What is pptd40nt.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the pptd40nt.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Pptd40nt.exe file information

Windows Task Manager with pptd40nt
Pptd40nt.exe process in Windows Task Manager

The process known as PaperPort Print to Desktop for NT belongs to software PaperPort (version 8.0 SE) or ScanSoft PaperPort (version 11, 10) or Nuance PaperPort (version 12) by ScanSoft ( or Nuance Communications ( or Scansoft (

Description: Pptd40nt.exe is not essential for the Windows OS and causes relatively few problems. The pptd40nt.exe file is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 57,393 bytes (50% of all occurrences), 29,984 bytes and 7 more variants. 
It is not a Windows core file. The program is not visible. The software is loaded during the Windows boot process (see Registry key: MACHINE\Run). The process can be removed using the Control Panel's Add\Remove programs applet. Therefore the technical security rating is 29% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case you experience problems using pptd40nt.exe, you can also do the following:
  1) safely remove the program using the uninstall program of PaperPort or ScanSoft PaperPort 11 (Control Panel ⇒ Uninstall a Program)
  2) visit the [1][2] website
  3) search for an update [1][2] on the vendor’s website.

Recommended: Identify pptd40nt.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as pptd40nt.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the pptd40nt.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

This file is for the brother printer loop
  John Bongo  
Part of some scanner drivers. No Harm @ All!  
belongs to paperport application
Part of Dell printer software
Is installed by paperport
  John Hibbs  
Part of the Printer Suite from Brother (Paperport)
treiberbestandteil Brotherdruck/Scanner
  Athaekeetha   (further information)
The Paperport website says that this is required for printing from Paperport and that it is always running. See the link for the Knowledgebase. If you don't have Paperport, then delete/uninstall. See
  Todd   (further information)
Installed when setting up Xerox Workstation, harmless
Supplied with a Brother DCP 150 printer/scanner
  Mad Dave  
Some drivers for brother printers.

Rating chart

Summary: Average user rating of pptd40nt.exe: based on 15 votes with 11 user comments. 13 users think pptd40nt.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving pptd40nt issues

A clean and tidy computer is the key requirement for avoiding problems with pptd40nt. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the pptd40nt.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

pptd40nt.exe [all]