I am experiencing an issue where Katalon Studio closes unexpectedly.
Environment:
Katalon Studio Version: [11.01-c18d9b9865]
Operating System: [Windows]
Issue:
Katalon Studio closes automatically, but I am not sure of the exact steps that trigger the issue. It happens intermittently while I am working on my project.
Observations:
No clear error message is displayed before Katalon closes.
I have not identified a specific test case or action that consistently reproduces the problem.
Could you please advise:
Which log files should I check?
How can I identify the root cause?
Are there any known issues that could cause Katalon Studio to close unexpectedly?
check the .log file in your Katalon workspace directory first. That is the Eclipse platform log and usually captures JVM crashes or OOM errors that force the shutdown. Also look at config.log in the same location for startup and configuration issues.
if those logs are empty or unhelpful, check Windows Event Viewer under Windows Logs > Application. Look for entries from katalon.exe or Java runtime crashes around the time of the unexpected close. A hs_err_pid*.log file may also appear in your Katalon installation directory or project root if the JVM itself crashed, which points to a native crash rather than an application-level error.
the most common cause on Windows is running out of heap space, especially on large projects. Try increasing the max heap in Window > Preferences > Katalon > Memory Settings. If you are on a 32-bit JVM or have limited RAM, capping it at around 2048m to 4096m is a reasonable start. Also make sure you are on the latest patch of 11.x, as there have been stability fixes since the initial 11.0 release.
Don’t use this version.
I had talk with Thi ( Katalon developer) and she said that this version had issue, which the team has resolved in further version.
Since the shutdown happens without a clear error and you cannot reproduce it consistently, I would start by checking the Katalon logs in the workspace directory and the Windows Event Viewer at the exact time Katalon closes. Those are usually the best sources for identifying whether the application crashed, ran out of memory, or was terminated by another process.
A few things worth checking:
Available RAM and CPU usage when the issue occurs.
Any antivirus or security software that might be interfering with Katalon.
Third-party plugins recently installed or updated.
The Java version bundled with Katalon and whether there are any JVM-related errors in the logs.
Since you are using 11.0.1, I would also test with the latest available version if possible. If you can collect the .log file and any Windows crash entries, that should provide much more insight into the root cause than the symptoms alone.
My version KSE 11.1.3 on Windows crashed twice yesterday for some reason - no warning, just closed. Nothing appeared in Event Viewer. I’ll keep an eye on things and raise a ticket if this repeats. This machine has 64GB Ram so I’d be surprised if that was the reason! I’ve not long upgraded from 10.x (which had never crashed in this manner)