Download and Fix CertPolEng.dll

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

CertPolEng.dll file Certificate Policy Engine. 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 CertPolEng.dll related errors on your device. You can also download CertPolEng.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, 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, Windows 7

File info

General information
Filename CertPolEng.dll
File extension DLL
Description Certificate Policy Engine
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 CertPolEng.dll file. CertPolEng.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 CertPolEng.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to CertPolEng.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 CertPolEng.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.

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

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

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

If the steps did not solve your CertPolEng.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 CertPolEng.dll
System Windows 10
File size 98816 bytes
Date 2017-03-18
File details
MD5 5b8fd8054fc4f7d537e57dd9a0240582
SHA1 a02ac2b602c9a02df2fadf6f691d11eb52b7accd
SHA256 730b3b455973981df1bc96d6e65ed58c320eab1954b6c02c488b26826914fccb
CRC32 77569e25
Example file location C:\Windows\System32\
Filename CertPolEng.dll
System Windows 8.1
File size 68608 bytes
Date 2014-11-21
File details
MD5 3f34f43d384363bc610186b8da3fb46a
SHA1 0600372d022d25d6af04104d7d6b5a8781c568e4
SHA256 8f4b4ebaa5dcab500e0141893676dc300bc0cde7e5ec84513fa01a1c7af21679
CRC32 87679a6e
Example file location C:\Windows\System32\
Filename CertPolEng.dll
System Windows 8
File size 75264 bytes
Date 2012-07-26
File details
MD5 5899e18d2794e1cf13f6ae27122e6e82
SHA1 09b4303c4fcfc705cc3868eb0f39e4833b682d75
SHA256 95fcdfd58dfa6ee05aa0a6f86416f78a9abcfb62a3be39a329038c185dd0e271
CRC32 35be8195
Example file location 1: C:\Windows\System32\
Filename CertPolEng.dll
System Windows 7
File size 65024 bytes
Date -0001-11-30
File details
MD5 44f5c1cf70ac8f7239f3b3667e58697a
SHA1 7e9d060ad51304efe2034c9721ba44dd44fc2187
SHA256 f9286dd09a4e5155b186aaf9b7dc860e44a796ca00f7e3eddabda60e28e77680
CRC32 64fdee9e
Example file location C:\Windows\SysWOW64\
Filename CertPolEng.dll
System Windows 7
File size 71680 bytes
Date 2010-11-21
File details
MD5 fce23e27f62989ad0bb88e256e847a41
SHA1 734b7123c17c301d855c42a38b9ebce76ff2bf3e
SHA256 80f7c8747ef15f2637bdb428e2ab6e80d3f591d2efc9d40d444f156ef036bf51
CRC32 91d8f488
Example file location C:\Windows\SysWOW64\