In computing, encountering unknown processes or file names is quite a regular occurrence that can lead to certain apprehensions for users. Lsass.exe is one such file that commonly confuses. In this comprehensive guide, we will explore the essence of Lsass.exe, its functional role in your computer system, and the potential necessity of its removal.

What is Lsass.exe?

Lsass.exe stands for “Local Security Authority Subsystem Service.” It is a crucial system process in the Windows operating system responsible for various security-related functions. Lsass.exe is responsible for enforcing the security policy on the system, authenticating users during the login process, and maintaining security credentials.

Is Lsass.exe malware?

No, Lsass.exe is not malware itself. It is a legitimate system process that is an integral part of the Windows operating system. However, it’s worth noting that malware authors may attempt to imitate or exploit the name of Lsass.exe for malicious activities.

There have been instances where malware has used names similar to legitimate processes to deceive users and hide their malicious activities. These malicious files may be named “Lsass.exe” or have similar variations. Therefore, verifying the location and digital signature of the Lsass.exe file running on your system is crucial to determine its legitimacy.

How to remove Lsass.exe?

Generally speaking, it’s not necessary to delete Lsass.exe from your system. It is a crucial part of particular software, and its removal could disrupt its licensing and activation procedures.

Nonetheless, adopting some protective measures is recommended if you observe any strange activities or have reasons to believe that the file might have been tampered with. Here are a few actions you could consider:

  1. Employ a trustworthy security application like Malwarebytes to scan your system for potential threats like viruses and malware.
  2. Ensure your software is updated to the most recent version. Lsass.exe regularly issues updates to mend security loopholes and enhance software performance.
  3. If you continue to doubt the authenticity of Lsass.exe, don’t hesitate to contact their customer support. They are equipped to provide necessary guidance and help authenticate the file’s integrity.

Bear in mind that any alteration or deletion of key system files could yield undesired outcomes and potentially hinder the operation of your software. As such, it’s crucial to proceed with caution and seek expert advice if you find yourself in a state of uncertainty.

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What are common issues with Lsass.exe?

Lsass.exe is generally a stable Windows software component, but like any program, it can occasionally encounter issues. Some of the common issues users might experience with Lsass.exe include:

Lsass.exe High CPU Usage

This file might sometimes use unusually high CPU resources, which could slow down your system. This might be due to outdated software or temporary glitches in the system.

Lsass.exe Error Messages

Users might encounter error messages related to Lsass.exe, resulting from issues with the software, connectivity problems, or even outdated software.

Lsass.exe potential security threats

In some rare instances, malware or viruses may disguise themselves as Lsass.exe. If the file is located outside the regular folder or exhibits suspicious behavior, it might be a security threat.

Lsass.exe Conflicts

Conflicts with other software or system processes could sometimes cause issues with Lsass.exe, leading to system instability or crashes.

What if I do not trust Lsass.exe?

Suppose you do not trust Lsass.exe. Try to scan your computer for any potential malware that might have been installed without your consent.

Malwarebytes anti-malware is an essential tool in the fight against malware. Malwarebytes can remove many types of potential Lsass.exe malware that other software does often miss. Malwarebytes is costing you absolutely nothing. When cleaning up an infected computer, Malwarebytes has always been free, and I recommend it as an essential tool in the battle against malware.

Download Malwarebytes

Install Malwarebytes, and follow the on-screen instructions.

Click Scan to start a malware scan.

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Wait for the Malwarebytes scan to finish. Once completed, review the Lsass.exe detections.

Click Quarantine to continue.

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Reboot Windows after all the adware detections are moved to quarantine.

Reboot Windows - Malwarebytes

Continue to the next step.

In this second malware removal step, we will start a second scan to ensure no malware remnants are left on your computer. HitmanPRO is a cloud scanner that scans every active file for malicious activity on your computer and sends it to the Sophos cloud for detection. In the Sophos cloud, both Bitdefender antivirus and Kaspersky antivirus scan the file for malicious activities.

Download HitmanPRO

When you have downloaded, HitmanPRO, install the HitmanPro 32-bit or HitmanPRO x64. Downloads are saved to the Downloads folder on your computer.

Open HitmanPRO to start the installation and scan.

install hitmanpro

Accept the Sophos HitmanPRO license agreement to continue. Read the license agreement, check the box, and click on Next.

hitmanpro license

Click the Next button to continue Sophos HitmanPRO installation. Make sure to create a copy of HitmanPRO for regular scans.

hitmanpro installation scan settings

HitmanPRO begins with a scan. Wait for the antivirus scan results.

Hitmanpro classifying scan

After the scan, click Next and activate the free HitmanPRO license. Click on Activate Free license.

hitmanpro activate free license

Enter your e-mail for a Sophos HitmanPRO free thirty days license. Click on Activate.

hitmanpro free license email

The free HitmanPRO license is successfully activated.

hitmanpro license activated

You’ll be presented with the malware removal results. Click Next to continue.

hitmanpro malware removal results

Malicious software was partially removed from your computer. Restart your computer to complete the removal.

hitmanpro reboot computer

Stay safe!

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Last Update: June 29, 2023