Windows 11 Printer Bug Causes Ghost Prints of Random Data — What Happened?

In early 2025, a strange and frustrating bug started affecting many Windows 11 users: USB-connected dual-mode printers suddenly began printing pages filled with random strings of text and protocol commands. These unexpected printouts often started with lines such as INLINECODE0 , revealing internal IPP (Internet Printing Protocol) messages that were never meant to be printed. The problem emerged after certain Windows 11 updates rolled out around January 2025 and quickly became a widespread nuisance for both home users and enterprises.

Technical Background

The root cause stemmed from how Windows 11's print spooler component handled communication between the operating system and printers supporting dual USB modes — traditional USB Print and IPP over USB. The bug caused data streams intended as control or status messages between Windows and the printer to be misinterpreted as printable content, resulting in a stream of nonsensical output rather than normal print jobs.

This glitch particularly surfaced when printers powered on or reconnected, triggering print spooler commands that the device erroneously outputted as printed pages. Notably, this behavior was seen in Windows 11 versions 22H2 and 23H2, including updates such as KB5050092 and others, while the later 24H2 version seemingly avoided the issue.

Impact and Implications

  • Resource Waste: The bug caused excessive waste of paper and ink from unsolicited printouts.
  • Workflow Disruption: Unexpected printing could interrupt office environments, causing confusion and additional troubleshooting overhead.
  • Security Concerns: Printing out protocol messages exposed internal communication details that could have privacy or security implications.
  • IT Management Challenges: System administrators faced the challenge of identifying and mitigating the bug in enterprise settings without causing excessive downtime.

Microsoft’s Response and Fixes

Microsoft officially acknowledged the bug and issued an optional update, KB5053657, in March 2025, precisely targeting the USB dual-mode printer glitch. This update:

  • Repairs the protocol handling that caused printers to print random data.
  • Applies to Windows 11 versions 22H2 and 23H2 immediately.
  • For Windows 11 24H2, a planned fix is scheduled for release on March 27, 2025.

In addition to the patch, Microsoft activated a Known Issue Rollback (KIR) feature to automatically revert problematic updates on non-managed devices, helping individual users avoid manual intervention.

How to Fix the Printer Bug

  1. Install KB5053657 Preview Update: Windows 11 users on 22H2 and 23H2 should check Windows Update for KB5053657 and install it manually if available.
  2. Known Issue Rollback (KIR): For users impacted by the bug, Microsoft’s automatic rollback for non-managed devices can resolve the issue over several days.
  3. Update to Latest Windows Builds: For Windows 11 24H2 users, await or install the March patch that addresses the printer bug.
  4. Restart Your Computer: Always restart your PC after applying the update to ensure fixes are applied.
  5. Printer Firmware & Driver Updates: Although the bug is on the OS side, verifying your printer’s firmware and drivers are up-to-date can also help avoid driver-specific print issues.

Broader Lessons

This bug sheds light on the complexities of modern operating system maintenance. Software patches designed to improve security or functionality can inadvertently disrupt existing workflows, especially when they interact with diverse hardware.

The incident underlines the importance of phased update rollouts, robust testing, and swift response mechanisms such as Microsoft's Known Issue Rollback. IT administrators are reminded to balance rapid patch adoption with the need to verify updates in test environments.

Summary

The Windows 11 printer bug that caused ghost printing of random protocol data was a disruptive but now-resolved issue. Microsoft's KB5053657 update and rollback mechanisms have quelled the problem, restoring normal printer functionality for affected users. This episode is a testament to the challenges of managing an extensive software ecosystem while maintaining user trust and system reliability.

References:

For more details, also see Microsoft official updates on KB5053657.