What is ISRService.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 ISRService.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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ISRService.exe file information

The process known as FirstDefense-ISR Service (Professional) or FirstDefense-ISR Service or InstantRescue Service or InstantRecovery Service (Server)

belongs to software FirstDefense-ISR or ISRService

by Raxco Software ( or Leapfrog Software or Horizon DataSys (

Description: ISRService.exe is not essential for the Windows OS and causes relatively few problems. The ISRService.exe file is located in a not identifiable folder. The file size on Windows 10/8/7/XP is 0 bytes. 
The program has no visible window. File is hidden. ISRService.exe is not a Windows core file. There is no description of the program. Therefore the technical security rating is 92% dangerous; however you should also read the user reviews.

Uninstalling this variant: If problems with ISRService.exe come up, you can also uninstall the program using the Control Panel ⇒ Uninstall a ProgramFirstDefense-ISR or FirstDefense Rescue.

Recommended: Identify ISRService.exe related errors

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

System recovery program
  dvdst711   (further information)
The best and fastest System recovery program for everyday use. (Raxco).

Summary: Average user rating of ISRService.exe: based on 2 votes with 2 user comments. 2 users think ISRService.exe is essential for Windows or an installed application.

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Best practices for resolving ISRService issues

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

ISRService.exe [all]