What is hotfix.exe?

The genuine hotfix.exe file is a software component of Hotfix Installer by Microsoft.
The installation and removal utility for Microsoft Hotfixes, this application controls the programming and software patches distributed by Microsoft. When a hotfix is released, this application enables it to make whatever modifications are necessary to the corresponding Windows application. Founded in 1975, Microsoft's flagship product is the Windows operating system, which is installed on over 90% of workstations worldwide.

Hotfix stands for Hotfix Installer

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 hotfix.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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Hotfix.exe file information

Windows Task Manager with hotfix
Hotfix.exe process in Windows Task Manager

The process known as Hotfix Installer belongs to software Microsoft SQL Setup by Microsoft ( or Mc AUS.

Description: Hotfix.exe is not essential for the Windows OS and causes relatively few problems. The hotfix.exe file is located in a subfolder of C:\. The file size on Windows 10/8/7/XP is 2,539,872 bytes. 
The program has no visible window. Hotfix.exe is certified by a trustworthy company. Hotfix.exe is not a Windows core file. Hotfix.exe is able to monitor applications. Therefore the technical security rating is 36% dangerous.

Recommended: Identify hotfix.exe related errors

If hotfix.exe is located in a subfolder of the user's profile folder, the security rating is 60% dangerous. The file size is 895,488 bytes (50% of all occurrences) or 564,736 bytes. There is no file information. The program has no visible window. It is not a Windows system file. Hotfix.exe is able to record keyboard and mouse inputs and monitor applications.

Important: Some malware camouflages itself as hotfix.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Trojan-Spy.Win32.Zbot.avoy or Trojan.Win32.FakeAV.smw (detected by Kaspersky), and TROJ_GEN.R3EC3LC or TROJ_GEN.R47C2KK (detected by TrendMicro). Therefore, you should check the hotfix.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.


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Best practices for resolving hotfix issues

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

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

Other processes

hotfix.exe [all]