How to fix : "local security authority process" high disk use. SO: Windows 11 I have the same problem on several computers, it appeared after Windows was updated.

I just recently encountered this issue and it drove me insane trying to fix it. While I saw many answers regarding Malware, the Dell Remediation program, virtual memory, and others; none of them resolved my issue. As it turns out, I discovered that the credential manager, which is a sub-service of the lsass.exe process would fail to open. This was a brand new laptop that we had added to the domain and set up a user profile on it. For some reason, this user could not access the credential manager and we could not identify any group policies that would cause this. The solution we found was to create a registry entry granting local permissions to the credential manager. https://community.appuals.com/t/how-to-fix-credential-manager-error-0x80090345/3779 Solution 1 is the option we went with and thus far, the issue appears resolved.

Hi Everyone, In my case I followed the following steps:Ejecutaremos REGEDIT y seguiremos la siguiente ruta. HKEY_LOCAL_MACHINE\Software\Microsoft\Cryptography\Protect\Providers\df9d8cd0-1501-11d1-8c7a-00c04fc297eb Cambiaremos el valor de «ProtectionPolicy» a «1» Si ProtectionPolicy no existe hay que agregar el valor DWORD (32 bits) y luego cambie el valor a 1

How to fix : "local security authority process" high disk use.

Accepted answer

Millennium Group 105 Reputation points

2024-09-12T17:11:23.6666667+00:00

I just recently encountered this issue and it drove me insane trying to fix it. While I saw many answers regarding Malware, the Dell Remediation program, virtual memory, and others; none of them resolved my issue. As it turns out, I discovered that the credential manager, which is a sub-service of the lsass.exe process would fail to open. This was a brand new laptop that we had added to the domain and set up a user profile on it. For some reason, this user could not access the credential manager and we could not identify any group policies that would cause this. The solution we found was to create a registry entry granting local permissions to the credential manager.

https://community.appuals.com/t/how-to-fix-credential-manager-error-0x80090345/3779

Solution 1 is the option we went with and thus far, the issue appears resolved.
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6 people found this answer helpful.
Warinton Leelanontakun 0 Reputation points

2024-09-16T02:58:37.8+00:00

Thank you for the solution; it really helped me.

David Owens 0 Reputation points

2024-09-26T23:26:30.4033333+00:00

I had this issue on numerous Windows 11 workstations on a domain. Your solution is the fix I needed. Thank you. May I ask if your domain is running at an older Domain Functional Level? I suspect this might be the cause of the issue.

Mike Mayo 0 Reputation points

2024-10-01T15:21:07.3666667+00:00

Thank you for this! My company is using very old no longer supported Microsoft applications and servers, but new employees are getting windows 11 machines. This is causing all kinds of issues with Outlook and after the most recent Windows update several machines were experiencing hang ups and slow downs due to high disk usage of lsass.exe. solution 1 seems to have not only fixed that issue but now I am able to use outlook for email instead of the useless OWA. THANK YOU!!!

陳志嘉 0 Reputation points

2024-11-28T18:39:01.9666667+00:00

I also had this issue "Local Security Authority Process" high disk use on numerous Windows 11 23H2 or 24H2 workstations on a domain is running at an older Windows Server 2003.

Your solution 1 is the fix. Thank you so mush.

Joel Garcia Oviedo 40 Reputation points

2024-11-29T16:12:46.7466667+00:00

This option solved my problem.

Solution 1: Set the value of the ProtectionPolicy registry entry to enable local backup of the MasterKey

Carlo 0 Reputation points

2025-02-18T14:28:27.24+00:00

We have only one Windows 11 desktop PC in the company and until recently it worked fine. We don't use very often but when resumed the PC it was writing to disk like a crazy (by the way, the disk is a SSD so probably the OS wear off the disk quite a lot).

Setting the ProtectionPolicy registry entry as suggested solved the issue.
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How to fix : "local security authority process" high disk use.

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