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The is a software component that manages the communication port (usually USB or network) between your computer and a Canon MF printer/scanner. The "Exclusive" part refers to a dedicated driver or service required for proper bi-directional communication (e.g., status monitoring, toner levels, scan functions).

If you need help resolving this issue, please share a few details so we can find a fix: What is your specific ? Which version of Windows are you currently running?

: Major Windows 11 updates (such as version 24H2) alter kernel-mode driver policies. This causes Windows to block the background port monitor from injecting itself during standard executable setups.

The Canon MF Port Monitor is a critical software component (specifically, a language monitor) that facilitates communication between Windows and Canon MF devices. It manages data flow, bidirectional communication, and port status (e.g., USB or network). Without a properly installed port monitor, Windows cannot send print jobs to the device or receive scanner feedback.