Sometimes a ghost TCP/IP printer port refuses to be deleted via the GUI ("The requested resource is in use"). This registry tweak forces its removal, allowing you to clean up stubborn printer configurations.

The Fix

# 1. Open Registry Editor (regedit.exe) as Administrator.
2. Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Monitors\Standard TCP/IP Port\Ports
3. Locate the subkey for the problematic printer port (e.g., "IP_192.168.1.100").
4. Right-click on the subkey for that port and select "Delete".

Why it works

  • Printer ports, especially TCP/IP ones, are stored directly in the registry. Deleting the entry here bypasses the Print Spooler's checks that might report the resource as "in use," allowing for a forced cleanup.

Verify

  • After deleting the key, reboot your computer.
  • Open Print Management (or Settings > Bluetooth & devices > Printers & scanners > Printer Properties > Ports) and confirm the problematic port is no longer listed.

Notes

  • Requires Administrator privileges.
  • IMPORTANT: Back up your registry before making changes. (File > Export in regedit).
  • Ensure the printer port is truly no longer needed before deleting.
  • This doesn't remove the printer itself, just the port configuration. You might need to remove the printer from "Printers & Scanners" separately.

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