Download ACCOLK.DLL to Fix Errors

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

ACCOLK.DLL file Access Outlook Data Collection Addin. 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 ACCOLK.DLL related errors on your device. You can also download ACCOLK.DLL file compatible with Windows 10, Windows 7, Windows Vista, Windows 8 devices which will (most probably) allow you to solve the problem.

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

File info

General information
File extension DLL
Description Access Outlook Data Collection Addin
Program Microsoft Office 2010
Author Microsoft Corporation
MIME type application/octet-stream
File type Dynamic link library
System Windows NT 32-bit
Copyrights © 2010 Microsoft Corporation. All rights reserved.
Character set Windows, Latin1
Language cod Neutral

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

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



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


Problems related to ACCOLK.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 ACCOLK.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.

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

The last solution is to manually download and replace ACCOLK.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 ACCOLK.DLL file.

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

  • Windows 10: C:\Program Files\Microsoft Office\Office15\ADDINS\
  • Windows 7: C:\Program Files (x86)\Microsoft Office\Office14\ADDINS\
  • Windows Vista: ---
  • Windows 8: ---

If the steps did not solve your ACCOLK.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

System Windows 10
File size 97488 bytes
Date 2017-05-10
File details
MD5 743364c4f5a18a1ca35e4b77c8ff6228
SHA1 0ac2d52d52b01626745e91957e4c72627ceca56d
SHA256 86042fecf7f9acca8dd21b4c6c203f155fde61641d1c6ef6664e01272f698715
CRC32 5d72a828
Example file location C:\Program Files\Microsoft Office\Office15\ADDINS\
System Windows 7
File size 93576 bytes
Date 2017-05-10
File details
MD5 c8c887d04fca37939742df8a2bdb4d81
SHA1 9b30f01fb712f4c2ec488de99461101d48a28fd2
SHA256 d5c1749830faece6243284ca26ca7691f3733a070cb85b2e79e753de8b6f226e
CRC32 2863cd92
Example file location C:\Program Files (x86)\Microsoft Office\Office14\ADDINS\
System Windows Vista
File size 94016 bytes
Date 2017-05-10
File details
MD5 29b13c4dc15b610f6758de3fabab7dc4
SHA1 9919d1a60779ce82260acb3beec9596f0fccd6e2
SHA256 f8680f8601682d53ef9c8e2792bb077c3ffda78ab0cc4a3505efeac9693d6776
CRC32 a1bc5a7f
Example file location ---
System Windows 8
File size 97488 bytes
Date 2017-05-10
File details
MD5 743364c4f5a18a1ca35e4b77c8ff6228
SHA1 0ac2d52d52b01626745e91957e4c72627ceca56d
SHA256 86042fecf7f9acca8dd21b4c6c203f155fde61641d1c6ef6664e01272f698715
CRC32 5d72a828
Example file location ---