Download and Fix authz.dll

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

authz.dll file Authorization Framework. 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 authz.dll related errors on your device. You can also download authz.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 authz.dll
File extension DLL
Description Authorization Framework
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 authz.dll file. authz.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 authz.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to authz.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 authz.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.

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

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of authz.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 authz.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 authz.dll
System Windows 10
File size 181760 bytes
Date 2017-03-18
File details
MD5 a6b30260e36992859b6e3ebb8e93ec91
SHA1 9a18499d04064b6ccdf2054fb7af50cee61c815d
SHA256 ee1eb8cb47765a7844ba23e1d563ad96a62c2e8d92c6fd7b6cf7092eee3feb22
CRC32 bc9afcc9
Example file location C:\Windows\System32\
Filename authz.dll
System Windows 8.1
File size 180224 bytes
Date 2014-11-21
File details
MD5 3ce579cedfae0b625b9075afe832404a
SHA1 766d137d1efed6c6c18bfb14c1c1185c46b2e427
SHA256 1e9edf6ec61ddcf4dc8755389e6a76f10eee35efce5c3b4aaf199499cd2ffb50
CRC32 33e9bbb5
Example file location C:\Windows\System32\
Filename authz.dll
System Windows 8
File size 168448 bytes
Date 2012-07-26
File details
MD5 5210ca05111419a7746581015c6842d3
SHA1 91622f4fa2963961aa4a12043e36209f370d64bd
SHA256 79072eed5a6f96825be71510eadb21e6ba912d64dcae4249a8a7ce08dd48a096
CRC32 d3bb1318
Example file location 1: C:\Windows\System32\
Filename authz.dll
System Windows 7
File size 177664 bytes
Date 2009-07-14
File details
MD5 7fbebd2229ea5fd48d41b199ec2d541c
SHA1 136a67112d0f3abce1f7c2716d9a7b863fe26cb1
SHA256 a465975d445a8d50caf3ef29bd33354b320d11173c127be30d5ebbff7008cdce
CRC32 6fd9b715
Example file location C:\Windows\System32\
Filename authz.dll
System Windows 7
File size 98816 bytes
Date -0001-11-30
File details
MD5 fb4eb9352b7d698e6b3c2aa2ed724dad
SHA1 dea035a827a67315bba4308ea8bc5695ce3acaaa
SHA256 534ab280acd29e88fd1bd8838e1231d9364e649c917547a838f51ec8ab941ee2
CRC32 0ecac846
Example file location C:\Windows\System32\
Filename authz.dll
System Windows Vista
File size 79872 bytes
Date -0001-11-30
File details
MD5 1ae011bb950a5e0b05023d2afec3666d
SHA1 ad19a0ca927b5c69f606e68e4e28b8c076b72ed0
SHA256 4602db22b7d1643780dbe7a34a4887c119a0516c65e4063a9c2074cf39a495dc
CRC32 2e98b554
Example file location ---
Filename authz.dll
System Windows Vista
File size 143360 bytes
Date 2009-04-11
File details
MD5 5ef9205e045643a5a75a82b116395b25
SHA1 bf9f4e7802c72ef92f5e0d51f7ec22af722a6928
SHA256 63e0a153bda7e688fa44efc585723bf857ed96d978052f02d47e2d408fc94aac
CRC32 c91c9fd9
Example file location ---
Filename authz.dll
System Windows XP
File size 62464 bytes
Date 2008-04-14
File details
MD5 714705f29a917993536a6ab2dedb0b7f
SHA1 36977fd1a696a3c3b974d2147d23425f7b0e6bec
SHA256 5c3ea97044a7af8027000dfa40901c0097ec935a7149c0a46aa2c6a2f9fd6cc1
CRC32 d36fb1a6
Example file location ---