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What’s LsaIso.exe (Credential Guard & VBS Key Isolation)? Is it safe or a virus?

Did you find LsaIso.exe (Credential Guard & VBS Key Isolation) running in your Windows Task Manager? If so, you're probably wondering what it is and if it's safe. Well, it's a bit complicated to explain what this executable does... It all starts with helping to secure your Windows PC logon and password.

Microsoft started isolating sensitive parts of the Windows OS with virtualization technology similar to the LsaIso.exe process, as far back as Windows 8.1. Microsoft describes Credential Guard aka LsaIso.exe, as "Virtualization-based security (VBS) to isolate secrets so that only privileged system software can access them. Unauthorized access to these secrets can lead to credential theft attacks like pass the hash and pass the ticket."

You may already know that credentials in Windows PCs refer to the usernames and passwords used to access the computer and network resources, including local user accounts, domain user accounts, and online accounts linked to Microsoft services like Office, Outlook, etc...

Therefore, LsaIso.exe is running on your PC, helping protect your Windows credentials from spyware, malware, and other threats.

Here in Austin, Texas at our SpyShelter Cybersecurity Lab, on the day we investigated this process, we found LsaIso.exe running on every PC we have here. You can be sure it's safe a safe process, as long as it's signed by Microsoft.

You can check who signed a process by using Windows Properties, or use our free SpyShelter Antispyware app.

Researched by Jon @ SpyShelter Labs

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More about LsaIso.exe on WINDOWS

Who makes LsaIso.exe (Credential Guard & VBS Key Isolation)?

We’ve found Microsoft Windows should be the publisher of LsaIso.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: February 2, 2024

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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.

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