# Not able to launch GannttProject program on windows 11 pro

**URL:** <https://help.ganttproject.biz/t/not-able-to-launch-gannttproject-program-on-windows-11-pro/12133>\
**Category:** GanttProject Desktop Support\
**Created:** [May 29, 2025, 3:36am UTC](https://help.ganttproject.biz/t/not-able-to-launch-gannttproject-program-on-windows-11-pro/12133 "2025-05-29T03:36:40Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dinesh\_Sen](https://help.ganttproject.biz/user_avatar/help.ganttproject.biz/dinesh_sen/32/6714_2.png) [@Dinesh\_Sen](https://help.ganttproject.biz/u/Dinesh_Sen)\
**Post date:** [May 29, 2025, 3:36am UTC](https://help.ganttproject.biz/t/not-able-to-launch-gannttproject-program-on-windows-11-pro/12133/1 "2025-05-29T03:36:40Z")

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I am not able to launch the ganntt project app. I tried to launch is in admin mode, didn’t work.  
I have tried to reinstall it. didn’t work.  
I am on latest version ganttproject-3.3.3316 . windows version is 11 pro  
When I launch the program, simply nothing happens, no error, nothing. dead silence.

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**Author:** ![Ernest\_Berkhout](https://help.ganttproject.biz/user_avatar/help.ganttproject.biz/ernest_berkhout/32/7338_2.png) [@Ernest\_Berkhout](https://help.ganttproject.biz/u/Ernest_Berkhout)\
**Post date:** [June 18, 2025, 2:58pm UTC](https://help.ganttproject.biz/t/not-able-to-launch-gannttproject-program-on-windows-11-pro/12133/2 "2025-06-18T14:58:30Z")

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Same here. Uninstalled Java Runtime, installed the correct one. Nothing happening. Doesn’t even try to start. No error message, nothing.

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**Author:** ![DmitryBarashev](https://help.ganttproject.biz/user_avatar/help.ganttproject.biz/dmitrybarashev/32/406_2.png) [@DmitryBarashev](https://help.ganttproject.biz/u/DmitryBarashev)\
**Post date:** [June 18, 2025, 8:51pm UTC](https://help.ganttproject.biz/t/not-able-to-launch-gannttproject-program-on-windows-11-pro/12133/3 "2025-06-18T20:51:06Z")

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Please try running `ganttproject.bat` as shown in the attached video, and post the results.  
In this video, an incompatible Java Runtime was used first, and GanttProject did not start. After changing `JAVA_HOME` environment variable to the runtime that comes with GanttProject (it sits in `runtime` subfolder) it started successfully.