Windows Fax Not Working, Windows Fax and Scan Missing, No Scanners Detected, Could Not Complete Scan, and Fax Modem Problems

Windows Fax and Scan sits in an awkward place: it is old enough that many users forget it is still part of Windows, but important enough that scanners, all-in-one printers, fax modems, and office workflows still depend on it. The usual failure is not one single error. 

Users report No scanners were detected, Could not complete scan, missing wfs.exe, scan profiles that no longer see the device, HP/Epson/Canon printers that print but do not scan, or fax sending errors on Windows 11 machines that no longer have a physical fax modem.

Problem: Windows Fax and Scan is missing after moving to Windows 11

What users observed: A Windows 11 user reported that the system worked normally after upgrading, but Windows Fax and Scan appeared to be missing. The error referenced \System32\wfs.exe, and copying the missing file from an older Windows 10 system did not fix the problem because the feature itself was absent, not just one file. 

What was tried: Users searched for Windows Fax and Scan, tried opening it from Windows Tools, checked whether wfs.exe existed, ran system repair commands, copied the file from another computer, and looked for the feature inside Windows optional components.

How this played out: The working repair path was feature installation, not file copying. Users installed Windows Fax and Scan through Windows optional features or Windows Features under Print and Document Services, restarted Windows, and then opened the app again. When the whole feature was absent, replacing wfs.exe alone did not restore the app.

Problem: Windows Fax and Scan opens but fax sending fails on Windows 11

What users observed: A Windows 11 user reported that Windows Fax and Scan was installed, but an error appeared when trying to send a fax. The repair path included resetting the Windows Fax and Scan feature through Windows Features and then checking whether a physical fax modem was actually present. Windows Fax and Scan fax sending still depends on a modem and phone line, not only the app.

What was tried: Users opened Windows Features, expanded Print and Document Services, unchecked Windows Fax and Scan, restarted, re-enabled it, restarted again, and then checked Device Manager for a modem entry. Users also checked whether a fax account was configured inside Windows Fax and Scan.

How this played out: The fix split into two layers. If the app itself was broken, users reset Windows Fax and Scan by removing and reinstalling the feature. If the app opened but sending still failed, users checked for a physical fax modem, modem driver, phone-line connection, and fax account setup. Fax sending could not be repaired by scanner-driver work because it required fax hardware or a configured fax service path.

Problem: Windows Fax and Scan says No scanners were detected

What users observed: Users opening Windows Fax and Scan saw No scanners were detected even though a printer or scanner was connected. In some cases, the printer side worked normally, but the scan side was invisible to Windows Fax and Scan. That makes the issue different from a printer queue problem because the scanner device path is separate from printing.

What was tried: Users checked whether the scanner was powered on, reconnected USB, tried another USB port, restarted the PC, checked Device Manager, restarted Windows Image Acquisition, and reinstalled the scanner driver. A Microsoft Answers case for a lost Windows Fax and Scan scanner connection specifically pointed to checking the connection, restarting WIA, uninstalling the scanner in Device Manager, reconnecting it, and updating the scanner driver.

How this played out: The repair path was WIA and scanner-driver recovery. Users restarted Windows Image Acquisition, removed the broken scanner entry from Device Manager, reconnected the scanner, and installed the scanner driver again. Windows Fax and Scan could only detect the scanner after Windows rebuilt the scanner device path.

Problem: Windows Fax and Scan loses connection to an Epson scanner

What users observed: A user with an Epson WF-2650 reported that Windows Fax and Scan lost connection to the scanner. The printer side could still be recognized, but scanning no longer worked through Windows Fax and Scan. The repair path was focused on WIA, Device Manager, USB port changes, driver reinstall, and Windows update checks.

What was tried: Users restarted WIA, uninstalled the scanner from Device Manager, reconnected the scanner, updated the Epson driver, checked Windows updates, and tried a different USB port.

How this played out: The fix was scanner re-detection. Users removed the scanner entry, restarted the Windows scan service, reconnected the scanner on a clean USB path, and reinstalled the Epson driver. When Windows Fax and Scan lost the scanner while the printer remained visible, the repair stayed with scanner registration rather than the print queue.

Problem: Windows Fax and Scan shows “Could not complete scan”

What users observed: An HP DeskJet 2720 user reported that Windows Fax and Scan returned could not complete scan. The repair path included checking the connection, reinstalling printer/scanner drivers, checking the scan profile, trying HP Smart or the printer panel to confirm the scanner worked outside Windows Fax and Scan, and checking firewall/security behavior.

What was tried: Users restarted the printer and PC, checked USB or Wi-Fi connection, reinstalled the HP driver, checked Windows Fax and Scan profiles, tried scanning from HP Smart or the printer control panel, and checked firewall or antivirus behavior.

How this played out: The fix was to isolate Windows Fax and Scan from the scanner hardware. Users tested scanning in HP Smart or from the printer panel first. If that worked, the scanner hardware was treated as functional and the repair moved to Windows Fax and Scan profile selection, HP driver reinstall, WIA restart, and security software allowance.

Problem: Windows Fax and Scan fails after Windows 11 24H2 update

What users observed: Users reported scanner connection failures after Windows 11 version 24H2. In an HP scanner case, the update was described as stopping scanner connection, and the repair path moved through Device Manager, full software reinstall, WIA, Print Spooler, RPC services, optional driver updates, and alternate scan apps such as Windows Fax and Scan or HP Smart.

What was tried: Users checked Device Manager for a missing scanner or yellow warning icon, removed and reinstalled printer/scanner software, restarted WIA and Print Spooler, checked Windows optional driver updates, and tried Windows Fax and Scan or HP Smart.

How this played out: The fix was Windows update cleanup plus scanner-stack repair. Users checked whether the scanner still appeared in Device Manager, installed the full scanner-capable package again, restarted WIA, and tested alternate scan apps. If Windows Fax and Scan failed but HP Smart or another model app worked, the scanner was kept in use through the working app while the Windows scan layer was repaired.

Problem: HP printer prints but Windows Fax and Scan cannot scan

What users observed: A Windows 11 user with a new PC and HP printer reported that printing worked but scanning did not. The repair path identified a common cause: Windows may be using a basic print-only driver, so the scanner side is missing even though printing works.

What was tried: Users checked whether the scanner was listed under the HP device, installed HP Smart or the full HP driver package, restarted the printer and PC, tried Windows Scan, and checked whether firewall/security tools blocked scanner communication.

How this played out: The fix was full HP software installation. Users removed the print-only setup, installed HP Smart or the full HP driver package with scanner components, restarted the printer and PC, and then tested scanning again. Printing working did not prove that the scanner driver was installed.

Problem: Windows Fax and Scan cannot scan over Wi-Fi

What users observed: Network all-in-one printers can print over Wi-Fi but fail to scan through Windows Fax and Scan. The PC may still see the printer, but the scanner path requires separate communication and may be blocked by network changes, firewall rules, or an incomplete software package.

What was tried: Users confirmed that the PC and printer were on the same Wi-Fi network, checked the printer IP address, tested scanning in the model app, checked firewall/security software, removed and re-added the device, and installed the full driver package.

How this played out: The repair path was network scan registration. Users re-added the device through the full software package, checked same-network status, allowed scan communication through security software, and tested the model scan app. If Windows Fax and Scan still failed while the vendor app worked, the issue stayed with Windows Fax and Scan/WIA rather than Wi-Fi printing.

Problem: Windows Fax and Scan cannot scan over USB

What users observed: USB scanners and all-in-one printers may be detected by Windows but not usable in Windows Fax and Scan. The device can appear as a printer, unknown device, or scanner with a broken driver.

What was tried: Users changed USB ports, tried another cable, removed the scanner from Device Manager, disconnected USB, installed the full driver package, restarted Windows, and reconnected USB after setup was ready.

How this played out: The fix was USB install-order control. Users disconnected the scanner, removed the broken entry, installed the correct scanner-capable package, restarted, then reconnected USB. If Windows attached the device too early as a print-only or generic device, Windows Fax and Scan could not see the scanner.

Problem: Windows Fax and Scan cannot see a network scanner after router change

What users observed: After a router change, Wi-Fi password change, or new network name, the printer may print again after being re-added, but the scanner remains missing from Windows Fax and Scan. The scan profile may still point to the old network route.

What was tried: Users checked the current printer IP address, reconnected the printer to Wi-Fi, removed old printer/scanner entries, added the device again, and tested scan apps.

How this played out: The fix was to rebuild the scanner’s network route. Users removed the stale scanner entry, re-added the device using the current network address, and created a new scan profile. If the model app found the scanner but Windows Fax and Scan did not, WIA/profile repair came next.

Problem: Windows Fax and Scan fails because Windows Image Acquisition is stopped

What users observed: Windows Fax and Scan depends on the Windows scanner service path. When WIA is stopped or stuck, scan apps may fail to detect scanners or cannot complete scans. Microsoft Answers repair steps for scanner connection problems include restarting Windows Image Acquisition.

What was tried: Users opened Services, found Windows Image Acquisition, restarted it, checked startup state, restarted the PC, and opened Windows Fax and Scan again.

How this played out: The repair path was WIA restart. Users restarted WIA, then retested Windows Fax and Scan. If the scanner returned after WIA restart, the problem was the Windows scan service layer. If it did not, the next steps were driver reinstall, Device Manager cleanup, and USB/network reconnection.

Problem: Windows Fax and Scan says scanner driver is missing

What users observed: Users with all-in-one printers can print but not scan when Windows uses a basic driver. In the HP Windows 11 case, the repair path specifically moved to reinstalling the full HP driver or HP Smart app because Windows might be using a basic print-only driver.

What was tried: Users checked printer/scanner status, installed the full model package, tested Windows Scan, ran troubleshooters, and checked firewall/security tools.

How this played out: The fix was to install the scanner-capable package. Users removed the basic or print-only setup, installed the full driver/app package for the model, restarted, and confirmed that the scanner appeared. Windows Fax and Scan could not use a scanner driver that was never installed.

Problem: Windows Fax and Scan cannot send fax because there is no modem

What users observed: Users trying to send a fax from a Windows 11 PC sometimes discovered that the system had no fax modem installed. Windows Fax and Scan can open, but fax sending still requires a physical modem and phone line. A Microsoft Answers repair path specifically directs users to check Device Manager for a Modems category when sending fax fails.

What was tried: Users opened Device Manager, checked for a modem, checked the modem driver, connected or tested the phone line, opened Windows Fax and Scan, and reviewed fax account setup.

How this played out: The repair path was modem setup. Users confirmed whether the PC actually had an internal or USB fax modem, installed the modem driver, connected the phone line, then configured a fax account inside Windows Fax and Scan. Without modem hardware or a fax service path, reinstalling Windows Fax and Scan did not make fax sending work.

Problem: Windows Fax and Scan breaks after update but the scanner works in Windows Scan

What users observed: Users sometimes found that Windows Scan or another scan app worked while Windows Fax and Scan failed. That means the device and driver can still function, but Windows Fax and Scan itself is the broken layer.

What was tried: Users opened Windows Scan, opened Windows Fax and Scan, checked WIA, reset scan profiles, and reinstalled the Windows Fax and Scan optional feature.

How this played out: The repair path was app-specific. Users kept using Windows Scan or the model app as the working scan route, then reset Windows Fax and Scan by reinstalling the feature, creating a new scan profile, and checking scanner selection. The scanner hardware was not blamed when another app could scan.