AppConstants.js Informations - Download and Fix

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

AppConstants.js file JavaScript. The file was developed by Microsoft for use with Windows software. Here you will find detailed information about the file and instructions how to proceed in the event of AppConstants.js related errors on your device. You can also download AppConstants.js file compatible with Windows 8.1, Windows 8 devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 8.1, Windows 8

User popularity

Fix AppConstants.js errors

1 Information about AppConstants.js file
2 Errors related to AppConstants.js file
3 How to fix AppConstants.js related errors?

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download AppConstants.js

4.1 List of AppConstants.js file versions

File info

General information
Filename	AppConstants.js
File extension	JS
Type	Script
Description	JavaScript

Software
Program	Windows 8.1
Software	Windows
Author	Microsoft
Software version	8.1

Details
File size	19622
Oldest file	2012-07-26
Latest file	2014-11-21

Most common AppConstants.js file related problems

There are various types of errors related to AppConstants.js file. AppConstants.js 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 AppConstants.js file. If you encounter one listed below (or similar), please consider the following suggestions.

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

AppConstants.js

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

Problems related to AppConstants.js 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 AppConstants.js 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.

How to fix AppConstants.js errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

AppConstants.js 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

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with AppConstants.js 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.

Installing relevant Microsoft Windows patches and updates may solve your problems related to AppConstants.js file. Use dedicated Windows tool to perform the update.

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
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 AppConstants.js 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 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 AppConstants.js file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the AppConstants.js file with properly working version. To use the tool:

Go to the Windows "Start" menu
Type "cmd" in the search field
Locate "Command Prompt" result – don't run it yet:
Click the right mouse button and select "Run as Administrator" option
Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Another approach is to restore system to previous state, before the AppConstants.js file error occured. In order to restore your system, follow the instructions below

Go to the Windows "Start" menu
Type "System Restore" in the search field
Start the system restore tool – it's name may differ depending on version of the system
The application will guide you through the process – read the messages carefully
After the process has finished, restart your computer.

If all the above-mentioned methods failed and the AppConstants.js 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 AppConstants.js file

The last solution is to manually download and replace AppConstants.js 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 AppConstants.js file.

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

Windows 8.1: C:\Program Files\WindowsApps\Microsoft.BingHealthAndFitness_3.0.4.212_x86__8wekyb3d8bbwe\shared\js\
Windows 8: 1: C:\Program Files\WindowsApps\Microsoft.BingHealthAndFitness_3.0.4.212_x86__8wekyb3d8bbwe\shared\js\

If the steps did not solve your AppConstants.js 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 AppConstants.js

System Windows 8.1

File size 19622 bytes

Date 2014-11-21

Download

File details
	MD5	e774a89a5a311257613d35c2d15ff0ae
	SHA1	a6a64a836c5a78487087cc55776c86f6307c3003
	SHA256	76a4f5e630a4552694f4346749104d98894bd7eee4894ae81b2d055ee568fba6
	CRC32	b557c57a
	Example file location	C:\Program Files\WindowsApps\Microsoft.BingHealthAndFitness_3.0.4.212_x86__8wekyb3d8bbwe\shared\js\

Filename AppConstants.js

System Windows 8

File size 11999 bytes

Date 2012-07-26

Download

File details
	MD5	7ecd06341b261ef5153858039495cbbf
	SHA1	1ee0e5486b772df586a07958b680be08464395d4
	SHA256	00386526d32b705c80c57de8edd8f329ea68e3601c04406afa8dd7f35dcb26c3
	CRC32	7f6c69dc
	Example file location	1: C:\Program Files\WindowsApps\Microsoft.BingHealthAndFitness_3.0.4.212_x86__8wekyb3d8bbwe\shared\js\