DLL

F_authsspi.dll

Download and install F_authsspi.dll to fix missing or corrupted DLL errors.

(4 Files Available)
Last Updated

Repository Analysis

Company
Microsoft Corporation
Product
Internet Information Services
Description
SSPI authentication provider
Architecture
x86-64 (64 bit)
Metadata Consensus
4/4 Files 100%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare differences between variants.

Frequently Asked Questions

What is F_authsspi.dll?

Metadata analysis shows F_authsspi.dll is a Dynamic Link Library (DLL) and is described as SSPI authentication provider .

DLL files (Dynamic Link Library) are used by Windows programs to share code and resources. It allows multiple applications to use the same functions, improving performance and reducing redundancy. Most errors occur because the DLL is missing, corrupted, or outdated.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 F_authsspi.dll errors?

Most errors involving F_authsspi.dll occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application or replacing the DLL resolves the issue. The steps below cover the most common ways to fix DLL errors.

  • Software DLLs: Fully un-install the application and then re-install the latest version. If you are not sure what software is causing problems, check available metadata for clues. If this does not solve your issue, you can try downloading and installing the DLL manually.
  • Windows DLLs: Make sure Windows is fully updated, then open Windows Terminal or PowerShell as an administrator. Repair the Windows component store so SFC can pull clean files DISM /Online /Cleanup-Image /RestoreHealth and then scan all system files sfc /scannow to automatically repair problems.
How do I install F_authsspi.dll?

To install F_authsspi.dll, place the DLL file in the same folder as the application’s .exe file. If you are not sure which version (32-bit or 64-bit) to use, you can safely install both. If you dont know the application or this does not work, install the DLL to the appropriate Windows system folder.

  • Software Install (Recommended): If known, place the DLL file next to the application’s .exe C:\path\to\exe\F_authsspi.dll.
  • 64-bit Install: Place 64-bit DLL files in the System32 folder, C:\Windows\System32\F_authsspi.dll
  • 32-bit Install: Place 32-bit DLL files in the SysWOW64 folder, C:\Windows\SysWOW64\F_authsspi.dll
How do I register F_authsspi.dll?

Most DLL files do not need registration, but some DLLs are COM components and must be registered to work correctly. If registration is required, open Windows Terminal or PowerShell as an administrator.

  • 64-Bit DLL: Register the DLL file regsvr32 "C:\path\to\F_authsspi.dll". (Drag a DLL to automatically fill the full path).
  • 32 Bit DLL: If you are registering a 32-bit DLL on 64-bit Windows, C:\Windows\SysWOW64\regsvr32 "C:\path\to\F_authsspi.dll".

Latest Releases

F_authsspi.dll
by Microsoft Corporation
for Internet Information Services
SSPI authentication provider
Version: 10.0.26013.1000 (WinBuild.160101.0800) Verified
Product Version: 10.0.26013.1000
Language: U.S. English (1033)
Uploaded: Sep 12, 2025   Size: 86KB
SHA256: b951703d8705c3035a128e469ed892d14d1e5340f519d58f351dee3e89e3e403
SHA1: 6b2f8d8d6e33bd5a935916fbb4a1016272c2de83
MD5: 3afe5a2a09049b0022254728f1830cbf
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
F_authsspi.dll
by Microsoft Corporation
for Internet Information Services
SSPI authentication provider
Version: 10.0.26013.1000 (WinBuild.160101.0800) Verified
Product Version: 10.0.26013.1000
Language: U.S. English (1033)
Uploaded: May 20, 2024   Size: 86KB
SHA256: 90e5c82f24ac0e0b7a1722e08823f5d645d0709e6273179cc83ea5cfc8bc97e6
SHA1: 110f26145eb81d1b405f4a927e9ef0fadf847c46
MD5: 591a2c2dc7a2b4e95c92a0f71889e18e
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
F_authsspi.dll
by Microsoft Corporation
for Internet Information Services
SSPI authentication provider
Version: 8.0.8418.0 (winmain(eokim).1205211722) Verified
Product Version: 8.0.8418.0
Language: U.S. English (1033)
Uploaded: Nov 29, 2022   Size: 51.6KB
SHA256: 450e5fa9bb7b84fbe6fd63698e54c63cfdeec82130a23456542cb6ecde732ad4
SHA1: 6e9f37811be0782cd0b80f5efc1f0928f2d34aee
MD5: 0d9d1b1a26bf3abe9b1ff5868e52db86
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
F_authsspi.dll
by Microsoft Corporation
for Internet Information Services
SSPI authentication provider
Version: 10.0.25095.1000 (IIS_EXPRESS.2204131324)
Product Version: 10.0.25095.1000
Language: U.S. English (1033)
Uploaded: Oct 27, 2022   Size: 113.9KB
SHA256: a3908451fa528db9b7bddda9c08110d728ca15a3423f057196fcf989b780a05a
SHA1: 7a8054b3517d10c9b496858b7c31ff3540b9d8de
MD5: 6cc62fe59ed858f27e6ee8605e39e6c8
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD