WAR File Extension

What is WAR file?

WAR (Java Web Archive) is an archive format similar to JAR. WAR files contain JAVA applications and server components that can be run on a server (such as Apache Tomcat). Besides classes (source code), an archive files can store additional resource to be run on the server, including website code. Sometimes client apps are also distributed as WAR files.

Uses of WAR files

A WAR files just like an archive can be unpacked to view the source code and other resources. Execution environment, however, requires the application to be in WAR format. Typically also additional server components mus be used in the process.

Programs which support WAR file extension

Below you will find an index of software programs that can be used to open WAR files divided into 3 categories according to system platform supported. Files with WAR extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

Updated: 10/21/2023

How to open file with WAR extension?

Being unable to open files with WAR extension can be have various origins. Fortunately, most common problems with WAR files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The following is a list of guidelines that will help you identify and solve file-related problems.

Step 1. Download and install WinRAR

Problems with opening and working with WAR files are most probably having to do with no proper software compatible with WAR files being present on your machine. This one is an easy one. Select WinRAR or one of the recommended programs (for example, ALZip, IZArc, WinZip) and download it from appropriate source and install on your system. Above you will find a complete listing of programs that support WAR files, classified according to system platforms for which they are available. One of the most risk-free method of downloading software is using links provided by official distributors. Visit WinRAR website and download the installer.

Step 2. Check the version of WinRAR and update if needed

You still cannot access WAR files although WinRAR is installed on your system? Make sure that the software is up to date. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. This can be one of the causes why WAR files are not compatible with WinRAR. The most recent version of WinRAR is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Set the default application to open WAR files to WinRAR

If the issue has not been solved in the previous step, you should associate WAR files with latest version of WinRAR you have installed on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Selecting the first-choice application in Windows

• Choose the Open with entry from the file menu accessed by right-mouse clicking on the WAR file
• Next, select the Choose another app option and then using More apps open the list of available applications
• Finally select Look for another app on this PC, point to the folder where WinRAR is installed, check the Always use this app to open WAR files box and conform your selection by clicking OK button

Selecting the first-choice application in Mac OS

• By clicking right mouse button on the selected WAR file open the file menu and choose Information
• Proceed to the Open with section. If its closed, click the title to access available options
• Select WinRAR and click Change for all...
• If you followed the previous steps a message should appear: This change will be applied to all files with WAR extension. Next, click the Continue button to finalize the process.

Step 4. Verify that the WAR is not faulty

Should the problem still occur after following steps 1-3, check if the WAR file is valid. Problems with opening the file may arise due to various reasons.

1. Check the WAR file for viruses or malware

If the WAR is indeed infected, it is possible that the malware is blocking it from opening. Scan the WAR file as well as your computer for malware or viruses. If the scanner detected that the WAR file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Verify that the WAR file’s structure is intact

Did you receive the WAR file in question from a different person? Ask him/her to send it one more time. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. It could happen the the download process of file with WAR extension was interrupted and the file data is defective. Download the file again from the same source.

3. Ensure that you have appropriate access rights

Some files require elevated access rights to open them. Log in using an administrative account and see If this solves the problem.

4. Verify that your device fulfills the requirements to be able to open WinRAR

If the systems has insufficient resources to open WAR files, try closing all currently running applications and try again.

5. Check if you have the latest updates to the operating system and drivers

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Java Web Archive file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle WAR files.

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