File Name: AuthExt.dll
Bit: 32
Latest version: 10.0.14393.0
Size: 87 kb
Language: U.S. English
Description: Authentication Extensions
Company: Microsoft Corporation

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Download authext.dll file for Windows 7, Windows 8, Windows 10 and fix authext.dll is missing or not found dll error. The latest version of authext.dll file is v10.0.14393.0 which is a 32 with a file size of approximately 87 kb. Microsoft Corporation is the developer of authext.dll and the file belongs to Authentication Extensions.

What is authext.dll ?

DLL stands for Dynamic Link Library. authext.dll is a file that contains code, resources and data that other programs can use. Thus, Dlls provide a way to modularize applications so that their functionality can be updated and reused by other applications. Dll's also help to reduce application size and memory footprint since many applications can share the same code contained in a single Dll file such as authext.dll.

How to fix authext.dll error?

If you are here because your seeing authext.dll errors in your Windows such as :

  • authext.dll not found
  • authext.dll is missing
  • Failed to load authext.dll
  • or any other similar dll error

There are number of ways to fix authext.dll errors. Below you will find 2 such ways:

How to install authext.dll file?

Where do I put authext.dll file? Download authext.dll and copy it to the application’s installation folder.

Make sure to download authext.dll 32-bit file for 32-bit Windows operating system and authext.dll 64-bit file for 64-bit Windows operating system if they are available. Most new Windows systems would probably be a 64-bit one. You can check to see if your computer is running a 32-bit or a 64-bit version of Windows by doing:

Windows 10 and Windows 8.1
  • Select the Start button, then select Settings > System > About.
  • At the right, under Device specifications, see System type.
Windows 7
  • Select the Start button , right-click Computer, and then select Properties.
  • Under System, see the system type.

After you are done with above installation instructions, try restarting the application throwing authext.dll is missing error.

If that doesn’t fix the error, copy the authext.dll to the systems directory. This can vary between Windows OS versions. Check out the systems directory path for different Windows versions below:

  • C:\Windows\System (For Windows 95, 98, Me)
  • C:\WINNT\System32 (For Windows NT/2000)
  • C:\Windows\System32 (For Windows 7, Windows 8, Windows 10)

Restart your Windows and see if the error is fixed.

How to register authext.dll file?

If the error persists, try to register the authext.dll in Windows registry. This can be done by using the “REGSVR32” command prompt and giving the dll file authext.dll.

  • Windows > Click Start > Run
  • REGSVR32 authext.dll

Make sure you run the command as administrator from the Run Box.

Once you are done registering the authext.dll in the Windows system’s registry, you should be good to go. Restart your Windows once again and authext.dll missing error should be fix.

Clicking on 'Download authext.dll' button below will take you to the download page where you will see list of authext.dll versions with bit, file size and other details of of the file. It is recommended to download the latest version of authext.dll to fix dll errors which is v10.0.14393.0.

Download authext.dll