What is Runner.exe?

The genuine Runner.exe file is a software component of Idle Crawler.
Idle Crawler is a known (PUP) potentially unwanted program that is often bundled and installed with other programs downloaded from untrustworthy sources. Runner.exe runs the Idle Crawler application. Idle Crawler often utilizes critical system resources and slows down computers. The program creates two processes, Chrome.exe or Navigate.exe, that send out web requests to unknown servers. The program also creates two tasks in the Window Task Scheduler, Special IC Runner and Advanced IC Updating, that will launch Idle Crawler on system startup. Special IC Runner checks whether Idle Crawler is running, whereas Advanced IC Updating proceeds to download new instructions for Idle Crawler. The presence of this program on the system makes it very likely that other PUPs may also be installed.

Runner stands for Runner launcher

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 Runner.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.

Click to Run a Free Scan for Runner.exe related errors

Runner.exe file information

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

The process known as WebStroller runner module or MasterAgent

belongs to software Idle Crawler or OverLook or Web Stroller or MasterAgent or The Kinemorphic (version 3D Screen Saver)


Description: Runner.exe is not essential for Windows and will often cause problems. Runner.exe is located in a subfolder of the user's profile folder—generally C:\Users\USERNAME\AppData\Local\GC\. Known file sizes on Windows 10/8/7/XP are 392,768 bytes (20% of all occurrences), 39,512 bytes and 11 more variants. 
The file is not a Windows system file. The program has no file description. The program has no visible window. The Runner.exe file is digitally signed. Runner.exe is able to monitor applications. Therefore the technical security rating is 55% dangerous; but you should also compare this rating with the user reviews.

Uninstalling this variant: If problems with Idle Crawler or Idle Crawler come up, you can remove the entire program using Windows Control Panel or turn to the software developer [1][2], Idlecrawler, for advice.

Recommended: Identify Runner.exe related errors

Important: Some malware camouflages itself as Runner.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Adware.IdleCrawler.E (detected by F-Secure), and TROJ_GEN.R0CBC0OAB14 or TROJ_SPNR.03B714 (detected by TrendMicro). Therefore, you should check the Runner.exe process on your PC to see if it is a threat. If WebStroller runner module has changed your browser's search engine and start page, you can recover your browser's default settings as follows:

Reset default browser settings for Internet-Explorer ▾
  1. In Internet Explorer, press the key combination Alt + X to open the Tools menu.
  2. Click Internet options.
  3. Click the Advanced tab.
  4. Click the Reset... button.
  5. Enable the Delete personal settings option.
This will reset your Internet Explorer to its default settings. Your browser will start with the familiar start page and search engine—without popups, ads, cookies, but all browser add-ons are deleted too [1]. Make cleaning up your browser and your computer simpler and safer with Security Task Manager.


User Comments

Runner.exe gehört zu FitSharp, einer .NET Implementierung des Testframeworks FIT:
  Christian Baumann   (further information)
It's a genuine process which runs when you execute the tool called Websecurify Scanner
  Vinoth Kumar   (further information)
Great for school computers which blocks .exe files. A way to get around security features and play games at school by converting .exe files into .jar
  Gordon Wu  
I got it from Gamemaker from yoyogames.

Summary: Average user rating of Runner.exe: based on 4 votes with 4 user comments. One user thinks Runner.exe is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous. One user suspects danger. One user is not sure about it.

Do you have additional information? Help other users!

Best practices for resolving Runner issues

A clean and tidy computer is the key requirement for avoiding problems with Runner. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the Runner.exe process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

Runner.exe [all]