w3isapi.dll File Information
  • DLL File Name:w3isapi.dll
  • File Type:Win32 DLL
  • Product Name:Internet Information Services
  • Developer:Microsoft Corporation
  • File Version:6.0.3790.3959
  • File Size:61KB (62464 bytes)
  • Language Code:Neutral
  • Character Set:Unicode
  • MD5 Checksum:d5040c52f45153100d1d751b4ee8d09c
  • Copyright:© Microsoft Corporation. All rights reserved.
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W3isapi.dll Errors and Solutions

IIS ISAPI Handler

The file w3isapi.dll is a 32bit Windows DLL module for Internet Information Services or other related programs. The file and the associated Internet Information Services software was developed by Microsoft Corporation. The file was licensed as © Microsoft Corporation. All rights reserved..

w3isapi.dll file is a critical component for the software to work properly without any problems. You may receive an error message like the ones below that indicates the file is not found or damaged.

  • This application failed to start because w3isapi.dll was not found.
  • The file w3isapi.dll is missing or corrupted.
  • A required component is missing: w3isapi.dll. Please install the application again.
  • Error loading w3isapi.dll. The specified module could not be found.
  • The program can't start because w3isapi.dll is missing from your computer.

To fix the error, you need to copy the missing w3isapi.dll file to your system or replace the corrupted dll file with a working one by following the instructions below. The current version of dll file available on our site is 6.0.3790.3959 with a size of 61KB.

How to Install w3isapi.dll

You can download w3isapi.dll for free from the download section on this page. After downloading the zip file, unzip it to a convenient location on your computer. In order to fix dll related errors, you need to copy the .dll file to the installation folder of the application/game, or install .dll file directly to Windows (Windows XP, Vista, Windows 7, Windows 10).

Install DLL File to Program Folder

· Copy the extracted w3isapi.dll file to the installation directory of the application or game.

· Check if the problem is solved. If the problem persists or you are not sure which software is having problems, install the file directly to Windows system folder.

Register DLL File Using Microsoft Regsvr

· Copy the file to "C:\Windows\System32\"

· You can install the .dll file in both system folders without any problems. In order to complete this step, you must run the Command Prompt as administrator.

· Open the Start Menu and before clicking anywhere, type "cmd" on your keyboard.

· Right-click the "Command Prompt" search result and click the "Run as administrator" option.

· Paste the following command into the Command Line window that opens up and press Enter key.

· %windir%\System32\regsvr32.exe w3isapi.dll

Download w3isapi.dll
Version OS Size Language Download
6.0.3790.3959 32bit 61KB Neutral Download

Please note : This is a free download. No guarantees or warranties are given or implied. Please download and install the file at your own risk...

About Developer
Microsoft Corporation

Microsoft is an American multinational technology corporation which produces computer software, consumer electronics, personal computers, and related services. Microsoft Corporation is the developer of 10287 dll files in our archive, available for free download, including popular files like msvcp140.dll, vcruntime140.dll, api-ms-win-crt-runtime-l1-1-0.dll, xlive.dll.

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