Disable Print Spooler Service? Risks & Steps

Yes, you can disable the Windows Print Spooler service, and in many cases you should—especially after the PrintNightmare vulnerabilities of 2021. Disabling it stops all local and network printing, so only do it if you don’t need to print from that PC. This article explains what the service does, why you might disable it, exactly how to do it safely, and how to re-enable it later.

What Is the Print Spooler Service?

The Print Spooler (Spooler) is a built-in Windows service that manages all print jobs. When you hit print, your document isn’t sent directly to the printer. Instead, it’s written to a temporary file on your hard drive (the spool), and the spooler then feeds that file to the printer in the background. This lets you keep working while long documents print, and it lets multiple print jobs queue up without colliding.

The service also handles printer drivers, which are the software pieces that translate your document into a language your specific printer understands. Without the spooler, most printers—even those connected directly by USB—won’t work at all. So disabling it is not like turning off a convenience; it’s like unplugging the entire printing subsystem.

Why Disable It? The Security History

The main reason to disable the Print Spooler is security. In 2021, a set of vulnerabilities collectively called PrintNightmare (CVE-2021-34527 and related flaws) showed that the spooler could be exploited remotely to run malicious code on a Windows machine. Microsoft released emergency patches, but the spooler has had other privilege-escalation bugs since then. Because the spooler runs with system-level privileges, any flaw in it is dangerous.

For home users and many small businesses, the risk outweighs the benefit if you rarely print. For organizations with dedicated print servers, Microsoft itself recommended disabling the spooler on domain controllers and any machine that doesn’t need to print. That guidance still stands: if a Windows machine doesn’t need to print, turning off the spooler removes a significant attack surface.

How to Disable the Print Spooler (Two Methods)

There are two reliable ways to disable the service: through the Services app (graphical) or PowerShell (command line). Both require administrator rights.

Method 1: Services App

1. Press Win + R, type services.msc, and press Enter.
2. Scroll down to Print Spooler. Right-click it and select Properties.
3. In the General tab, find Startup type. Change it from Automatic to Disabled.
4. If the service is currently running, click Stop under Service status.
5. Click OK and restart the PC if you want to be sure it doesn’t start again.

Method 2: PowerShell (as Administrator)

1. Right-click the Start button and select Windows PowerShell (Admin) or Terminal (Admin).
2. Run these two commands:

Stop-Service -Name Spooler
Set-Service -Name Spooler -StartupType Disabled

The first stops the service now; the second prevents it from starting at boot. If you only want to stop it temporarily, skip the second command.

What Happens After You Disable It?

Once disabled, you’ll see the following effects:

• No printing from any app, including PDFs, Word, Excel, and web pages.
• No printer drivers will load, so even a USB printer won’t respond.
• No fax or scan-to-PC functions that rely on the spooler (some all-in-one devices use it for scanning).
• Event log errors may appear when an app tries to print, but these are harmless.

If you later need to print, you can re-enable the service by reversing the steps: set the startup type back to Automatic and start the service. No data is lost by disabling it; print queues are cleared when the service stops.

Common Misconceptions and Pitfalls

One common mistake is disabling the spooler but leaving it set to Manual startup. That still allows the service to start on demand, which defeats the security purpose. To fully disable it, you must choose Disabled.

Another misconception is that disabling the spooler will free up significant RAM or CPU. The spooler is mostly idle when not printing, so the performance gain is negligible. The real benefit is security, not speed.

Also, note that Windows Update may occasionally reset the startup type to Automatic after a feature update. If you’ve disabled it for security, check the service status after major updates.

When Should You Keep It Enabled?

You should keep the spooler enabled if:

• You print regularly from this PC, even to a network printer.
• You use a printer that requires the spooler for scanning or faxing.
• You run a print server or share a printer with other users on your network.
• You use certain third-party PDF tools that rely on the spooler for “print to PDF.�

If you must keep it enabled, make sure Windows is fully updated and consider restricting access to the service via Group Policy if you’re on Windows Pro or Enterprise. For home users, keeping the system updated is usually sufficient.

Frequently Asked Questions

Will disabling the Print Spooler break my PDF printer?

Yes, most “print to PDF� features (including Microsoft Print to PDF) rely on the spooler. If you disable it, you won’t be able to create PDFs that way. You can use a standalone PDF converter or save from within apps that have a built-in export function.

Can I still print from my phone or tablet if I disable the spooler on my PC?

Yes, if your printer supports direct mobile printing (e.g., AirPrint, Mopria, or manufacturer apps), it doesn’t need your PC’s spooler. However, if you were using the PC as a print server, that stops working.

How do I re-enable the Print Spooler?

Open services.msc, right-click Print Spooler, select Properties, set Startup type to Automatic, click OK, then right-click the service and choose Start. Alternatively, run Set-Service -Name Spooler -StartupType Automatic and then Start-Service -Name Spooler in an elevated PowerShell.

Does disabling the spooler affect my ability to install printers?

Yes, you won’t be able to add a new printer while the spooler is disabled. The Add Printer wizard will fail. You’ll need to re-enable the spooler temporarily if you want to install a new printer.

Is it safe to disable the spooler on a domain controller?

Microsoft explicitly recommends disabling the Print Spooler on domain controllers, as they don’t need to print and are high-value targets. However, if the DC also serves as a print server, you’ll need to migrate print services to another machine first.

Will Windows Update re-enable the spooler automatically?

Occasionally, a feature update may reset service startup types to their defaults. After a major Windows update, check the spooler’s startup type to ensure it’s still disabled. Regular monthly updates typically don’t change it.

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