ID #1192

Problem While installing Printer driver when USB printer is plugged in.

PROBLEM : While installing Printer driver following error was appearing when USB printer is plugged in.

 “the specified port is unknown”

 

Resolution:

 

  1. 1.      Open Registry Editor.
  2. 2.      Go to following path

HKEY_LOCAL_MACHINE/System/CurrentControlSet/Control/Print/Monitors

Check if a subkey with the name USB Monitor exists. If not, create it, by right-clicking Monitors and selecting New > Key. Name that key USB Monitor.

Now right-click in the right pane and select New > String Value from the menu. Enter Driver as the name. Double-click driver and enter usbmon.dll as the value.

Now restart your computer and perform the printer installation again. It should resolve the problem.


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