cmpbk32.dll Informations - Download and Fix

Sometimes Windows system displays error messages regarding corrupted or missing cmpbk32.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 cmpbk32.dll file can therefore effect in failed execution of the started process.

cmpbk32.dll file Microsoft Connection Manager Phonebook. 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 cmpbk32.dll related errors on your device. You can also download cmpbk32.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP 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, Windows XP

File info

General information
Filename cmpbk32.dll
File extension DLL
Description Microsoft Connection Manager Phonebook
Program Microsoft(R) Connection Manager
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 cmpbk32.dll file. cmpbk32.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 cmpbk32.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

  • cmpbk32.dll is corrupted
  • cmpbk32.dll cannot be located
  • Runtime Error - cmpbk32.dll
  • cmpbk32.dll file error
  • cmpbk32.dll file cannot be loaded. Module was not found
  • cannot register cmpbk32.dll file:
  • cmpbk32.dll file could not be loaded
  • cmpbk32.dll file doesn't exist



Application could not be started because cmpbk32.dll file is missing. Reinstall the application to solve the problem.


Problems related to cmpbk32.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 cmpbk32.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.

cmpbk32.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 cmpbk32.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 cmpbk32.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 cmpbk32.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 cmpbk32.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the cmpbk32.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 cmpbk32.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 cmpbk32.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 cmpbk32.dll file

The last solution is to manually download and replace cmpbk32.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 cmpbk32.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of cmpbk32.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\
  • Windows 7: C:\Windows\System32\
  • Windows Vista: ---
  • Windows Vista: ---
  • Windows XP: ---

If the steps did not solve your cmpbk32.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 cmpbk32.dll
System Windows 10
File size 24064 bytes
Date 2017-03-18
File details
MD5 ca62d8f8a478301b3bc9814c809c483f
SHA1 cd8e8cbcbec69f9f5a06f6b0715237bbbe1466db
SHA256 c1a05efa802baf9344b01cf225374fe55428482c641fab950e651ddc7182de56
CRC32 637c44f2
Example file location C:\Windows\System32\
Filename cmpbk32.dll
System Windows 8.1
File size 25088 bytes
Date 2014-11-21
File details
MD5 b9bfa5d63ac8ed19d5bd02e52c7e3cf7
SHA1 a3187646ecd0f67367f449fce5d97aea1da17679
SHA256 8ea7ffe8353695c4291cf3dc775ab2811fcfeea4746e96a52ca49cc77debd09a
CRC32 6aaf46e1
Example file location C:\Windows\System32\
Filename cmpbk32.dll
System Windows 8
File size 26112 bytes
Date 2012-07-26
File details
MD5 c8c32f0816494ff00fe15e9d9b24744c
SHA1 3b7fa71547b4a5620f885970174c74e1f26d1fba
SHA256 1d2e6beb3f4fac230f948086a902c1afcdac7866e13946d7c566af6c22e455c6
CRC32 d3b49a51
Example file location 1: C:\Windows\System32\
Filename cmpbk32.dll
System Windows 7
File size 28672 bytes
Date 2009-07-14
File details
MD5 04478bad421d21ede6ebfbafddaee32c
SHA1 fd1cfb3e3354f52d5cc349ac35f8c10f8ee9a0d0
SHA256 9ac93320189dbc6101d43311a5680615b8c70afdf780d6ce23eb6982af92871d
CRC32 b476c996
Example file location C:\Windows\System32\
Filename cmpbk32.dll
System Windows 7
File size 26112 bytes
Date -0001-11-30
File details
MD5 5a6b1769e64d94855c0dcb0b0a9abd6e
SHA1 89295f83d3045fa2bd9b600bd386278b6cc80891
SHA256 31e94fb1540fe9de63bb2e24dbdc6553b97a2dc371a4b27e42fc30bb0f9f5d2e
CRC32 6fdd1415
Example file location C:\Windows\System32\
Filename cmpbk32.dll
System Windows Vista
File size 26112 bytes
Date -0001-11-30
File details
MD5 3709ec685e0076cb20743096c9c7e587
SHA1 789921ea77c0b1ae0cef73817cc10c168b758f85
SHA256 df6f8735bcee199aeacf43aad96a730170399dc3b1eb0b7e04ca6540b163395d
CRC32 c3d48e35
Example file location ---
Filename cmpbk32.dll
System Windows Vista
File size 28160 bytes
Date 2008-01-21
File details
MD5 665a712d0ee496ba86edd568c8b75f57
SHA1 82a581904847c629fc1b7e9e158bc411613e7726
SHA256 1a3a93f8057c7e2287730614836259ad2e1e7fd74b753609efb5bc5c45366b34
CRC32 1eefc8c1
Example file location ---
Filename cmpbk32.dll
System Windows XP
File size 14336 bytes
Date 2008-04-14
File details
MD5 45c8f5cc033b21088c8918eb26ef3e0e
SHA1 a0c68bc810b3ad7df254b9ea1e0c033d7da690df
SHA256 e3935a35f20a6c7cda60c72f9ef9d444f5e4000bdc4f3e7f1cc6ec2f27efe01a
CRC32 f010a9c2
Example file location ---