What is sentry.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 sentry.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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Sentry.exe file information

The process known as Sentry belongs to software Sputnik or Microsoft Windows SDK for Windows (version 7) by

Description: Sentry.exe is not essential for the Windows OS and causes relatively few problems. Sentry.exe is located in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 1,117,888 bytes (50% of all occurrences), 1,129,152 bytes or 1,068,736 bytes. 
The program is not visible. The file is certified by a trustworthy company. The file is not a Windows core file. Sentry.exe is able to monitor applications and record keyboard and mouse inputs. Therefore the technical security rating is 63% dangerous.

Uninstalling this variant: In the event of any problems with sentry.exe, you can completely remove Microsoft Windows SDK for Windows 7 (Control Panel ⇒ Uninstall a Program).

Recommended: Identify sentry.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as sentry.exe. Therefore, you should check the sentry.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.


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Best practices for resolving sentry issues

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

sentry.exe [all]