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[Rosalia Kemme]

The primary component of the printing interface is the print spooler. The print spooler is an executable file that manages the printing process. Management of printing involves retrieving the location of the correct printer driver, loading that driver, spooling high-level function calls into a print job, scheduling the print job for printing, and so on. The spooler is loaded at system startup and continues to run until the operating system is shut down.

Applications that print create a printer device context (DC). When an application creates a printer DC, the spooler performs necessary tasks such as determining the location of the required printer driver and then loading that driver. The print spooler also determines the data type used to record the print job.

Custom data types can be added to the spooler by installing additional printer drivers and print processors. A print job is a document stored internally and encoded by using one of the supported data types, and a print job may contain one or more pages of output. The print job may consist of multiple forms; for example, a job may consist of one envelope and three pages of A4 paper. A print job is defined (or bracketed) by the StartDoc and EndDoc functions.

The default data type for a print job is the enhanced metafile. An EMF record is a compact structure used to store text output commands, raster graphics commands, and so on. When an application calls StartDoc, the spooler creates a spool file and a data file and begins storing EMF records in the spool file. Each time the application calls one of the GDI drawing functions, one or more new EMF records are created and stored in the spool file. The spool and data files are created in an operating system directory. The spooler uses the spool file to store EMF records and uses the data file to record the type of form, the data type for the print job, the target printer, and so on. The spooler deletes these files when the job has successfully printed.

The printspooler service is a service that is running on each computer thatparticipates in the Print Services system. The print spooler service implementsthe print client and print server roles, byenabling each participating system to act as a print client, administrativeclient, or print server for the Print Services system.

Implementation of the print client role can includeimplementation of the print server role in the print spooler service due to thedual client/server implementation of the Print System Remote Protocol [MS-RPRN]on most Windows Client operating system versions. If animplementation acts as print client only, it supports all Print System RemoteProtocol methods and can optionally support the Print System AsynchronousRemote Protocol [MS-PAR].

For the print server role, the print spooler serviceregisters the RPC endpointsfor the print protocols [MS-PAR] [MS-RPRN] [MS-PAN].The print spooler service also exposes local interfaces that extend Internet Information Services(IIS) to support the InternetPrinting Protocol (IPP) [RFC8010] [RFC8011] and theWeb Point-and-Print Protocol [MS-WPRN]if they are configured to support IPP.

For the print client role, the print spooler service can usepolling to collect changes that are related to printers or to print jobs on the server,or the print spooler service can call the Print System Remote Protocolnotification callback functions that are exposed in that protocol's RPCendpoint. Firewall settings or Windows Group Policy settings canprevent the client from receiving printing notifications. The Windows behavioris to use polling in such scenarios. Additionally, the print spooler serviceexposes local interfaces that are used by client applications to print, obtain print queue status,administer print queues, or perform other print-specific actions.

The print spooler is a dedicated program/software that essentially manages the order of the documents to proceed to the print queue. When you select print, your program talks to the print spooler service to work out how to render (or draw) your print job so the printer will understand it and put the colors in the right spots on the page. There are all different types of spoolers in computing (once upon a time there were literal tape spools running inside computers), so the print spooler, you guessed it, takes care of just your print documents.

One of the most used outside of Windows is the Common UNIX Printing System (CUPS) which lets a computer act as a print server and does the print spooling and scheduling. CUPS uses the Internet Printing Protocol (IPP) to manage print jobs and queues.

We have seen this problem on two Windows 11 systems with the latest Thunderbird version. The last system had version 115.5.1. The first system was a couple of months ago and I do not remember what version we used there.

What happens is that the print spooler is stopped (often, but not always) when Thunderbird is started. A manual start of the spooler after starting Thunderbird then enables printing again on the system.

On the first one we did not know what was causing the print spooler to stop. We wiped the system, re-installed Windows and everything else. The problem was gone after that. In hindsight we do not know why this fixed it. Apparently this is not just a problem in Thunderbird alone?

On the second one we added an extra Windows user with administrative rights and changed the original user to a standard user. Then Thunderbird (or another culprit?) no longer has sufficient privileges to kill the spool server on startup of Thunderbird and that seems to work.

A problem with the print spooler can cause some printing and communication issues. Sometimes, restarting or clearing the print spooler may resolve these issues. The print spooler helps your Windows computer interact with the printer, and orders the print jobs in your queue.

It is also possible to delete printers from the computer's registry. If the printer cannot be deleted or removed, and restarting the print spooler has not cleared the issue, remove the printer manually from the registry.

I've been looking at eliminating NTLM use in my domain, and noticed that Windows clients' print spooler service is falling back to using NTLM to reach the print server. Digging deeper, it's making a request that I can't decipher at all...

Out of the blue I lost my printer connection. When I look at my printer menu there is no printer listed. When I try to add or install a printer, I get some odd message about a printer spooler is not running. Restart the machine. I've tried unhooking the printer, rebooting, unhooking from the power source. I even went into some area as an administrator and found the print spool task and when I clicked on the start button there was no action.

I actually just ran into this problem myself and while looking for an answer, I ran into this post. I have a Pixma Canon MP250 and I also have Windows 8.1. Is there a way to fix the spooler problem so that I can use my printer once more? It's so weird because I was using it just yesterday and today out of the blue it stopped working and I have no idea whatsover what 'caused it. Any help would be greatly appreciated! Thanks in advance.

Printer Spooler Error Message: I found that by going into the Windows Control Panel, then selecting: "Program and Features" you will see the heading on this page: : "Inistall or Change a Program" ... to the left of these words on this same page,, you will see a small Windows Shield and the wording: "Turn Windows Features On and Off." I then selected that option and then, within that option, went down the alphabetic list to: "Printer and Document Services" -- In my situation, the Printer and Document Services box along with the related services boxes below were not checked.. just a dot mark.. My printer and computer had been working just fine.. how this got changed is not understood.....

I made certain all boxes under Printer and Document Services were checked and then my printer started to work and the "Printer and Spooler Error Message" went away.... In my stiutaiton this appeared to be a Windows problem not related to my Cannon MP280 printer which works just great for me...!

I found a solution to the print spooler. I have an android phone and that may be all this works for. Under my print options when I have my page ready to go, there's printer defaults I had 2 printer defaults running ( canon and the phones default print software). Turn off the phones default. If you ever get another print- we'll turn it back on or your new printers app as default. I'm not a super geek by any means so maybe this can help/maybe not. GL

Since this is an 11-year old topic, it's likely the issue you experienced, and solution offered differs greatly from the individual who started this thread. If you would like assistance, please start a new thread. It should include the model number of your Canon device, the version and build of the operating system you are using, what your device is connected to and how. Please include any additional information or errors you have encountered or believe will help us better understand your issue. There is just too much which has changed since this thread was started.

I have been having a nightmare with a print driver for the HP LaserJet Enterprise M605 PCL6 driver. This started occuring last Tuesday (August 9th). I had physically installed a new M605 printer and went to install the driver on the print server. Using the disc that came with the printer I went on to Print Management and proceeded to install the driver and map the driver to an IP address. I installed both x64 and x86 versions as we have a mix of 64-bit and 32-bit machiens on our network. After that I had an employee try adding a printer and they kept on getting a "Printer could not be added" message. I decided to check the server and when I attempted to open the properties for that printer I received nothing but exception errors and faults. Then I notices the print spooler service stopped. I attempted to restart the service but it just went back into a "stopped" state.

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