CORPerfMonExt.dll Troubleshoot and Download

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

CORPerfMonExt.dll file Dynamic Link Library. The file was developed by Microsoft for use with Windows software. Here you will find detailed information about the file and instructions how to proceed in the event of CORPerfMonExt.dll related errors on your device. You can also download CORPerfMonExt.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista 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

File info

General information
Filename CORPerfMonExt.dll
File extension DLL
Type Dynamic Link Library
Description Dynamic Link Library
Program Windows 10
Software Windows
Author Microsoft
Software version 10
File size 128696
Oldest file 2009-04-11
Latest file 2017-03-18

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

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



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


Problems related to CORPerfMonExt.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 CORPerfMonExt.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.

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

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

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

  • Windows 10: C:\Windows\Microsoft.NET\Framework\v4.0.30319\
  • Windows 8.1: C:\Windows\Microsoft.NET\Framework\v4.0.30319\
  • Windows 8: 1: C:\Windows\Microsoft.NET\Framework\v4.0.30319\
  • Windows 7: C:\Windows\Microsoft.NET\Framework\v2.0.50727\
  • Windows 7: C:\Windows\Microsoft.NET\Framework\v2.0.50727\
  • Windows Vista: ---
  • Windows Vista: ---

If the steps did not solve your CORPerfMonExt.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 CORPerfMonExt.dll
System Windows 10
File size 128696 bytes
Date -0001-11-30
File details
MD5 6a1b044c23b4d7efe17b2f1c6a821951
SHA1 ae064ca0d4fcfc7f6e31dbc2326f76d9f8e1ea90
SHA256 9769cd7faca88ce9f0ee288b8f96d600ee2251becf711b182d8173562a0977f1
CRC32 6cfcc890
Example file location C:\Windows\Microsoft.NET\Framework\v4.0.30319\
Filename CORPerfMonExt.dll
System Windows 8.1
File size 127584 bytes
Date -0001-11-30
File details
MD5 1e0b4da2cb02df11b2a73550e627e339
SHA1 3878acc102f03f81def467ea39dbf9554c205885
SHA256 c77bf2de87187daeeda77d7a5c2256ae85a0aedfbb4c6e0fa1e2a11decd82eb8
CRC32 245d6b70
Example file location C:\Windows\Microsoft.NET\Framework\v4.0.30319\
Filename CORPerfMonExt.dll
System Windows 8
File size 131528 bytes
Date -0001-11-30
File details
MD5 03e45b7c376d4710deea151213975739
SHA1 c4b93535e079b782c50fa88b4a4f599d503692ea
SHA256 9edf2f14ab38c188db1073b60c7eef55321fd8a904e3b3d9fb5c4ef89f823a08
CRC32 aec38172
Example file location 1: C:\Windows\Microsoft.NET\Framework\v4.0.30319\
Filename CORPerfMonExt.dll
System Windows 7
File size 86872 bytes
Date -0001-11-30
File details
MD5 558bc0fc031ad9be4b954d5834adfb99
SHA1 43c82ea689a90ec69f90b5bad42f6c81aa36b5d3
SHA256 ed162fa79eb35a35a2b826a6c0e57e4c98594771edad6e73080f147b5d9b3a16
CRC32 786e1ec2
Example file location C:\Windows\Microsoft.NET\Framework\v2.0.50727\
Filename CORPerfMonExt.dll
System Windows 7
File size 94040 bytes
Date -0001-11-30
File details
MD5 9e9967ee2de6e602146e9e0680798594
SHA1 54490184f051a6f15955e9ec15f78b83bb8ced7d
SHA256 647853e418ea12e1ed3da614b7dca1b8fcd575f78a31bcfabc55601cfa7b49ca
CRC32 61c6b795
Example file location C:\Windows\Microsoft.NET\Framework\v2.0.50727\
Filename CORPerfMonExt.dll
System Windows Vista
File size 93512 bytes
Date -0001-11-30
File details
MD5 72ebecf44c22e571550c1388d86db5d6
SHA1 afbc7b4a9d64239d80ec058d7341ff770e583dd3
SHA256 e44def40d348f2e2a2d3fc76db89c15666b61b68d202cdf6ec364a062ab6f1f6
CRC32 1ad6de9f
Example file location ---
Filename CORPerfMonExt.dll
System Windows Vista
File size 86360 bytes
Date -0001-11-30
File details
MD5 dc5c85fec957a531518007fae54bac0c
SHA1 3a34fa5711e618b5ac86c2001618594b38fe30b5
SHA256 50c3f85b12a21893909083a16a630baea853f579661a4bc4b9e022428f095ea6
CRC32 28ef2967
Example file location ---