People who want Tor Browser defenses without Tor
Mullvad VPN users who were pointed at this browser
Anyone who saw firefox.exe and assumed stock Firefox or Tor Browser

Current status

Mullvad Browser (2023) is a current web browser from Mullvad VPN and Tor Project. The vendor still points Windows users at https://mullvad.net/en/download/browser.

How old is it?

Mullvad and the Tor Project launched this browser in 2023. It is much newer than Tor Browser (2008). Current builds follow the same hardening family without the Tor client.

Versions

Major channels first. Exact build numbers are not all verified here.

Current Windows build

System requirements

Values follow the publisher's public guidance. Workload still changes the real need.

Minimum

Minimum system requirements
Operating system	Windows 10 or later, 64-bit only, per Mullvad
RAM	Enough for Windows plus this app. Heavy projects want more.

Resource profile

CPU demand: Follows what you open inside the app
RAM demand: Follows documents, tabs, or libraries

Installed processes

These executables belong to this product when it is installed.

Installed processes
firefox.exe	Main Windows executable

Startup components

Launch it when you want that session. It is not meant to replace Edge as a silent Windows Startup item.

File locations

Common Mullvad Browser locations
Typical install	A Mullvad Browser folder you chose, not Program Files\Mozilla Firefox

File formats

HTMLPDFPNGJPEG

Common problems

People expect .onion to open

This browser has no Tor client. Use Tor Browser for onion sites.

VPN app mixed up with the browser

Mullvad VPN is a separate install. Quitting the VPN does not close this firefox.exe.

Getting unstuck

Check the folder name for Mullvad Browser

Tor Browser and Mozilla Firefox also use firefox.exe. Open file location.

Verify the download from mullvad.net

Mullvad documents signature checks. A forum zip is the wrong file.

Do not install Tor on top of this folder

Adding tor.exe by hand is not the supported setup. Use Tor Browser if you need Tor.

Alternatives

Tor Browser if you need the Tor network. Stock Firefox if you want a normal Gecko browser. The Mullvad VPN app is not a browser.

Official help and downloads

Start with the vendor. Random exe sites are not a support channel.

Official contacts
Download	mullvad.net/en/download/browser Official installer or vendor page
Help	mullvad.net/en/help/tag/mullvad-browser Vendor support
Official site	mullvad.net/en/download/browser Start here, not a random exe host

Related hardware

A modest 64-bit Windows 10 or 11 PC is enough. Delay usually comes from a VPN path, not a missing GPU.

Technical details

Vendor version numbers change. This article does not pin a build.

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Feex Reviewed. How we research.

Mullvad Browser official site · Vendor product page
Mullvad Browser help · Vendor support
Foxhole process map · First-party samples on Windows PCs. Not a lab benchmark.

Was this article useful?

A yes or no is enough. Pick a reason if you want, or add a short note.