Article ID: 163241 - View products that this article applies to.
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IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.
When you print to a printer through a line printer remote (LPR), the status of the printer may show "Status Unknown" in Windows NT 3.51.
When the printer is opened from the Printers folder in Windows NT 4.0, the printer may show <Failed to open, Retrying> and the Properties for that printer may be unavailable.
If you attempt to add an LPR port, which does not appear in the list of ports but actually exists in the registry, the follow error may occur:
Additionally, all available LPR ports may not be listed from within Printer Properties Details or Ports tabs.
The port already exists.
There are two known possible causes for these symptoms:
To fix the problem, the invalid port must be removed from the registry. To do this, use the following steps:
For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it.
Windows NT supports TCP/IP printing as documented in RFC 1179. During the creation of an LPR port, an IP address (name or address of host providing lpd:) and LPD queue name (name of printer on that machine:) must be provided for the print destination.
The following are examples of valid and invalid LPR Port entries:
Valid LPR Port:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Print\Monitors \LPR Port\Ports\18.104.22.168:Text1\Timeouts
Invalid LPR Port:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Print\Monitors \LPR Port\Ports\22.214.171.124\<additional_name>\Timeouts
Microsoft has confirmed this to be a problem in Windows NT version 3.51 and 4.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.
Article ID: 163241 - Last Review: February 24, 2014 - Revision: 2.1