This article describes how to troubleshoot some common printing problems in Windows.

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Cannot print to a network printer after adding Internet Connection Sharing

After you add Internet Connection Sharing to the network, you cannot print. This problem occurs because Connection Sharing uses a Class C subnet with an address range of 198.168.0.x. To fix this issue, reset the IP address of the printer to match the subnet of the computers that are using Connection Sharing.

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Cannot send a print job to a Windows 98 client

You cannot send a print job to a Microsoft Windows 98-based client that is using a password for the printer share from Microsoft Windows 2000 or from Microsoft Windows Server 2003. To resolve this issue, use the following command: Replace computer with the computer name of the Windows 98-based computer that is sharing the printer, replace printer with the name of the printer share, and replace password with the password for the share.

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Error messages typically caused by local port monitor problems

When you restart the computer or restart the Print Spooler service, you receive the following error message: When you open the printer's properties, you receive the following error message When you try to print a document, you receive an "Access violation" (Dr. Watson) error message. The Dr. Watson log points to Spoolsv.exe with error code C0000005.

You receive the following error message, and the print spooler stops: Attempting to restart the Print Spooler service or open the Printers folder causes the same message.

These problems may occur if the default local port monitor is changed by a third-party program. Fixing these problems requires editing the registry.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

1.	Start Registry Editor.
2.	Locate the Local Port value under the following key in the registry: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Monitors\Local Port
3.	Double-click the Driver subkey, and then edit the value. Change the string value to Localspl.dll, and then click OK.
4.	Check the following registry key for third-party monitors. Remove any non-default monitors: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Monitors The default port monitors are: AppleTalk Printing Devices (When Services for Macintosh is installed) BJ Language Monitor Local Port PJL Language Monitor Standard TCP/IP Port USB Monitor Windows NT Fax Monitor ** LPR Port NOTE: Do not remove LPR Port Monitor unless advised by a Microsoft Support Professional.
5.	Check the following registry key for third-party print providers. Remove any non-default print providers: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Providers The default print providers are: Internet Print Provider LanMan Print Services
6.	Check the following registry key for third-party print processors. Remove any non-default print processors: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Environments\Windows NT x86\Print Processors The default print processor is: WinPrint To find out what printer is using the print processor, use the Microsoft Product Support Reporting Tool (MPS_REPORTS) tool to open MachineName_PRINTDRIVERS.TXT, and then search for the third-party print processor and for the queues that are using the print processor.
7.	Change the third-party print processor to WinPrint.
8.	Click Start, point to Settings, and then click Control Panel.
9.	Double-click Printers, right-click the printer, and then click Properties.
10.	On the Advanced tab, click Print Processor.
11.	In the Print Processor box, click WinPrint.
12.	Click OK two times.
13.	Quit Registry Editor.

After you edit the registry, restart the print spooler. To do so, start Microsoft Management Console (MMC) and add the Computer Management or the Services snap-in. Right-click Print Spooler Service, and then click Start.

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Cannot add Windows 2000 printer drivers to Windows NT 4.0

To add a network printer managed by Windows NT 4.0 to a Windows 2000-based computer, follow these steps:

1.	On the Windows 2000-based computer, install the printer locally on LPT1.
2.	Click Start, point to Settings, and then click Printers.
3.	Right-click the printer, and then click Properties.
4.	On to the Ports tab, click LPT1.
5.	Click Add Port.
6.	Double-click Local Ports.
7.	Type \\servername\printershare, where servername is the name of the server and printershare is the name of the printer share.
8.	Click OK.

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Error message printing a document

When you print a document, you receive the following error message: If the printer is a network printer, try opening an IPC connection by using \\Servername to make sure there is network connectivity and that the server can respond to share requests.

For a local printer, check the cabling and power to the locally attached printer.

If these methods work, you may have to reinstall the printer drivers. To completely remove the printers you may have to edit the registry.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

1.	Start Registry Editor.
2.	Locate the Printers value under the following key in the registry: KEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Printers
3.	Remove the printers that are installed under this key. For example, remove the following key for a Generic Text/Only printer: KEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Printers\Generic / Text Only
4.	Follow the instructions in the "Error Messages Typically Caused by Local Port Monitor Problems" section of this article.
5.	Quit Registry Editor.

After you do this, reinstall the drivers for your printer.

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Cannot print from a 16-bit MS-DOS-based program

In this situation, type the following line at a command prompt: In your 16-bit program, print to LPT1. You can assign other LPT ports to MS-DOS-based 16-bit programs if the program has to use other ports.

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Additional information

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

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