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api-ms-win-security-base-l1-1-0.dll - Analyze and How to Fix Errors

β˜…β˜…β˜…β˜…β˜… Verified File (27.08.2026)

⚠️ Important Notice: Discover details about api-ms-win-security-base-l1-1-0.dll, including its function and importance in system security. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:64-bit (x64)Compatible with only 64-bit Windows
File version10.0.19041.1
Antivirus scanβœ… Clean No viruses detected.
Digital signatureβœ… Have signedFile have signature, it is original file.
Hash Integrityβœ… MD5: VerifiedFile Hash protection is missing.
File size17 kb.17424 bytes.

Hashes:

MD5: 64511836d8e36b045debddf155273610 βœ…
SHA-1: a93da9f09e026f3d99455cd306633a67f86b96c9
SHA-256: 5cdc2ce6bf15ff37f3de842ccfa4c33cc2cea2f1441ffaff8b22a5254bce47ce
SHA-512: 7702b9dedca92f0d7246a85839919a73e6ab348c87a6f66137584abd09c195288529d2861c8d469458081b0813fe6c4b47fa20353c100bb657348248f3f2f12a

Digital file signature api-ms-win-security-base-l1-1-0.dll βœ…

Publisher: Microsoft Corporation
Issuer: Microsoft Windows Production PCA 2011
Encryption algorithm: SHA256
Time stamp: Dec 7 00:57:06 2019 GMT

βœ… This file is compatible with 64-bit Windows and ❌ will not work on a 32-bit operating system.

The error api-ms-win-security-base-l1-1-0.dll is missing usually happens when a program needs the Universal C Runtime in Windows, but the files are corrupted, outdated, or missing.

Here is how to fix this issue safely without downloading files from risky third-party DLL websites.

1. Install Windows Updates

This DLL is part of the Windows operating system framework. Updating Windows automatically replaces or repairs it.

  • Open the Start Menu.
  • Type Check for updates and press Enter.
  • Click the Check for updates button.
  • Install all available updates and restart your computer.

2. Repair or Install Microsoft Visual C++ Redistributable

The missing file is included in the Visual C++ Redistributable package. Repairing the current installation usually fixes the error.

  • Press Windows Key + R to open the Run dialog box.
  • Type appwiz.cpl and press Enter to open Programs and Features.
  • Look through the list for Microsoft Visual C++ 2015-2022 Redistributable (or older versions like 2015 or 2017).
  • Right-click the package and select Change.
  • Click Repair in the window that pops up.
  • Restart your PC after the process finishes.

3. Run SFC and DISM System Scans

Windows has built-in tools to find and fix broken system files automatically.

  • Type cmd in the Windows search bar.
  • Right-click Command Prompt and select Run as administrator.
  • Type DISM.exe /Online /Cleanup-image /Restorehealth and press Enter. Wait for it to finish.
  • Type sfc /scannow and press Enter.
  • Restart your computer after the scan completes.

4. Reinstall the Program Causing the Error

If the error only happens when opening one specific app, that app's installation might be corrupted.

  • Open Programs and Features (appwiz.cpl).
  • Find the problematic application.
  • Right-click it and choose Uninstall.
  • Reinstall the application using its official installer.

πŸ“Š Diagnostics Tool: Verify Your api-ms-win-security-base-l1-1-0.dll File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.

Connected files:
api-ms-win-security-base-l1-1-0.dll
Other versions:
️ api-ms-win-security-base-l1-1-0.dll 10.0.19041.1 32-bit (x86)
Microsoft Corporation