AppxSip.dll - Repair Issues and Download

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

AppxSip.dll file Appx Subject Interface Package. 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 AppxSip.dll related errors on your device. You can also download AppxSip.dll file compatible with Windows 10, Windows 8.1, Windows 8 devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8

File info

General information
Filename AppxSip.dll
File extension DLL
Description Appx Subject Interface Package
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 AppxSip.dll file. AppxSip.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 AppxSip.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

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



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


Problems related to AppxSip.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 AppxSip.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.

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

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

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

  • Windows 10: C:\Windows\System32\
  • Windows 8.1: C:\Windows\System32\
  • Windows 8: 1: C:\Windows\System32\

If the steps did not solve your AppxSip.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 AppxSip.dll
System Windows 10
File size 156160 bytes
Date 2017-03-18
File details
MD5 5ed4d9c3f98d37fd8e268465c3284498
SHA1 5037d2c5ebc37fb94b077596a6e735776e251d13
SHA256 c072d915cce0f110de5fe17187c2d53a07ae2d959aefdf4f1f4fecb7ce503946
CRC32 82741b6e
Example file location C:\Windows\System32\
Filename AppxSip.dll
System Windows 8.1
File size 98304 bytes
Date 2014-11-21
File details
MD5 4183a5d2c84106b6de1d8646a0cf6cf8
SHA1 a72d396869a3341a29e89f4e74fd152b9094d0c6
SHA256 ac1d8f69030930d0573fa850e262f811bce4f54b570908966730380a076d15e4
CRC32 dd2f2d66
Example file location C:\Windows\System32\
Filename AppxSip.dll
System Windows 8
File size 99328 bytes
Date 2012-07-26
File details
MD5 947c9bc7d8a590d16d4b5b591576ea7a
SHA1 95d09cc9d15ff0befe58f9e727309ce73081b9e0
SHA256 c5eef0db9f2c6993ab04eaad8abbf29f3010bf5bc6ca75f9e34a8e1f8ce52234
CRC32 13730f93
Example file location 1: C:\Windows\System32\