Send Fax From Windows 11: Everything You Need to Know

By Alexey Spasskiy · Published March 12, 2025 · Updated June 8, 2026 · 13 min read

Quick answer: The fastest way to send a fax from Windows 11 is an online service like mFax.to — open your browser, upload a document, enter the fax number, and send. No modem, no phone line, no installation required. If you prefer the built-in route, Windows 11 does include Windows Fax and Scan — but it is not pre-installed (unlike Windows 10) and still requires a USB fax modem and analog landline.

Windows 11 changed how faxing works compared to Windows 10. The classic Windows Fax and Scan tool is no longer included by default — Microsoft moved it to Optional Features, and it is completely unavailable on ARM64 devices such as the Surface Pro X and Snapdragon Copilot+ PCs.

The good news: you do not need any of that hardware. Modern online fax services let you send a fax from Windows 11 the same way you send an email — right in a web browser, in under two minutes. This guide explains every method that actually works in 2026, with Windows 11-specific steps for each.

Which Method Is Right for You?

Method 1: Use an Online Fax Service (Recommended)

What you need: A Windows 11 PC, any web browser, and an internet connection. No modem. No phone line. No software to install.

Online fax services accept your digital file, convert it to a fax-compatible format on their servers, and transmit it over telephone infrastructure. The recipient's fax machine receives it like any other fax. From your side, the whole process looks like uploading a file.

mFax.to is the most straightforward option for Windows 11 users: upload a document, enter a fax number, click Send. Delivery confirmation lands in your dashboard within seconds to a few minutes. Over 5 million users have sent faxes this way — no modem involved.

Steps to Send a Fax from Windows 11 Using mFax.to

Free Options for One-Off Faxes

If you only need to send a fax occasionally and don't want a subscription:

• GotFreeFax — 2 free faxes per day (up to 3 pages each) to US/Canada. No account required, just email verification. No ads on cover page.
• FaxZero — 5 free faxes per day (up to 3 pages each) to US/Canada. Free faxes include a small ad on the cover page.
• FaxDrop — 2 free faxes per month. Works in any browser, no account needed, HIPAA compliant.
• Fax.Plus — 10 free pages after signup and phone verification.

For anything beyond occasional use, a paid subscription works out significantly cheaper than maintaining an analog phone line.

Method 2: Windows Fax and Scan (Optional Feature)

Windows 11 includes Windows Fax and Scan — but unlike Windows 10, it is not pre-installed. You must add it manually as an optional feature. And if you have an ARM64 device, it is not available at all.

What You Need Before Installing

Before installing Windows Fax and Scan, confirm you have:

• A USB fax modem — most modern laptops and PCs do not have a built-in modem. You need an external USB device such as the USRobotics USR5637 ($30) or HiRO H50113 ($25).
• An analog (POTS) phone line — a traditional copper landline from a phone company. VoIP lines from cable providers (Comcast, Spectrum, Cox) do not reliably work with fax modems because they digitize the signal, causing transmission errors. T.38 VoIP lines are the exception, but they require a SIP provider that explicitly supports T.38.

If you have both, proceed to install. If not, skip to Method 1.

How to Install Windows Fax and Scan on Windows 11

1. Open Settings (Win + I).
2. Go to System → Optional Features.
3. Click "View features" (next to "Add an optional feature").
4. In the search box, type Windows Fax and Scan.
5. Check the box next to it, click Next, then click Install.
6. Wait for the installation to complete (approximately 10–20 minutes).
7. Search for "Windows Fax and Scan" in the Start menu to launch it.

How to Set Up Windows Fax and Scan on Windows 11

Once installed:

1. Connect your modem — plug the USB fax modem into any USB port. Connect the modem's LINE port to your wall phone jack with a standard phone cable.
2. Open Windows Fax and Scan — search for it in Start and launch it.
3. Add a fax account — go to Tools → Fax Accounts → Add.
4. Select your modem — choose Connect to a fax modem. Windows detects the attached device automatically. Name the account and click Next.
5. Verify the connection — in Tools → Fax Settings, enable "Allow the device to send faxes". You should hear a dial tone through the modem if everything is connected correctly.

How to Send a Fax with Windows Fax and Scan

Once your modem is configured:

1. Click New Fax in the toolbar.
2. In the To field, enter the recipient's name and fax number.
3. Click the Attachments paperclip icon to add your document. Windows converts it to a fax-compatible format automatically.
4. Add a subject line and any cover page notes.
5. Click Send. The modem dials the number and transmits the document. A delivery confirmation appears in the app when done.

To receive faxes, go to Tools → Fax Settings and enable "Allow the device to receive fax calls". Set the number of rings before answering. The modem must remain connected and the app must be open (or running minimized) to receive incoming faxes.

Method 3: Send a Fax from Outlook on Windows 11

If your organization uses Microsoft Outlook and subscribes to a fax service that supports email-to-fax, you can send faxes without leaving your inbox.

How Email-to-Fax Works

Your fax service assigns a gateway email address in the format:

[faxnumber]@[provider-gateway-domain]

You compose an email to that address, attach your document, and send it. The provider's servers convert the email attachment to a fax and transmit it. The recipient's fax machine receives it like any other fax. A confirmation email arrives in your inbox when delivery is complete.

Steps for Outlook Email-to-Fax

1. Open a new email in Outlook.
2. In the To field, enter the gateway address — for example, 5551234567@efaxsend.com for eFax, or 5551234567@fax.plus for Fax.Plus. Your provider gives you the exact gateway domain after signup.
3. Attach your document — PDF is recommended for best fax quality. Word, Excel, and most image formats are also accepted by major providers.
4. Add a subject line — this typically becomes the cover page subject line.
5. Click Send. The provider converts and transmits the fax. A delivery confirmation email arrives when complete.

For a detailed walkthrough, see our guide to faxing from Outlook or our fax from email guide.

Method 4: Fax from a Connected Printer on Windows 11

If your office has an all-in-one printer (a multifunction device with fax capability), you may be able to send faxes from Windows 11 through it — provided the printer has a phone line connected.

What You Need

• A multifunction printer (MFP) with a built-in fax modem — common models include HP OfficeJet Pro, Canon PIXMA MX series, and Brother MFC series.
• The printer's fax port connected to an analog phone line.
• The printer's Windows 11 driver installed (usually handled automatically via Windows Update when the printer is connected).

How to Fax via a Networked Printer

1. Open your document in any application — Word, PDF viewer, Notepad, or any other app.
2. Go to File → Print (or press Ctrl + P).
3. Select your fax printer from the printer list — it typically appears as something like Fax (HP OfficeJet Pro 9015) or Canon Fax.
4. Click Print — a fax dialog appears asking for the recipient's fax number.
5. Enter the fax number and click Send.

The document routes through the printer's built-in fax modem and sends over the phone line attached to the device.

All Methods Compared

Verdict: For most Windows 11 users — especially those on modern laptops and ARM64 Copilot+ PCs without legacy hardware — an online fax service is the fastest to set up, cheapest to operate, and works everywhere. Windows Fax and Scan makes sense only if you already have the hardware and a dedicated analog landline.

Troubleshooting Windows 11 Fax Issues

Windows Fax and Scan is missing from Optional Features

If you go to Settings → System → Optional Features → View features and do not see Windows Fax and Scan in the list:

• Check your processor architecture: Go to Settings → System → About. If "System type" says ARM64-based processor, the feature is not available for your device — use an online service instead.
• Try Control Panel: Press Win + R, type optionalfeatures, press Enter. In the Windows Features dialog, look for "Windows Fax and Scan" under Print and Document Services.

Windows Fax and Scan disappeared after a Windows update

This is a known intermittent issue with Windows 11 (reported extensively in late 2025). Microsoft released a bug fix in December 2024 that addressed a related fax transmission issue, but some users still report the feature vanishing post-update.

Fix: Go back to Settings → System → Optional Features and reinstall it. If it reinstalls but faxing still fails, restart the Fax service: press Win + R, type services.msc, locate Fax, right-click, and choose Restart.

"No modems detected" in Windows Fax and Scan

The app can't see your USB fax modem:

1. Unplug the modem and plug it into a different USB port.
2. Open Device Manager (Win + X → Device Manager) and look for the modem under Modems. A yellow warning icon means the driver failed — right-click and choose Update driver.
3. Download the latest driver directly from the modem manufacturer's website (USRobotics, HiRO, etc.) and install manually.

Fax sends but recipient gets a blank page

The file format may not have converted correctly. Try saving your document as a PDF first using File → Print → Microsoft Print to PDF, then attaching the PDF to the fax. PDFs convert more reliably than Word documents or images.

"Fax transmission failed" error

Three common causes:

• Wrong number format — for US faxes, try 1 + area code + 7-digit number. Some modems need the leading 1.
• VoIP line interference — your phone line goes through a cable/fiber provider and is not a true analog line. Switch to an online service.
• Recipient's machine is busy — fax machines can only receive one fax at a time. Wait 10–15 minutes and retry.

For a full list of fax error codes and their meaning, see our fax error codes guide.

The Real Cost of Windows Fax and Scan in 2026

The built-in route sounds free — but the hardware and line costs add up quickly:

For occasional faxing, a pay-per-fax online service costs a fraction of that. For regular faxing — even once a week — a monthly subscription to mFax.to costs far less than maintaining a dedicated landline, and you gain the ability to send faxes from any device, including your phone.

Sending and Receiving Faxes: Does Windows 11 Support Both?

Sending faxes: Yes — all four methods above support sending.

Receiving faxes: Depends on the method.

• Windows Fax and Scan: Yes — enable "Allow the device to receive fax calls" in Fax Settings. The modem must stay connected and the PC must remain on to receive incoming faxes.
• Online services (mFax.to): Yes — you get a virtual fax number. Incoming faxes arrive in your dashboard and optionally as email attachments. The PC does not need to be on.
• Outlook email-to-fax: Yes, if your provider supports it. Incoming faxes arrive as email attachments.
• MFP printer: Yes — the printer receives directly over the phone line, independent of your PC.

For a complete walkthrough on receiving faxes online, see our guide to receiving faxes online.

Frequently Asked Questions

Can I send a fax from Windows 11 without a phone line?

Yes. Online fax services like mFax.to work entirely over the internet. You upload your document, enter the recipient's fax number, and send — no modem or phone line required. The built-in Windows Fax and Scan app requires both a USB fax modem and a physical analog phone line.

Is Windows Fax and Scan available on Windows 11 in 2026?

Yes, as an optional feature for x64 (Intel/AMD) systems — but not ARM64. Install it via Settings → System → Optional Features → View features. Microsoft released a bug fix for Windows Fax and Scan in December 2024. Some users report it disappearing after Windows updates, which is a known intermittent issue; reinstalling it from Optional Features usually resolves it.

Can I fax from a Windows 11 laptop without buying any hardware?

Yes. Use an online fax service in any browser — no modem, no phone line, no additional hardware. This is the most practical option for laptops, which have not included built-in fax modems for over a decade.

What is the best free way to fax from Windows 11?

For zero-cost faxing: GotFreeFax (2 faxes/day, 3 pages each, US/Canada, no account needed) or FaxZero (5 faxes/day, 3 pages each). For more volume with a free trial, mFax.to lets you send faxes without an upfront subscription. See our guide to free online fax services for a full comparison.

Does the mFax app work on Windows 11?

Yes — mFax.to works in any modern web browser on Windows 11, including Edge, Chrome, and Firefox. There is no Windows desktop app to install; everything runs in the browser. For business teams, mFax Business adds virtual fax numbers, HIPAA compliance, shared team inboxes, and audit logs from about $9/mo (billed annually) — a fully customizable plan you build yourself, picking the exact seats and pages you need rather than settling for fixed tiers.

Summary: Faxing from Windows 11 in 2026

Windows 11 is not the fax-friendly OS Windows 10 was — the built-in tool was demoted from default to optional, and it's gone entirely on ARM64 devices. But that hardly matters, because the modern alternatives are faster to set up, cheaper to run, and more capable.

• No hardware? No problem. mFax.to handles everything in the browser — upload, send, confirm, done in under 2 minutes.
• Already have a USB modem and landline? Install Windows Fax and Scan from Optional Features and follow the setup steps above.
• Corporate Outlook user? Email-to-fax keeps you in your existing workflow with no new apps.
• Office printer with fax? Print-to-fax works from any Windows 11 application.

For personal faxing, visit mFax.to, upload your document, and send. No modem. No phone line. No store trip.

For business teams, mFax Business gives you virtual fax numbers, HIPAA compliance, and a shared dashboard — starting at about $9/mo.

On Windows 10? See our guide to faxing from Windows 10. On a Mac instead? Check out how to fax on Mac. Need to send from a browser regardless of OS? Our guide to faxing from a computer covers every platform.