How to remove the winlogon virus

Most antivirus programs identify winlogon.bat as malware.

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 winlogon.bat malware

Winlogon.bat file information

The winlogon.bat process contains no information about its author.

Description: Winlogon.bat is not essential for Windows and will often cause problems. Winlogon.bat is located in the Windows folder for temporary files. Known file sizes on Windows 10/8/7/XP are 83 bytes (50% of all occurrences), 80 bytes or 84 bytes. 
The program has a visible window. There is no information about the author of the file. The program starts when Windows starts (see Registry key: Run, User Shell Folders). It is not a Windows core file. winlogon.bat appears to be a compressed file. Therefore the technical security rating is 71% dangerous.

Recommended: Identify winlogon.bat related errors

If winlogon.bat is located in a subfolder of the user's profile folder, the security rating is 67% dangerous. The file size is 84 bytes (50% of all occurrences) or 82 bytes. The program has a visible window. There is no information about the author of the file. The application starts upon Windows startup (see Registry key: Run, User Shell Folders). Winlogon.bat is not a Windows system file. winlogon.bat appears to be a compressed file.

Important: You should check the winlogon.bat 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.


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Best practices for resolving winlogon issues

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

winlogon.bat [all]