MSOSEC.DLL Informations - Download and Fix

Sometimes Windows system displays error messages regarding corrupted or missing MSOSEC.DLL files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent MSOSEC.DLL file can therefore effect in failed execution of the started process.

MSOSEC.DLL file Custom membership condition. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of MSOSEC.DLL related errors on your device. You can also download MSOSEC.DLL file compatible with Windows 10, Windows XP devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows XP

User popularity

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download MSOSEC.DLL

4.1 List of MSOSEC.DLL file versions

File info

General information
Filename	MSOSEC.DLL
File extension	DLL
Description	Custom membership condition

Software
Program	Visual Studio .NET Tools for Office
Author	Microsoft Corporation

Details
MIME type	application/octet-stream
File type	Dynamic link library
System	Win32
Copyrights	Copyright© Microsoft Corporation. All rights reserved.
Character set	Unicode
Language cod	Neutral

Most common MSOSEC.DLL file related problems

There are various types of errors related to MSOSEC.DLL file. MSOSEC.DLL file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to MSOSEC.DLL file. If you encounter one listed below (or similar), please consider the following suggestions.

MSOSEC.DLL is corrupted
MSOSEC.DLL cannot be located
Runtime Error - MSOSEC.DLL
MSOSEC.DLL file error
MSOSEC.DLL file cannot be loaded. Module was not found
cannot register MSOSEC.DLL file:
MSOSEC.DLL file could not be loaded
MSOSEC.DLL file doesn't exist

MSOSEC.DLL

Application could not be started because MSOSEC.DLL file is missing. Reinstall the application to solve the problem.

Problems related to MSOSEC.DLL can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing MSOSEC.DLL file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

How to fix MSOSEC.DLL errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

MSOSEC.DLL file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with MSOSEC.DLL file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Installing relevant Microsoft Windows patches and updates may solve your problems related to MSOSEC.DLL file. Use dedicated Windows tool to perform the update.

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of MSOSEC.DLL or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to MSOSEC.DLL file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the MSOSEC.DLL file with properly working version. To use the tool:

Go to the Windows "Start" menu
Type "cmd" in the search field
Locate "Command Prompt" result – don't run it yet:
Click the right mouse button and select "Run as Administrator" option
Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Another approach is to restore system to previous state, before the MSOSEC.DLL file error occured. In order to restore your system, follow the instructions below

Go to the Windows "Start" menu
Type "System Restore" in the search field
Start the system restore tool – it's name may differ depending on version of the system
The application will guide you through the process – read the messages carefully
After the process has finished, restart your computer.

If all the above-mentioned methods failed and the MSOSEC.DLL file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace MSOSEC.DLL file

The last solution is to manually download and replace MSOSEC.DLL file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded MSOSEC.DLL file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of MSOSEC.DLL file example directory paths.

Windows 10: C:\Program Files\Microsoft Office\Office15\ADDINS\
Windows XP: ---

If the steps did not solve your MSOSEC.DLL file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename MSOSEC.DLL

System Windows 10

File size 7168 bytes

Date 2017-05-10

Download

File details
	MD5	c45da2858efec664c9551cc6305049cc
	SHA1	5342cf439f592c62186f9635c5242edae104a2d8
	SHA256	6837ed2a6c72b593d509d71c00020fba7e510a243d42aea3ad7ad371e32ac354
	CRC32	39adcd23
	Example file location	C:\Program Files\Microsoft Office\Office15\ADDINS\

Filename MSOSEC.DLL

System Windows XP

File size 7168 bytes

Date 2017-05-10

Download

File details
	MD5	5cc6f558279777e46c6258b3c3d4e3da
	SHA1	5cd589e808418c7fcc68833bcbac20e4e47996dc
	SHA256	9befca3dc41ba5d9af221b9b2c27967883ded62737cf61868b12ecfcf08403a4
	CRC32	3bd7e33b
	Example file location	---