What is splwow64.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 splwow64.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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Splwow64.exe file information

Windows Task Manager with splwow64
Splwow64.exe process in Windows Task Manager

The process known as Print driver host for (version 32bit applications) or Print driver host for applications or Thunking Spooler APIS from (version 32 to 64 Process) belongs to software Microsoft Windows Operating System or Accident by Microsoft ( or Tv purple -

Description: The original splwow64.exe is an important part of Windows and rarely causes problems. The splwow64.exe file is located in the C:\Windows folder or sometimes in a subfolder of C:\Windows. Known file sizes on Windows 10/8/7/XP are 67,072 bytes (40% of all occurrences), 39,936 bytes and 6 more variants. 
The splwow64.exe file is a Windows core system file. The program is not visible. The file is a trustworthy file from Microsoft. Therefore the technical security rating is 3% dangerous, however you should also read the user reviews.

Recommended: Identify splwow64.exe related errors

Important: Some malware camouflages itself as splwow64.exe, for example Trojan.Gen or Yontoo.C (detected by Symantec), and TROJ_SPNV.01LT14 or TROJ_GEN.R028C0DLB14 (detected by TrendMicro). Therefore, you should check the splwow64.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

Das euer Kommentar nicht hilfreich ist, ihr schreibt einerseits "ie Datei splwow64.exe befindet sich im Ordner C:\Windows" und andererseits (Hinweis:Viren und andere schädliche Dateien können sich als splwow64.exe tarnen. Insbesondere, wenn sich die Datei in C:\Windows oder C:\Windows\System32 Ordner befindet)
Splwow64.exe with description Thunking Spooler APIS from 32 to 64 Process is a process file from Microsoft belonging to Windows Operating System.
Printer driver host for 32 bit applications. Allows 32-bit applications to connect with the 64-bit spooler service on x64 Windows builds.
Causes Sybase PowerDesigner V16 to hang with "Not Responding" because pdshell16.exe is waiting for reply from splwow64.exe even though printing is not involved.
  Ted Saari  
Something about printer on Windows
  Mad   (further information)

Rating chart

Summary: Average user rating of splwow64.exe: based on 10 votes with 5 user comments. 7 users think splwow64.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user suspects danger. One user thinks splwow64.exe is dangerous and recommends removing it. One user is not sure about it.

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Best practices for resolving splwow64 issues

A clean and tidy computer is the key requirement for avoiding problems with splwow64. 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 splwow64.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

splwow64.exe [all]