How to remove the istsvc virus

Most antivirus programs identify istsvc.exe as malware—for example Symantec identifies it as Adware.Istbar, and TrendMicro identifies it as TROJ_DLOADE.BQG.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the istsvc.exe malware

Istsvc.exe file information

The process known as istsvc.exe belongs to software ISTsvc by unknown.

Description: Istsvc.exe is not essential for Windows and will often cause problems. Istsvc.exe is located in a subfolder of "C:\Program Files"—usually C:\Program Files\istsvc\. The file size on Windows 10/8/7/XP is 21,504 bytes. 
Istsvc.exe is a file with no information about its developer. The software starts upon Windows startup (see Registry key: MACHINE\Run). Istsvc.exe is not a Windows system file. The program has no visible window. Istsvc.exe is able to hide itself. Therefore the technical security rating is 64% dangerous, however you should also read the user reviews.

Uninstalling this variant: There is a possibility to safely remove the program using the uninstall program of ISTsvc (Control Panel ⇒ Uninstall a Program).

Recommended: Identify istsvc.exe related errors

External information from Paul Collins:

Important: You should check the istsvc.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

this spyware should come from corrupted files, surveys, hacks (for free programs), torrents, or fake programs,... scan your computer before you launch an app that you don't trust
dangerous spyware/adware/trojan.
Well I never really experienced that threat before but maybe this is a good method ~ go to task manager look for istsvc.exe then end process then go to start run type in msconfig then go to startup then uncheck the Spyware/Trojan/Virus then Apply settings then restart computer then go to Start type in regedit (I don't where the infected files are) look for the infected items then delete them... Then look for the infected files in C:\Program Files and look for the exe file that caused the infection... Use different methods of fighting this threat~~ Maybe try out Firefox and the add-ons
  Oh Tricky Threat   (further information)
it takes over your pc. go to your windows procces and keep deleating it, take a while for it to stop. then go to and get drweb, superantispyware, IObit and that will help get rid of some of the crap it downloaded. nothing can kill it.
After countless hours fighting this scumbag trojan this WORKED for me.
  Sammy   (further information)
This is so simple to remove. All you must do, for Windows XP users, download security task manager and end it's process. For more spyware removal tools
  Mike   (further information)
really really good
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of istsvc.exe: based on 308 votes with 9 reviews. 13 users think istsvc.exe is essential for Windows or an installed application. 8 users think it's probably harmless. 24 users think it's neither essential nor dangerous. 78 users suspect danger. 185 users think istsvc.exe is dangerous and recommend removing it. 41 users don't grade istsvc.exe ("not sure about it").

Do you have additional information?
What do you know about istsvc.exe:
How would you rate it:
Link for more info:
Your Name:

Best practices for resolving istsvc issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active istsvc process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the istsvc.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. 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.

Other processes

istsvc.exe [all]