Invalid or corrupt jarfile

Post Reply
adam.gritton
Posts: 1
Joined: 18 Nov 2015, 00:07

Hi,

I've downloaded the latest Essential Software jar (essentialinstall4_3_1.jar) and when attempting to run from Windows explorer or command line using java.exe I get the error "Invalid or corrupt jarfile". I followed the installation instructions and believe I have all necessary dependencies installed and have local admin privileges. Any suggestions?

Powershell output here:
PS C:\Users\Downloads> java -version
java version "1.8.0_66"
Java(TM) SE Runtime Environment (build 1.8.0_66-b18)
Java HotSpot(TM) 64-Bit Server VM (build 25.66-b18, mixed mode
PS C:\Users\Downloads> java -jar .\essentialinstal
Error: Invalid or corrupt jarfile .\essentialinstall4_3_1.jar

Regards,
Adam
User avatar
jonathan.carter
Posts: 1087
Joined: 04 Feb 2009, 15:44

Hi,

It may be worth re-downloading the JAR file. We have heard of some people who have had some kind of corruption of this file during the download.

It is an executable JAR, so you should be able to double-click on it to run it, as you already have a Java runtime installed.

We are aware of some issues with Java 1.8 and this version of the Essential toolset. It may help to 'downgrade' to Java 1.7 and try that with a re-downloaded Essential installer file.

Jonathan
Essential Project Team
Post Reply