ONMAIN.dll File Information
  • DLL File Name:ONMAIN.dll
  • File Type:Win32 DLL
  • Product Name:Microsoft OneNote
  • Developer:Microsoft Corporation
  • File Version:2 versions available
  • File Size:2.9MB - 10.66MB
  • Language Code:English (U.S.) - Neutral
  • Character Set:Windows, Latin1
  • MD5 Checksum:Multiple Files
  • Copyright:unknown

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fix ONMAIN.dll error

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ONMAIN.dll Errors and Solutions

Microsoft OneNote Main

The file ONMAIN.dll is a 32bit Windows DLL module for Microsoft OneNote software or other related programs. The file and the associated Microsoft OneNote software was developed by Microsoft Corporation.

ONMAIN.dll file is a critical component for the software to work properly and without any dll error messages. You may receive an error message like the ones below that indicates the file is not found, damaged, or the wrong version.

  • This application failed to start because ONMAIN.dll was not found.
  • The file ONMAIN.dll is missing or corrupted.
  • A required component is missing: ONMAIN.dll. Please install the application again.
  • Error loading ONMAIN.dll. The specified module could not be found.
  • The program can't start because ONMAIN.dll is missing from your computer. Try reinstalling the program to fix this problem.
  • ONMAIN.dll is either not designed to run on Windows or it contains an error.

To fix the error, you need to copy the missing ONMAIN.dll file to your system or replace the corrupted dll file with a working one by following the instructions below. There are 2 different versions of the dll file available for download with sizes between 2.9MB - 10.66MB.

How to Install ONMAIN.dll

You can download ONMAIN.dll for free from the download section on this page. After you download the compressed 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 or game, or install .dll file directly to Windows (Windows XP, Vista, Windows 7, Windows 10).

Install DLL File to Program Folder

Copy the extracted ONMAIN.dll file to the installation folder 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 .DLL file directly to Windows.

Register DLL File Using Microsoft Regsvr

Copy the file to "C:\Windows\SysWOW64\" (32bit)

Copy the file to "C:\Windows\System32\" (64bit)

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 ONMAIN.dll & %windir%\SysWoW64\regsvr32.exe ONMAIN.dll

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Download ONMAIN.dll
Version OS Size Language Download
16.0.6965.180 32bit 10.7MB Neutral Download
11.0.5601.0 32bit 2.9MB English 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...

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