Troubleshoot adsmsext.dll Errors and Download File

Sometimes Windows system displays error messages regarding corrupted or missing adsmsext.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 adsmsext.dll file can therefore effect in failed execution of the started process.

adsmsext.dll file ADs LDAP Provider DLL. 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 adsmsext.dll related errors on your device. You can also download adsmsext.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP

File info

General information
Filename adsmsext.dll
File extension DLL
Description ADs LDAP Provider DLL
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
MIME type application/octet-stream
File type Dynamic link library
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)

There are various types of errors related to adsmsext.dll file. adsmsext.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 adsmsext.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to adsmsext.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 adsmsext.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.

adsmsext.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

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with adsmsext.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.

Windows Update

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

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. 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 adsmsext.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

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 adsmsext.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the adsmsext.dll file with properly working version. To use the tool:

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

Step 4: Restoring Windows system

Windows Recovery

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

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

If all the above-mentioned methods failed and the adsmsext.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 adsmsext.dll file

The last solution is to manually download and replace adsmsext.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 adsmsext.dll file.

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

  • Windows 10: C:\Windows\System32\
  • Windows 8.1: C:\Windows\System32\
  • Windows 8: 1: C:\Windows\System32\
  • Windows 7: C:\Windows\SysWOW64\
  • Windows 7: C:\Windows\SysWOW64\
  • Windows Vista: ---
  • Windows Vista: ---
  • Windows XP: ---

If the steps did not solve your adsmsext.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 adsmsext.dll
System Windows 10
File size 88576 bytes
Date 2017-03-18
File details
MD5 4dc1762db41d4ffbec8c1aa0aecdb3e6
SHA1 1de3ec94b41a608c38a0ceee594f502e0cf3b79b
SHA256 9bdf5bcb78de1c52068f8bb9d5aed283e15a36e4fee4d1f07a4e50fb739f2127
CRC32 7424f1c9
Example file location C:\Windows\System32\
Filename adsmsext.dll
System Windows 8.1
File size 89600 bytes
Date 2014-11-21
File details
MD5 acc4714963c48692638cfd73c9c4dad2
SHA1 49dabd0e24cf772fca69966ee358078f3e749076
SHA256 a62fb8598d498ba71c575b5e3c2caf4ebb0b513e73e3b65e50988498c7afd871
CRC32 ef4ef8a9
Example file location C:\Windows\System32\
Filename adsmsext.dll
System Windows 8
File size 90112 bytes
Date 2012-07-26
File details
MD5 9bce94405d3d91dff5da0b35ad428a5b
SHA1 d1f6b741ba7877151796cb93ffafe3f6fc5c47a6
SHA256 935a18151e11284a8e5b19d6247652d04dc5dedce57466a11acb511e0c8f5a8b
CRC32 e5ed8ce1
Example file location 1: C:\Windows\System32\
Filename adsmsext.dll
System Windows 7
File size 77312 bytes
Date -0001-11-30
File details
MD5 d73e4cf4aa1b674f522c995174900076
SHA1 dae2b2b07aa525397986111d2d282f6837106ed6
SHA256 8390b6b54c3b4009bfa3cbc906cfe2ff328c6050428a1f224431b196f061649b
CRC32 869ab68c
Example file location C:\Windows\SysWOW64\
Filename adsmsext.dll
System Windows 7
File size 108032 bytes
Date 2009-07-14
File details
MD5 f96836c818c39b9515ffdbe7c26d1cf1
SHA1 2fba63035703d547b60d7f3318b27f476b90796b
SHA256 8250f4c363f2e352994c169d2759d9e46dcbc1aa2ca7fe44554c30e784a82c84
CRC32 c7ee1506
Example file location C:\Windows\SysWOW64\
Filename adsmsext.dll
System Windows Vista
File size 75264 bytes
Date -0001-11-30
File details
MD5 27fc7c228999d739c11f76120a121525
SHA1 cac2102d92e49e97d140c76d05793142178998cd
SHA256 b714fbf71c74cdd6254afbc364eff046759dd91b6f213efbd3374d76dcb83795
CRC32 bfafbf07
Example file location ---
Filename adsmsext.dll
System Windows Vista
File size 105472 bytes
Date 2009-04-11
File details
MD5 c6e7b39c1ab4b8dc6883efc72a770bed
SHA1 666bedcf27426be28ed61c7b54a63a419e77268e
SHA256 cad22b9a1feaabcff678e6fa5fb91aeb011afff06cbbbcf1cd190fc0fcdf6843
CRC32 3aa838a5
Example file location ---
Filename adsmsext.dll
System Windows XP
File size 68096 bytes
Date 2008-04-14
File details
MD5 c238f767e6742c2147964fdc070956e1
SHA1 8bbec823f6290f5e70a8638138a9faeab8d2016c
SHA256 00776be7247bbcbc0866dbccf8150369e8394ef3c6cc473432a4ac6fd216d3c1
CRC32 7b20ec31
Example file location ---