How to remove the BI_RunOnce virus

Most antivirus programs identify BI_RunOnce.exe as malware—for example TrendMicro identifies it as ADW_TOMOS or TROJ_GEN.R08JC0EH615, and Microsoft identifies it as Program:Win32/Hadsruda!bit.

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 BI_RunOnce.exe malware

BI_RunOnce.exe file information

The process known as Better Installer Host belongs to software Better Installer by Somoto.

Description: BI_RunOnce.exe is not essential for Windows and will often cause problems. BI_RunOnce.exe is located in a subfolder of Windows folder for temporary files. Known file sizes on Windows 10/8/7/XP are 206,624 bytes (50% of all occurrences), 198,144 bytes or 224,256 bytes. 
The program has a visible window. The program is loaded during the Windows boot process (see Registry key: MACHINE\RunOnce). BI_RunOnce.exe is not a Windows core file. It is a file with no information about its developer. BI_RunOnce.exe is able to monitor applications. Therefore the technical security rating is 27% dangerous.

Recommended: Identify BI_RunOnce.exe related errors

If BI_RunOnce.exe is located in the Windows folder for temporary files, the security rating is 16% dangerous. The file size is 230,480 bytes. The program has a visible window. The file has a digital signature. The software starts when Windows starts (see Registry key: MACHINE\RunOnce). The BI_RunOnce.exe file is not a Windows system file. BI_RunOnce.exe is able to monitor applications.

Uninstalling this variant: If you encounter difficulties with BI_RunOnce.exe, you can do the following:

Important: You should check the BI_RunOnce.exe process on your PC to see if it is a threat. If Better Installer Host 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.


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Best practices for resolving BI_RunOnce issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active BI_RunOnce process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the BI_RunOnce.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

BI_RunOnce.exe [all]