What is ybrowser.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 ybrowser.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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Ybrowser.exe file information

Windows Task Manager with ybrowser
Ybrowser.exe process in Windows Task Manager

The process known as Yahoo! Browser or Avant Browser belongs to software Yahoo! Browser or Avant Browser by Yahoo! ( or Avant Force (

Description: Ybrowser.exe is not essential for Windows and will often cause problems. Ybrowser.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 668,152 bytes (40% of all occurrences), 1,382,200 bytes and 4 more variants. 
It is a Verisign signed file. It is digitally signed. The file is not a Windows system file. The program uses ports to connect to or from a LAN or the Internet. The program has no visible window. Ybrowser.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 23% dangerous, however you should also read the user reviews.

Uninstalling this variant: You could also visit the support page or remove the entire program Avant Browser using Windows Control Panel.

Recommended: Identify ybrowser.exe related errors

Important: Some malware camouflages itself as ybrowser.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the ybrowser.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 Tray Icon
application error
The instruction at "0x07f58a63"referenced memory at "0x07f58a63". The memory could not be read.
  Geoff Elliott  
ybrowser.exe has caused an error and will close
y browser corrupt file
ybrowser is a part of avantbrowser since last update, before it was avanttab.exe. Why avant renamed it, I really don't know....  
It is a weather screen saver. Now, it takes all my memory.
  Tom Sutor   (further information)
It`s Avant Browser. It`s required for the browser to run

Rating chart

Summary: Average user rating of ybrowser.exe: based on 8 votes with 9 user comments. 3 users think ybrowser.exe is essential for Windows or an installed application. 3 users think it's neither essential nor dangerous. 2 users suspect danger. 2 users don't grade ybrowser.exe ("not sure about it").

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Best practices for resolving ybrowser issues

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

ybrowser.exe [all]