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.
The process known as Thunking Spooler APIS from (version 32 to 64 Process) or Print driver host for (version 32bit applications) or Print driver host for applications belongs to software Microsoft Windows Operating System by Microsoft (www.microsoft.com).
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 8/7/XP are 39,936 bytes (37% of all occurrences), 67,072 bytes and 4 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 1% 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 (detected by Symantec), and TROJ_SPNV.01LT14 (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.
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 cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.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: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.