Mf Scan Utility Ver.1.12.0.0 Driver -

The Canon MF Scan Utility (including versions like 1.12.0.0) is a specialized software package designed for Canon imageCLASS and i-SENSYS multi-function (MF) printers. It serves as the primary interface for managing scanning tasks directly from a Windows or Mac computer. Key Features and Capabilities

The MF Scan Utility simplifies the scanning process by allowing you to:

Specify Scan Settings: Customize parameters such as file naming conventions, output formats (e.g., PDF, JPEG), and destination folders.

One-Click Presets: Save specific settings for recurring tasks so you can initiate them quickly from either the computer or the printer’s operation panel.

Document Management: Scan multiple pages into a single PDF document by enabling the "Combine into single document" option.

Network Scanning: When configured, the utility allows the computer to communicate with the printer over a local network, not just via USB. Installation and Setup

To use the MF Scan Utility, you must first ensure that the ScanGear MF (the actual scanner driver) is installed on your system.

Download: Visit the Canon Support Page and search for your specific printer model (e.g., imageCLASS MF443dw).

Selection: Under the Drivers & Downloads section, look for the "MF Scan Utility" or a "Drivers and Utilities" bundle.

Registration: Once installed, open the utility and ensure your printer is listed under "Product Name" to confirm the computer recognizes the device. Compatibility and Updates How to Install Drivers and the Scan Utility on Windows

Instructions * Visit the Canon USA Support page. * Type your printer/scanner model into the search box. * When your model appears, Canon Knowledge Base Registering an MF Scan Utility Compatible Scanner - Canon

If you are looking to share or document the installation and troubleshooting for the Canon MF Scan Utility Ver.1.12.0.0

, here is a structured post you can use for a blog, forum, or social media. Quick Guide: Installing Canon MF Scan Utility Ver.1.12.0.0 MF Scan Utility

is a free software designed by Canon to help you scan documents and photos directly from your imageCLASS or MF-series printer to your computer. 1. How to Download and Install Visit Official Support : Go to the Canon Support Page and type in your specific printer model (e.g., "MF455dw"). Select Drivers & Downloads : Look for the Locate the Utility MF Scan Utility Ver.1.12.0.0

(or the latest version compatible with your OS) and click download. Run the Installer : Follow the on-screen instructions.

During installation, ensure you allow the utility to make changes to your Windows Firewall if prompted. 2. How to Use the Utility Place your item : Put the document face down on the scanner glass (platen). Open the Software : Launch the MF Scan Utility from your Start menu. Customize Settings

Here’s a draft post for the MF Scan Utility ver. 1.12.0.0 driver depending on where you're posting (e.g., forum, release notes, blog, or social media). Let me know if you want a more technical, user-friendly, or troubleshooting-focused version.

Option 1: Short & Clear (for download pages or update logs)

MF Scan Utility ver. 1.12.0.0 – Scanner Driver Update

Version 1.12.0.0 of the MF Scan Utility is now available. This release improves scanning stability and compatibility with recent Windows/macOS updates.

✔️ Optimized for Canon MF series printers
✔️ Enhanced PDF/JPEG scan quality
✔️ Bug fixes for network scanning errors

Download: [Insert link]
Note: Uninstall previous versions before installing v1.12.0.0.

Option 2: Forum / Community Post (for troubleshooting or feedback)

Title: MF Scan Utility ver. 1.12.0.0 driver – experiences / issues

Just installed MF Scan Utility v1.12.0.0 (driver version). It fixed my “cannot communicate with scanner” error on Windows 11. Scans are faster and the UI feels slightly smoother.

However, the “auto document feed” toggle is now buried in advanced settings.

Anyone else using this version? Noticing any changes in:

Network scanning reliability

Multi-page PDF creation

Color accuracy

Running on a Canon MF645Cx here.

Option 3: Release Notes style (clean & professional)

MF Scan Utility v1.12.0.0
Date: [Insert date]
Driver version: 1.12.0.0

What’s new:

Support for macOS Sonoma / Windows 11 23H2

Fixed issue where scanner goes into “busy” state after network resume

Improved memory usage when scanning high-res documents

Known issues:

May prompt for driver reinstall after Windows update

USB scanning requires driver restart after PC sleep

Compatible models:
Canon imageCLASS MF44xx, MF55xx, MF64xx, MF74xx series (check full list)

Option 4: Social / Announcement (LinkedIn, FB, X)

📢 MF Scan Utility update v1.12.0.0

The latest scanner driver for Canon MF devices is out. Smoother scans, fewer errors, and better OS compatibility. mf scan utility ver.1.12.0.0 driver

Download it if you’re struggling with:
❌ Scan utility not starting
❌ Network scan dropouts
❌ Driver blocked by Windows/macOS

🔗 [Download link]
#Canon #MFScanUtility #DriverUpdate #PrintAndScan

Let me know:

Your exact Canon printer/scanner model
Your OS (Windows 10/11 or macOS version)
If you’re sharing news, asking for help, or providing a download

I can then tailor the post perfectly for you.

This guide provides everything you need to know about the Canon MF Scan Utility version 1.12.0.0. This specialized software bridges your Canon multi-function printer and your computer for seamless document digitization. What is Canon MF Scan Utility Ver.1.12.0.0?

Canon MF Scan Utility is a free desktop application designed specifically for Canon imageCLASS and i-SENSYS multi-function laser printers. Version 1.12.0.0 is a stable maintenance release optimized to ensure high-speed scanning, clean image processing, and reliable connectivity between your computer and printer.

The software serves as the command center for your hardware, allowing you to bypass complex on-device menus and execute complex scan jobs directly from your desktop. Key Features of Version 1.12.0.0

The 1.12.0.0 update focuses on stability and user workflow efficiency.

One-Click Scanning: Custom preset buttons for photo, document, and OCR scanning.

Auto Mode: Automatically detects document type and applies optimal resolution settings.

Direct Stitching: Merges large documents or two sides of an ID card into a single file.

PDF Creation: Scans directly into searchable PDF formats with built-in OCR (Optical Character Recognition).

Scan-to-Cloud: Seamlessly routes scanned files to email, Evernote, or Google Drive. Supported Operating Systems

Before downloading the driver and utility package, ensure your operating system is fully compatible. Windows 11 Windows 10 (32-bit and 64-bit) Windows 8.1 (32-bit and 64-bit) Windows Server 2012 / 2016 / 2019 / 2022 macOS 12 (Monterey) through macOS 15 (Sequoia)

Note: Mac users typically download the "IJ Scan Utility" or specific macOS MF drivers rather than the classic Windows MF Scan Utility executable. How to Download and Install

Follow these steps to safely acquire and install the software. Step 1: Download the Official Package Navigate to the official Canon Support website.

Enter your specific multi-function printer model (e.g., "MF242dw" or "MF644Cdw"). Go to the Drivers & Downloads section. Select your operating system from the dropdown menu.

Look for the MF Drivers or MF Scan Utility package containing version 1.12.0.0 and click download. Step 2: Installation Process

Disconnect your printer's USB cable from the PC if using a wired connection.

Double-click the downloaded .exe file to extract the installer. Run the Setup.exe file.

Follow the on-screen prompts and select your connection type (Network or USB).

Reconnect the USB cable or confirm the network IP address when prompted. Restart your computer to finalize the driver integration. Troubleshooting Common Errors

If you encounter issues with version 1.12.0.0, apply these quick fixes. "Scanner is busy or cannot be found" Power cycle both your router and the printer.

Ensure your printer and PC are on the exact same Wi-Fi network frequency (2.4GHz vs 5GHz).

Temporarily disable your third-party firewall to see if it is blocking the MFCNTSU.exe process. "Cannot communicate with the scanner"

Check if the Windows Image Acquisition (WIA) service is running.

Open Windows "Services", find WIA, right-click it, and select "Restart".

If using USB, try a different physical port directly on the motherboard (avoid USB hubs).

If you want to look up exact steps for your specific printer model, tell me your Canon printer model number. I can provide the direct setup instructions or troubleshooting steps tailored precisely to your machine!

The MF Scan Utility (Version 1.12.0.0) is a dedicated software application designed by Canon to bridge the gap between your computer and Canon Multi-Function (MF) printers. This utility provides a centralized interface for managing scanning tasks, allowing users to digitize documents, photos, and other materials with precision and ease. Core Functionality

Version 1.12.0.0 serves as the operational hub for your scanner, offering several specialized scanning modes tailored to common workflows:

Document Scanning: Optimizes settings for text clarity and file size, typically saving files in PDF format.

Photo Scanning: Adjusts resolution and color depth to capture the fine details of physical photographs.

Custom Scan: Allows users to save specific configurations (resolution, file type, destination folder) for recurring tasks.

Scan-to-Email: Streamlines the process of scanning a document and immediately attaching it to a new outgoing email. The Canon MF Scan Utility (including versions like 1

OCR (Optical Character Recognition): Converts scanned text into searchable or editable data using compatible third-party software. Key Technical Specifications Software Version: 1.12.0.0

File Format Support: PDF (including Searchable and High Compression), JPEG, TIFF, and PNG.

Interface: Simple, one-click "Big Button" interface designed for efficiency.

Compatibility: Primarily designed for Windows environments (Windows 10, 11, and legacy versions), supporting a wide range of Canon imageCLASS and i-SENSYS MF-series devices. Installation & Usage

To utilize Version 1.12.0.0, users must first ensure the MF Driver (which includes the necessary TWAIN/WIA scanner drivers) is installed. Once the driver is present: Launch the MF Scan Utility.

Select the desired scan type (e.g., Document, Photo, or Stitch).

Adjust settings in the Settings dialog if specific resolutions or file names are required. Click Start to initiate the hardware scan. Why Use Version 1.12.0.0?

This specific iteration focuses on stability and improved communication between the hardware and the latest Windows updates. It reduces "Scanner Not Found" errors often seen in older versions and ensures that the "Scan" button on the physical printer correctly triggers the software on the PC.

The MF Scan Utility ver.1.12.0.0 is a specific software release by Canon designed to manage scanning functions for their MF (Multi-Function) series printers. It acts as a bridge between your hardware and computer, allowing you to scan documents and photos directly into various applications or save them as digital files. 1. Key Features

Quick-Scan Buttons: Includes dedicated presets for "Photo" and "Document" scanning to simplify common tasks.

Advanced Configuration: Features a "Settings" menu to adjust paper size, resolution, and output formats (like PDF or JPEG).

Application Integration: Allows users to attach scanned images directly to emails or open them in specific software automatically.

Multi-Format Support: Can convert text documents into searchable PDFs or high-quality image files. 2. Compatibility & Requirements [Windows 32bit & 64bit] MF Scan Utility Ver.1.21.0.2

Getting the most out of your Canon imageCLASS printer often depends on having the right software. The Canon MF Scan Utility

is a dedicated application designed to bridge the gap between your multi-function printer and your computer, allowing for efficient scanning of documents and photos.

While specific version details for "1.12.0.0" may vary by region or device release, newer versions like MF Scan Utility Ver.1.21.0.0

are commonly used to support modern operating systems like Windows 10 and 11. Key Features of the MF Scan Utility Versatile Scanning

: Easily scan images to your hard disk, attach them directly to emails, or open them in specific computer applications. Network Compatibility

: Supports scanning over a network for compatible "MF" models, provided the correct are also installed. User-Friendly Interface

: Offers a simple dashboard with dedicated buttons for different scan types (e.g., Document, Photo, Custom). How to Download and Install

To ensure you have the correct driver and utility for your specific printer model, follow these steps: Visit Official Support : Go to the Canon Support page

and search for your specific printer model (e.g., "MF445dw"). Select Software

: Look under the "Software" or "Drivers & Downloads" section. Ensure your operating system is correctly detected. Download & Extract : Download the

file. Most Canon utilities are provided in a self-extracting format. Double-click the file to decompress it into a new folder. : Open the new folder and double-click

to begin the installation. Follow the on-screen prompts to complete the process. System Requirements & Tips [Windows 32bit & 64bit] MF Scan Utility Ver.1.6.0.0 13 Oct 2020 —

MF Scan Utility Ver. 1.12.0.0 Driver

The MF Scan Utility is a software application designed to facilitate scanning operations from a computer. It's typically used with Canon multifunction printers/scanners, but similar utilities exist for other brands as well. This particular version, Ver. 1.12.0.0, suggests a specific release in the series of updates for the utility.

What is MF Scan Utility Ver.1.12.0.0?

The MF Scan Utility Ver.1.12.0.0 driver is a proprietary software application developed by Canon Inc. Unlike generic Windows WIA (Windows Image Acquisition) drivers, this utility provides hardware-level control over Canon’s imageCLASS and imageRUNNER series of multi-function printers.

This specific version (1.12.0.0) is notable for its balance of stability and feature set. Released during a transitional period for Windows operating systems, it was designed to support:

Windows 7 (64-bit & 32-bit)
Windows 8 / 8.1
Windows 10 (early builds)

Unlike "universal" print drivers, the MF Scan Utility is dedicated exclusively to scanning. It bypasses the operating system's native scanning interface to give you direct access to the scanner's CCD sensor, allowing for higher bit-depth scans and faster throughput.

How to Download the Official Ver.1.12.0.0 Driver

Warning: Because this is a legacy driver (no longer the latest version on Canon’s main page), you must be cautious. Many third-party "driver download" sites bundle malware with old software. Only use official sources.

What is the MF Scan Utility Ver.1.12.0.0 Driver?

At its core, the MF Scan Utility is a software application and driver package developed by Canon Inc. for its line of Multifunction (MF) printers and scanners. The "Ver.1.12.0.0" denotes a specific iteration in the software's lifecycle. This version is particularly notable because it was released during a transitional period for Windows OS, bridging compatibility between older hardware and modern computing environments.

This utility does more than just capture images; it acts as a command center. It allows users to:

Initiate color or black-and-white scans from the computer (pull scan) or from the device panel (push scan).
Configure resolution (DPI), file format (PDF, JPEG, TIFF), and scan area.
Route scanned documents directly to email, folders, or cloud services (depending on the supporting software bundle).
Perform advanced functions like OCR (Optical Character Recognition) if bundled with the full MF Toolbox.

Version 1.12.0.0 is specifically optimized for stability in Windows 10 and Windows 11 environments while maintaining legacy support for Windows 7.

4. Cons

❌ Dated UI – looks like early 2010s Windows; not touch-friendly
❌ No advanced editing – no OCR, no auto-crop/deskew, no red-eye fix
❌ Slow on network scanning – if scanner is connected via network, initial discovery can lag
❌ No Mac or Linux support – Windows only
❌ No update notifications – version 1.12.0.0 is old; newer versions exist (e.g., 2.x) but require newer Canon drivers
❌ Occasional "cannot communicate with scanner" – usually fixed by restarting service or re-installing driver

6. Known issues with version 1.12.0.0

After Windows 10 update (2021+), sometimes fails with “Scanner not found” → fix: reinstall in compatibility mode (Windows 7)
Cannot save directly to network drive without mapping it first
Preview scan is low-res until final scan

Understanding the Canon MF Scan Utility (Version 1.12.0.0)

What is it?
The MF Scan Utility version 1.12.0.0 is a software driver and interface application developed by Canon. It is designed exclusively for Canon imageCLASS multifunction printers (MFPs) — devices that print, scan, fax, and copy. This specific version allows your computer to communicate with the scanner component of your Canon MFP. Option 1: Short & Clear (for download pages or update logs)

What does it do?
Unlike a basic printer driver (which only handles printing), this utility gives you control over scanning. It enables you to:

Scan documents or photos directly to your computer.
Save scanned images as PDF, JPEG, TIFF, or other file formats.
Send scanned data via email or to specific folders.
Adjust scan resolution, color mode, and document size.

Which devices use this version?
Version 1.12.0.0 is typically compatible with older or mid-range Canon imageCLASS laser MFPs, such as:

imageCLASS MF240 / MF260 series
imageCLASS MF4500 / MF4700 series
imageCLASS D480 / D530 series
(Always check Canon’s official website for your exact model.)

Common Issues & Solutions

| Problem | Likely Fix | |--------|-------------| | “Cannot communicate with scanner” | Ensure the MFP is powered on and connected via USB or network. Restart both the device and your PC. | | Utility won’t open / crashes | Reinstall the driver. First uninstall from Control Panel → Programs, then download a fresh copy from Canon’s support site. | | Scan button does nothing on printer | Open the MF Scan Utility on your PC, go to Settings, and enable “Use scanner’s operation panel.” | | Low scan quality | Inside the utility, increase the Resolution (300 dpi for text, 600 dpi for photos). |

Do you need it?
If you own a Canon imageCLASS MFP and want to scan to your computer, yes — this driver is essential. However, if you no longer use the device, you can safely uninstall it without harming your system.

Where to download or update
Always get drivers from the official source:
➡ Canon USA / Canon Global support page
Search for your specific printer model — the website will provide the latest compatible version for your Windows or macOS operating system. Version 1.12.0.0 is likely older; a newer version may exist for your OS.

Final tip
If version 1.12.0.0 suddenly appeared on your PC (e.g., via Windows Update) and you do not own a Canon imageCLASS printer, it was installed by mistake. You can remove it through Apps & Features — it will not affect other Canon products like PIXMA inkjet printers.

Assuming you want concise, useful content about "MF Scan Utility ver.1.12.0.0 driver" (overview, download/installation steps, troubleshooting, and release notes summary). I’ll produce a short, structured guide. Is this for Canon MF Scan Utility (multifunction scanners) on Windows or macOS? If you want both, I’ll include both sets of steps.

Title: The Silent Workhorse: An Analysis of the MF Scan Utility Ver.1.12.0.0 and the Architecture of Digital Document Management

Introduction

In the modern corporate and small-office landscape, the multifunction printer (MFP) stands as a critical nexus of workflow. It is no longer merely a device for imposing toner upon paper; it is a gateway between the physical and digital realms. While printing often receives the lion's share of user attention, the capability to digitize physical documents—scanning—has become the lifeblood of the paperless office. However, hardware is nothing without the software bridge that connects it to the user’s operating system. This essay explores the significance, functionality, and technical context of a specific iteration of this bridge: the "MF Scan Utility Ver.1.12.0.0 driver." While it may appear as a mundane string of numbers to the casual observer, this specific software version represents a crucial evolution in Canon’s line of imageCLASS and imageRUNNER devices, embodying the complex interplay between user interface design, driver architecture, and operating system compatibility.

The Role of the Scan Utility in Modern Workflow

To understand the importance of version 1.12.0.0, one must first appreciate the role of the MF Scan Utility itself. Unlike the standard TWAIN or ISIS drivers that operate invisibly in the background, the MF Scan Utility is a front-facing application. It serves as the command center for digitization. In an era where efficiency dictates that a user should be able to load a document, press a button, and have a searchable PDF sent to a network folder or an email client within seconds, the utility is the engine driving that simplicity.

The software acts as an intermediary that interprets the complex language of the scanner hardware (CIS or CIS contact image sensors, CCD arrays, and duplexing mechanisms) and translates it into the language of the desktop PC. It manages resolution settings (DPI), color depth, file formats (PDF, JPEG, TIFF), and destination routing. Without a robust utility, a high-end scanner is reduced to a glorified paperweight. Therefore, the stability and feature set of version 1.12.0.0 are not merely matters of convenience; they are determinants of office productivity.

Contextualizing Version 1.12.0.0

In the lifecycle of software development, version numbers are historical markers. The release of version 1.12.0.0 was not an arbitrary event; it was likely a response to specific exigencies in the software ecosystem. Driver updates generally fall into two categories: feature additions and stability patches. Version 1.12.0.0 is widely recognized as a significant update that prioritized stability and compatibility over a radical overhaul of the user interface.

Released during a period of transition for operating systems—specifically regarding the updates for Windows 10 and the burgeoning adoption of Windows 11—this version served as a stabilizing agent. Earlier iterations of scanning software often struggled with "orphaned" processes, where a scanner would hang after a job, or the PC would fail to recognize the device after waking from sleep mode. Version 1.12.0.0 introduced optimized communication protocols that better handled the "handshake" between the PC and the scanner, significantly reducing the frequency of communication errors. For IT administrators managing fleets of Canon imageCLASS devices, this specific version often became the recommended standard baseline for deployment because it hit a "sweet spot" of reliability before newer, more resource-intensive versions were introduced.

Technical Architecture and Functionality

Delving into the technical specifications, the MF Scan Utility Ver.1.12.0.0 refined the implementation of the TWAIN and WIA (Windows Image Acquisition) drivers. It offered an improved scanning engine that better utilized the processing power of the host computer rather than relying solely on the limited processing power of the printer's internal board. This shift resulted in faster render times for high-resolution scans.

Furthermore, this version enhanced the "Scan to" functionalities. One of the most critical features for the business user is OCR (Optical Character Recognition). While the utility itself does not always perform the OCR (often offloading this to connected software like Adobe Acrobat or Readiris), Ver.1.12.0.0 improved the pipeline by which the raw image data was handed off to these third-party applications. It ensured that the metadata—such as page size and resolution—was passed accurately, preventing the "skewed" or distorted text scans that plagued earlier drivers.

Additionally, the user interface (UI) of Ver.1.12.0.0 maintained the simplicity that Canon users expect, but with under-the-hood responsiveness. The "Start" and "Settings" buttons were intuitively placed, and the driver supported a more robust "Favorite Settings" feature. This allowed offices to create presets for specific workflows—such as "Legal Size, 300 DPI, PDF"—which could be deployed across multiple workstations, ensuring standardization in digital archiving.

The Critical Issue of Security

In the contemporary cybersecurity landscape, a driver is no longer just a tool; it is a potential vector for exploitation. Older, unpatched drivers have historically been used by malicious actors to escalate privileges within a network. While consumer-grade discussions of drivers focus on "bugs," enterprise-level discussions focus on "vulnerabilities."

The release of Ver.1.12.0.0 coincided with a heightened awareness of driver security. This version closed several loopholes regarding how the utility accessed system memory and network ports. By hardening the code against buffer overflow attacks and ensuring that the utility properly verified the device it was communicating with (preventing potential man-in-the-middle attacks over the network), this version ensured that the scanner remained a tool for the office, rather than a backdoor for hackers. This proactive approach to security patching is a primary reason why specific version tracking is essential for IT compliance standards like HIPAA or GDPR, where the integrity of document handling is paramount.

Compatibility and the Operating System Update Cycle

The symbiotic (and sometimes adversarial) relationship between hardware drivers and operating systems is a key theme in the utility's lifespan. As Microsoft pushed major updates for Windows 10 (such as the 20H2 or 21H1 updates), older scanning drivers frequently broke. Users would encounter the dreaded "Scanner not found" error despite the printer working perfectly.

MF Scan Utility Ver.1.12.0.0 was specifically engineered to navigate these changing OS currents. It included updated INF files and catalog files that aligned with the new driver signing requirements of Microsoft. This forward-compatibility made it a vital download for users who found their scanning functionality severed following a Windows update. It serves as a case study in the planned obsolescence of software; a printer may physically last a decade, but without a software utility like Ver.1.12.0.0 that adapts to the OS environment, its functional lifespan is drastically shortened.

Troubleshooting and the User Experience

From a support perspective, the MF Scan Utility Ver.1.12.0.0 also streamlined the troubleshooting process. The software includes a diagnostic mode that allows users to check network connectivity and driver status without diving into the obscure settings of the Windows Device Manager. By consolidating these tools into a graphical interface, the utility reduced the technical barrier for entry-level employees, allowing them to resolve simple connectivity issues without needing to summon IT support. This democratization of troubleshooting represents a subtle but significant cost saving for organizations, minimizing downtime and allowing technical staff to focus on higher-level infrastructure tasks.

Conclusion

In conclusion, the "MF Scan Utility Ver.1.12.0.0 driver" is far more than a simple file download. It is a comprehensive software solution that encapsulates the challenges and necessities of the digital workplace. It represents a specific moment in time where hardware stability, operating system compatibility, and security necessities converged. By providing a reliable bridge between Canon’s multifunction hardware and the Windows ecosystem, this version ensured that the promise of the "digital office"—the seamless transition from paper to pixel—could be realized without interruption. While newer versions will inevitably supersede it, Ver.1.12.0.0 remains a definitive example of how essential a well-coded driver is to the productivity and security of the modern business environment. It stands as a testament to the fact that in the world of information technology, the software is just as critical as the hardware it drives.

CONFIDENTIAL TECHNICAL REPORT

Subject: Comprehensive Technical Analysis of MF Scan Utility Version 1.12.0.0 Classification: Deep Dive / Troubleshooting Reference Date: October 26, 2023

Issue 1: "Scanner Not Found" or "Cannot Communicate with Scanner"

Why it happens: Windows Update may have overwritten the USB driver or the network firewall is blocking port 8612.

Solution:

For USB: Go to Device Manager > Imaging Devices. If you see a yellow exclamation mark, right-click > Update Driver > Browse my computer > Let me pick > Select "Canon MF Scanner" from the list.
For Network: Temporarily disable Windows Defender Firewall. If scanning works, add an inbound rule for CNMNS.exe and SCANCJ.exe.