iReport wont start on Windows 7

 Hi Guys,

I am hoping somebody can help me. I have downloaded and installed iReport-4.6.0-windows-installer.exe from

When I try to launch the program, I get the spinner for about 2 seconds but nothing happens. I have uninstalled and reinstalled but to no avail.


Can somebody help me please?

gleniris3's picture
Joined: Jul 6 2012 - 4:29am
Last seen: 10 years 8 months ago

4 Answers:

 It could be a couple of things:

- not enough memory for iReport - you can configure how much memory the JVM for it uses by editing the ireport.conf file, which you can find under the etc directory. Edit the default_options parameter, and modify the -Xms and -Xmx values to something higher, like 1024m. The MaxPermSize could be lower too, maybe just 128m.

- Windows 7 - I also have a Windows 7 machine, it's 64-bit. I used to have problems with iReport too, until I changed the JDK. If your system is also 64-bit, I would suggest downloading JDK 1.7 (there's a specific 64-bit version), and modify the jdkhome variable in ireport.conf to point at JDK 1.7.

gdmoreno's picture
Joined: Oct 26 2010 - 3:23pm
Last seen: 2 years 2 months ago

 Thanks  gdmoreno.


Turns out that I needed to put the jdk/bin directory on my path.

gleniris3's picture
Joined: Jul 6 2012 - 4:29am
Last seen: 10 years 8 months ago

The person who added "-J" before all default options in ireport.conf should win a medal. The application just didn't want to open at all (no action and no error). Finally after almost 2h of fighting with different JVM settings managed to run iReports just by removing all "-J" from this file. Thanks...

tocio - 9 years 4 months ago

Thanks  gdmoreno?

I got this problem with ireport 5.5 with jdk 1.8 on windows 7 32 bit.

the problem as resolved by finstalling JDK 1.7 instead of 1.8

mcm's picture
Joined: Dec 13 2006 - 10:12pm
Last seen: 2 years 5 months ago

I had a problem with 

JAVA_HOME=C:\Program Files\Java\jdk1.7.0_80\

when I deleted last '\' is starts

alex.mazurok's picture
Joined: Oct 22 2015 - 11:12am
Last seen: 7 years 5 months ago