What is HPDayStarterService.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 HPDayStarterService.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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HPDayStarterService.exe file information

Windows Task Manager with HPDayStarterService
HPDayStarterService.exe process in Windows Task Manager

The process known as HP DayStarter service belongs to software HP QuickLook or HP DayStarter by Hewlett-Packard Company (

Description: HPDayStarterService.exe is not essential for the Windows OS and causes relatively few problems. HPDayStarterService.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 90,112 bytes (54% of all occurrences), 133,688 bytes, 81,920 bytes or 86,016 bytes. 
The program is not visible. HPDayStarterService.exe is not a Windows core file. Therefore the technical security rating is 47% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you encounter difficulties with HPDayStarterService.exe, you can turn to the software company, HP, for advice, update the program or uninstall the program using the Control Panel ⇒ Uninstall a ProgramHP QuickLook or HP Web Camera.

Recommended: Identify HPDayStarterService.exe related errors

Important: Some malware camouflages itself as HPDayStarterService.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the HPDayStarterService.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

The application is aimed at people who are in a rush in the morning and want to see their calendar and remaining battery life before their system finished booting. It's Bloatware and basically crap. You should dump it.

Summary: Average user rating of HPDayStarterService.exe: based on 1 vote with 1 user comment. One user thinks it's probably harmless.

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Best practices for resolving HPDayStarterService issues

A clean and tidy computer is the key requirement for avoiding problems with HPDayStarterService. 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 repairing of your installation or, for Windows 8 and later versions, 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 HPDayStarterService.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.

Other processes

HPDayStarterService.exe [all]