How to Repair dnsext.dll? Download Now

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

dnsext.dll file DNS extension 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 dnsext.dll related errors on your device. You can also download dnsext.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7 devices which will (most probably) allow you to solve the problem.

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

File info

General information
Filename dnsext.dll
File extension DLL
Description DNS extension DLL
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
MIME type application/octet-stream
File type Executable application
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 dnsext.dll file. dnsext.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 dnsext.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to dnsext.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 dnsext.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.

dnsext.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 dnsext.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 dnsext.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 dnsext.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 dnsext.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the dnsext.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 dnsext.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 dnsext.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 dnsext.dll file

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of dnsext.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\System32\

If the steps did not solve your dnsext.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 dnsext.dll
System Windows 10
File size 11776 bytes
Date 2017-03-18
File details
MD5 13827c2dc0dfd39b4ede002a5c449e59
SHA1 d4d0d18a31f5a2db80ae26b6fc69044588f3c24d
SHA256 7df27cfd05cc4841cdeda73f78c44e38b667b5be0e80e67976b63bfc26192f21
CRC32 6c353920
Example file location C:\Windows\System32\
Filename dnsext.dll
System Windows 8.1
File size 11264 bytes
Date 2014-11-21
File details
MD5 6a40fffa55e4c8ea1702184b33725e71
SHA1 f3bd05f50b6efd2808ac28e4fdc385d8ffba8c4a
SHA256 98867d1a93d478c17bf8dbc3e760912077d4c459fabb9a735293a00513e0cb27
CRC32 1f7fc3d1
Example file location C:\Windows\System32\
Filename dnsext.dll
System Windows 8
File size 8192 bytes
Date 2012-07-26
File details
MD5 2a763b6ae3536b592f5b0b1fa4ee70fe
SHA1 6c1c4e3aa4613c3af2ca6a8be3c20251c5a10452
SHA256 e720d94d705aa3b4962933f7865e90e8880418807e68e8c53f7daf18e388e5e9
CRC32 0a357870
Example file location 1: C:\Windows\System32\
Filename dnsext.dll
System Windows 7
File size 8192 bytes
Date 2009-07-14
File details
MD5 885d0942e0f28db90919be3129ecf279
SHA1 e5bb207f9d1eea153eb36f38221a89c23c2f6122
SHA256 5a10d90ee656ece3dca174d6f924641509819fc20cb6ef46b5e1723e52de85be
CRC32 215e235d
Example file location C:\Windows\System32\