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DLL

API-MS-Win-Security-Lsalookup-L2-1-0.dll

Download and install API-MS-Win-Security-Lsalookup-L2-1-0.dll to fix missing or corrupted DLL errors.

(27 Files Available)
Last Updated
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Repository Analysis

Company
Microsoft Corporation
Product
Microsoft® Windows® Operating System
Description
ApiSet Stub DLL
Architecture
x86-64 (64 bit) ARM64 x86 (32 bit)
Metadata Consensus
27/27 Files 100%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare variant differences.

Companies

  • Microsoft Corporation 27

Products

  • Microsoft® Windows® Operating System 27

Descriptions

  • ApiSet Stub DLL 27

Frequently Asked Questions

What is API-MS-Win-Security-Lsalookup-L2-1-0.dll?

Metadata analysis shows API-MS-Win-Security-Lsalookup-L2-1-0.dll is a Dynamic Link Library (DLL) developed by Microsoft Corporation for Microsoft® Windows® Operating System and is described as “ApiSet Stub DLL” .

DLL files (Dynamic Link Libraries) are shared core modules used by Windows programs to run efficiently without duplicating code. Most errors occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application, repairing Windows, or replacing the DLL resolves the issue.

How do I fix missing DLL errors?
1

Software Fix

Fully uninstall and reinstall the program causing the error. If you are not sure what program is broken, look at the available file metadata above for hints. If a clean reinstall fails, download and install the DLL file manually.

2

Windows System Fix

Make sure Windows is fully updated. To repair system files automatically, right-click the Start menu, open PowerShell (Admin), and run these two commands in order:

Step A DISM /Online /Cleanup-Image /RestoreHealth
Step B sfc /scannow
How do I install DLL files?
1

Download & Extract

Download the file, right-click the folder, and extract all files to your computer.

2

Install the .DLL

Move the extracted DLL file into the root folder of the software that is giving you the error (where its .exe file is located), or place it in the system directory below:

32-bit → C:\Windows\SysWOW64
64-bit → C:\Windows\System32
3

Restart the Program

Close and reopen the program or game so Windows can look for and load the new DLL file.

How do I register DLL files?

Most DLL files do not need registration. However, if your file is a COM component and requires explicit system registration, follow these steps:

1

Open Terminal

Right-click the Start menu and open PowerShell (Admin) or Command Prompt (Admin).

2

Run Command

Type the command below for your file type and press Enter. You can drag and drop the DLL file directly into the terminal window to fill its path automatically.

64-bit regsvr32 "C:\path\to\filename.dll"
32-bit C:\Windows\SysWOW64\regsvr32 "C:\path\to\filename.dll"

Latest Uploads

Browse all files to filter by metadata and to view the latest version available.

NEW
API-MS-Win-Security-Lsalookup-L2-1-0.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.26100.6 (WinBuild.160101.0800)
Product Version: 10.0.26100.6
Language: U.S. English (1033)
Uploaded: Sep 1, 2026   Size: 22.1KB
SHA256: cc37ade51d66a10191ba0b48d5f5b79ab44373bdd883b24cfd369bab0092cab5
SHA1: ef8c2c580994d97d3030414e6918852a9fcc4266
MD5: 23b3904bbc1afb6b7b198e39342ec3fa
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
API-MS-Win-Security-Lsalookup-L2-1-0.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.28000.4 (WinBuild.160101.0800)
Product Version: 10.0.28000.4
Language: U.S. English (1033)
Uploaded: Jul 4, 2026   Size: 15.7KB
SHA256: 01c10ef19a8d4877e02f7a2f8fed5eebdaf7c0103ef5bbc90c1c6154a00b3ebb
SHA1: 1be2fd57384bd4ff313288c044d359bd7fd00299
MD5: 650e2e7bfa9c8f1f8e2045585369b6ea
ARM 64 Bit
AArch64
DOWNLOAD
API-MS-Win-Security-Lsalookup-L2-1-0.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.28000.4 (WinBuild.160101.0800)
Product Version: 10.0.28000.4
Language: U.S. English (1033)
Uploaded: Jul 3, 2026   Size: 7.2KB
SHA256: e9470a4a2bf39af05a60be481aa5245cede02911d8f5bbc598f8226ea7b80ceb
SHA1: 72729c0be62807a5f9424c7462f5600021036529
MD5: 0aba5a0817ca5804cac811fbe8fda788
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
API-MS-Win-Security-Lsalookup-L2-1-0.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.28000.4 (WinBuild.160101.0800)
Product Version: 10.0.28000.4
Language: U.S. English (1033)
Uploaded: Jul 3, 2026   Size: 16.2KB
SHA256: 261374c1df3f2086f99223fc24bda6b17970b50ff8436ece4431b450beab433b
SHA1: 73b0fabba9784e0ada4a2bc46fd4acc50eb8d931
MD5: 772fca98a340aa6d2adb5caa63f5a926
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
API-MS-Win-Security-Lsalookup-L2-1-0.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.26100.2 (WinBuild.160101.0800)
Product Version: 10.0.26100.2
Language: U.S. English (1033)
Uploaded: Apr 17, 2026   Size: 16.2KB
SHA256: 949ceb8f600d8cc16be2862bd76c33f21ba2693a0c4e3853f9cdf15f0671d669
SHA1: 9aa35874ba5caf6b3d47e16a37808e7e42ad8d16
MD5: 431ebeb67515eff33884d0fac443439a
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD