xpcom.dll File Information
  • DLL File Name:xpcom.dll
  • File Type:Win32 DLL
  • Product Name:Firefox
  • Developer:Mozilla Foundation
  • File Version:3 versions available
  • File Size:17.46KB - 487.67KB
  • Language Code:Neutral
  • Character Set:Unicode
  • MD5 Checksum:Multiple Files
  • Copyright:License: MPL 1.1/GPL 2.0/LGPL 2.1
Xpcom.dll Errors and Solutions

The file xpcom.dll is a 32bit Windows DLL module for Firefox software or other related programs. The file and the associated Firefox software was developed by Mozilla Foundation. The file was licensed as License: MPL 1.1/GPL 2.0/LGPL 2.1.

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

To fix the error, you need to copy the missing xpcom.dll file to your system or replace the corrupted dll file with a working one by following the instructions below. There are 3 different versions of the dll file available for download with sizes between 17.46KB - 487.67KB.

How to Install xpcom.dll

You can download xpcom.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 xpcom.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 Register Server

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

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Download xpcom.dll
Version OS Size Language MD5 DL 32bit 19.4KB Neutral ed866.. 32bit 19.5KB Neutral d45ae.. 32bit 17.5KB Neutral 1ba73..
unknown 32bit 487.7KB unknown c589e..

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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External Resources

Xpcom.dll - What Is Xpcom.dll? - Processlibrary.com - The Online- - www.processlibrary.com

Xpcom.dll could be a harmful windows process. find out what xpcom.dll is doing on computer, whether its safe, info on related errors and how to remove it.


Xpcom.dll Not Found? - Tcb Networks Computer Support In Kalamazoo- - www.tcbmi.com

I get a similar problem only it is he procedure entry point ns_ alloc could not be located in the dynamic link library xpcom.dll; this only happens when using stroke-


Help: Xpcom.dll Not Found - Velocity Reviews - Computer Hardware - www.velocityreviews.com

When i unzip and open the thunderbird exe. file it says a required file xpcom.dll not found? should i go find this dll file in order to try this mail program? i