Troubleshoot cmifw.dll Errors and Download File

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

cmifw.dll file Windows Firewall rule configuration plug-in. 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 cmifw.dll related errors on your device. You can also download cmifw.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 cmifw.dll
File extension DLL
Description Windows Firewall rule configuration plug-in
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 cmifw.dll file. cmifw.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 cmifw.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to cmifw.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 cmifw.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.

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

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of cmifw.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: ---

If the steps did not solve your cmifw.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 cmifw.dll
System Windows 10
File size 87968 bytes
Date 2017-03-18
File details
MD5 4c89607d57840c4a9112475e73fea2ce
SHA1 2bcd35cfa387ca0d576686de9c777fe2476cc184
SHA256 81a2de25e5306ceac7b11384a29990542311c0aeb8a523adbdff4e195cb5eb8b
CRC32 25255597
Example file location C:\Windows\System32\
Filename cmifw.dll
System Windows 8.1
File size 80384 bytes
Date 2014-11-21
File details
MD5 ac1635ad6611f7b0c9f5149ea8ae339a
SHA1 ab19813951bcadc06f0254d60d817237226fdd89
SHA256 19c031630b46f18c7dea6a1ef65d279e904b6a926d203be790c172aad2a9f35e
CRC32 9bb89723
Example file location C:\Windows\System32\
Filename cmifw.dll
System Windows 8
File size 73728 bytes
Date 2012-07-26
File details
MD5 5f0d25bcdad40f03ada05d897b92236d
SHA1 b4f725ef003dada807c24547e2d40caad9336a51
SHA256 9787c603b7e7b41ffc00a7d53f382d97938ab3793f0b93229ab44359dceaf7ab
CRC32 9a10832f
Example file location 1: C:\Windows\System32\
Filename cmifw.dll
System Windows 7
File size 80384 bytes
Date 2009-07-14
File details
MD5 19664dc25010a7dc2fad6d7a9d1c907c
SHA1 d05bbd9fadeb6bb94a066d8d7859114a84bcbb8b
SHA256 44ce617dee77184dc3ed8695cc803d3726c392a499f25cd20563b40e8b8f48fd
CRC32 455d1ea5
Example file location C:\Windows\System32\
Filename cmifw.dll
System Windows 7
File size 68608 bytes
Date -0001-11-30
File details
MD5 24360655dced036dce54e9720d91133f
SHA1 da1939beba636a8fa77bfbcba2401c70ace64bde
SHA256 915782ec483d61961141c0bb3aa65de1697b0d7851ea648e92906168ac77a648
CRC32 70a27ef0
Example file location C:\Windows\System32\
Filename cmifw.dll
System Windows Vista
File size 80896 bytes
Date 2008-01-21
File details
MD5 a3468ded0825563ac6ef34a3e971a888
SHA1 16d3cebf930c1ed4c6bb257d357ff7575fb9124f
SHA256 eae694acf81cff85f5e7bfc23dee1c7629de90d66ca2ddfce010d5ec1dd36beb
CRC32 47c97e21
Example file location ---
Filename cmifw.dll
System Windows Vista
File size 67584 bytes
Date -0001-11-30
File details
MD5 d59374aa78a8addb0eeef800c40d0bd8
SHA1 4763cd51e64137a696453533578d53ab4ad63a98
SHA256 91b09de3ac063fef8075ddfe2b022c8b83abd4649b8e4bdc85f8855141b064f0
CRC32 e4157a76
Example file location ---