• The original LockAppHost.exe is system file and an important part of Windows. It rarely causes problems but if it's start hogging on memory, it's a sign of issues.
• The first step would be to restart LockAppHost service and if that doesn't work, a good idea would be to perform a SFC scan to check for corrupted files.
• RAM is a very crucial resource for your computer so it's important to know how to manage it. Please go to our Computer memory tips and guides section to find more information.
• For any problems or information about Windows 10 visit our Windows 10 fix hub where you can also find a lot of solutions to your possible problems.

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Various things could cause a high memory usage not just in Windows 10, but also in all previous versions of Windows.

This time, a couple of Windows 10 users complained online about how they found out that the LockAppHost.exe process is causing high memory usage without any particular reason.

So in this article, we’ll try to solve this issue, as we prepared a few possible solutions for memory leak in Windows 10, caused by LockAppHost.exe.

How can I prevent LockAppHost from using a lot of memory?

Solution 1 – Restart LockAppHost service

Simple restarting LockAppHost process could potentially solve the problem, so that’s what we’re going to try first. To restart LockAppHost process, do the following:

If restarting the process didn’t get the job done, we have a few more old school solutions for you.

Solution 2 – Run SFC Scanner

SFC Scanner is old Windows’ own tool for diagnosing and solving various system-related problems. So we’ll try to use SFC scanner to solve our problem, as well.

To run SFC Scanner in Windows 10, do the following:

Enter the following line and press Enter: sfc/scannow

Solution 3 – Check for viruses

Some IT experts often connect high CPU usage caused by LockAppHost with a virus, or some kind of other malicious software.

So, it won’t hurt if you run your antivirus program and completely scan your system for any suspicious activities.

If you don’t use an antivirus program on your computer, scanning your system with Windows Defender can also get the job done.

But if you want a deep, more detailed scan, some third party software is probably the best option.

If you still didn’t decide which antivirus program you want to use, check out the list of the best antivirus programs for Windows 10, it will certainly help you to make the right decision.

Solution 4 – Lock and unlock your computer

If LockAppHost.exe is draining your computer memory, try locking your device and then log back in. Many users confirmed that this basic workaround helped them solve the problem.

I have the same problem, and the last time I investigated it seemed to have something to do with the lock screen modal. I locked my machine (Win + L) and re-logged in, and it went away

Solution 5 – Disable Windows 10’s lock screen

This solution requires a bit of patience, but some users confirmed it works, so it’s worth trying it.

By disabling Windows 10’s lock screen you can resume your Windows session much faster and jump straight to the log in screen.

Here are the steps to disable the LockApp folder:

Launch File Explorer > navigate to go to C:Windows > SystemApps > Microsoft.LockApp_cw5n1h2txyewy

Keep in mind that this solution doesn’t permanently remove the lock screen. When you reboot your PC, the lock screen will be there, but it won’t appear when you wake it up from sleep.

That’s about it, I hope at least some of these solutions helped you reduce the high CPU usage on your Windows 10.

If you have any comments, or questions, just reach for the comments, below.

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