certca.dll Informations - Download and Fix

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

certca.dll file Microsoft® Active Directory Certificate Services CA. 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 certca.dll related errors on your device. You can also download certca.dll file compatible with Windows 10, Windows 8.1, Windows 8 devices which will (most probably) allow you to solve the problem.

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

File info

General information
Filename certca.dll
File extension DLL
Description Microsoft® Active Directory Certificate Services CA
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 certca.dll file. certca.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 certca.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to certca.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 certca.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.

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

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

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

  • Windows 10: C:\Windows\System32\
  • Windows 8.1: C:\Windows\System32\
  • Windows 8: 1: C:\Windows\System32\

If the steps did not solve your certca.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 certca.dll
System Windows 10
File size 641024 bytes
Date 2017-03-18
File details
MD5 6a1e1a51bb7e042233ce64b470019e7c
SHA1 27cc8c6e552e2bf583f07a385d7e6b6475f5bc83
SHA256 5769e7cc9262714c701baa5ce4980f138d7a55cbf7743b1c7362c5df02038b34
CRC32 4a603f4b
Example file location C:\Windows\System32\
Filename certca.dll
System Windows 8.1
File size 831488 bytes
Date 2014-11-21
File details
MD5 23f2db97c61dd70749a4f27d6527f97f
SHA1 2ae9c4178453e30975827e5e840d35f9332ca78f
SHA256 bf80f3d55ddf575f657cfe6746acf85ca66b9a11104e5d5c88479cba8749d851
CRC32 88bb03d3
Example file location C:\Windows\System32\
Filename certca.dll
System Windows 8
File size 260096 bytes
Date 2012-07-26
File details
MD5 ff7bbcc36387ce6e4a1eda4910f675f4
SHA1 afe3b5afa208f83992a5dcc4efd9c37750e0f614
SHA256 edadee5f8ffc9b7e025f734f6f7ea245e949f8f74b3815602bf5570a5eebf99d
CRC32 042911ab
Example file location 1: C:\Windows\System32\