How to Download and Fix appidapi.dll?

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

appidapi.dll file Application Identity APIs Dll. 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 appidapi.dll related errors on your device. You can also download appidapi.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7 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

File info

General information
Filename appidapi.dll
File extension DLL
Description Application Identity APIs Dll
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 appidapi.dll file. appidapi.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 appidapi.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to appidapi.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 appidapi.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.

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

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

Go to the folder where the file should be located and paste the downloaded file. Below is the list of appidapi.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\

If the steps did not solve your appidapi.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 appidapi.dll
System Windows 10
File size 52760 bytes
Date 2017-03-18
File details
MD5 887d0afbed09eb101f3a05093b1711eb
SHA1 183bef5b27b57a9543a4205f45311d066f56aa40
SHA256 428eaaa48c5ad8978471b300b20d69936e0d9727295b68293f9f0885d120c97a
CRC32 958b2d3c
Example file location C:\Windows\System32\
Filename appidapi.dll
System Windows 8.1
File size 64552 bytes
Date 2014-11-21
File details
MD5 d10225bc237bf127cdfa13086bd37e7d
SHA1 79f5dfd9acbf63391793c1f8422e0db0600c2552
SHA256 b1823725845d7d438b8146b0326ef86da0021167d55efea78d7edb233652c0b5
CRC32 fa196ae5
Example file location C:\Windows\System32\
Filename appidapi.dll
System Windows 8
File size 63376 bytes
Date 2012-07-26
File details
MD5 9fb3ffd94dec0b435e8ac93b9c0b5dce
SHA1 4a52053797912b52fc1035a8c8e9b319bfb9bacf
SHA256 8f429f5ec11754b8c5884a8bf534ce9f07ae0a8aa74249921319030aed916b16
CRC32 c30744d6
Example file location 1: C:\Windows\System32\
Filename appidapi.dll
System Windows 7
File size 58368 bytes
Date 2009-07-14
File details
MD5 03811310ba9f7360a22c6d9b4aee21da
SHA1 e9bfb31e0fde5345eea31fecb5f7880a109d74c3
SHA256 e98d2026b683aac30dcac4cd980e56343df46fd92cc62267dc063d625cb2275a
CRC32 98fb2fad
Example file location C:\Windows\System32\
Filename appidapi.dll
System Windows 7
File size 50688 bytes
Date -0001-11-30
File details
MD5 ceaf33bdae752b7ea0c7be5f9d396636
SHA1 685c116e008e4aa6e15addfbc81d8a7e7eee3d0b
SHA256 7db648914965018d1192087bfe389f47f9a14a4e7c67bb9952266958c1210cb2
CRC32 3f39cc5a
Example file location C:\Windows\System32\