The genuine rubyw.exe file is a software component of CYGWIN32 Modified Ruby interpreter by RedHat.
"Rubyw.exe" should only be present on enterprise-owned PC's because it is a modified form of the "Ruby" open-source scripting language interpreter, made available as an executable binary only in Red Hat Software's 32-bit version of Cygwin, which does not use standard in/out/error files and thus does not "pop up" a command prompt (DOS shell) every time it executes. Red Hat specializes in open-source software for enterprise customers and Cygwin not only provides a Posix/Linux/UNIX shell to "port" such apps to a Windows machine, which is the environment needed to run Ruby, but also lets system administrators login remotely, fix problems within the shell, and run shell command scripts. Ruby itself was created for Posix/Linux/UNIX in 1995 by Yukihiro Matsumoto, blending aspects of Perl, Lisp, and other languages, and is extremely free and open-source software with multiple implementations. Uninstalling "rubyw.exe" should be done only by an administrator familiar with Red Hat Cygwin32 as it will affect administrator access to the PC.
RubyW stands for Ruby interpreter (Windows-friendly)
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 rubyw.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.
The process known as Ruby interpreter (GUI) (version 1.9.3p448 [i386-mingw32], 1.9.3p125 [i386-mingw32], 1.9.3p484 [i386-mingw32], 1.9.3dev [i386-mingw32], 1.8.6 [i386-mswin32]) belongs to software Ruby interpreter (version 1.9.3p448 [i386-mingw32], 1.9.3p125 [i386-mingw32], 1.9.3p484 [i386-mingw32], 1.9.3dev [i386-mingw32]) by http://www.ruby-lang.org.
Description: Rubyw.exe is not essential for the Windows OS and causes relatively few problems. Rubyw.exe is located in a subfolder of Windows folder for temporary files or sometimes in a subfolder of C:\Windows.
The file size on Windows 10/8/7/XP is 70,239 bytes.
The program is not visible. The file is not a Windows system file. Therefore the technical security rating is 63% dangerous, however you should also read the user reviews.
Recommended: Identify rubyw.exe related errors
Important: Some malware camouflages itself as rubyw.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the rubyw.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.
A clean and tidy computer is the key requirement for avoiding problems with rubyw. 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 rubyw.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.