LOGO Mobile menu
Download SpyShelter

What’s WindowsInstaller-KB893803-x86.exe (Update Package)? Is it safe or a virus?

WindowsInstaller-KB893803-x86.exe is a software package developed by Microsoft Corporation. It serves as an update package for the Windows Installer system, which is responsible for the installation, maintenance, and removal of software on Windows operating systems. This update package is designed to enhance the performance and reliability of the Windows Installer, addressing issues such as application installation failures, error messages, and software instability.

KB893803 is a Windows update that installs Windows Installer 3.1 on compatible Windows versions. This update improves the functionality of the Windows Installer, which manages software installation, updates, and removal. It also includes important bug fixes and enhancements for system stability and security. It's commonly needed for older systems, like Windows XP or Windows Server 2003, to support newer software that relies on Windows Installer 3.1.

Below are 4 simple steps you can take to see if the WindowsInstaller-KB893803-x86.exe process is safe or malware.

  1. Scan the executable with Microsoft's built-in tech
  2. Find WindowsInstaller-KB893803-x86.exe's publisher
  3. Search the executable's hash with VirusTotal
  4. Monitor the executable's behavior

Researched by Carl @ SpyShelter Labs

Recently Detected Threats

A Trojan is a harmful software that pretends to be a legitimate program or file to deceive users into downloading it. It can steal personal information, damage files, or give hackers control over the infected device.

Download SpyShelter to see detailed safety information about every .exe on your PC.

Check your PC for threats

More about WindowsInstaller-KB893803-x86.exe on WINDOWS

Who makes WindowsInstaller-KB893803-x86.exe (Update Package)?

We’ve found Microsoft Corporation should be the publisher of WindowsInstaller-KB893803-x86.exe.

How do we know? Our SpyShelter cybersecurity labs focuses on monitoring different types of Windows PC executables and their behaviors for our popular SpyShelter Antispyware software. Learn more about us, and how our cybersecurity team studies Windows PC executables/processes.

What does it mean if someone is the publisher of a PC .exe (executable or process)?

The publisher of an executable is the entity responsible for its distribution and authenticity. Most processes/executables on your PC should be signed. The signature on the executable should have been verified through a third party whose job it is to make sure the entity is who it says it is. Find an unsigned executable? You should consider scanning any completely unsigned .exe on your PC.

Last updated: October 22, 2024

Curious about other processes on your PC?
Try SpyShelter or search below.

Or browse the process directory by name:

Why should you trust us?

Our team at SpyShelter has been studying Windows PC executables for over 15 years, to help fight against spyware, malware, and other threats. SpyShelter has been featured in publications like The Register, PC Magazine, and many others. Now we’re working to share free, actionable, and easy to understand information about Windows executables (processes) with the world, to help as many people as possible keep their devices safe. Learn more about us on our "About SpyShelter” page.

Have any questions? Please join our free public SpyShelter PC Security Forum and talk cybersecurity with our USA-based team. We love talking about PC Security and we’d like to get to know you.

Join our PC security forum →