# Latest **URL:** https://help.ganttproject.biz/latest.md?no_subcategories=false&page=1 [Latest](https://help.ganttproject.biz/latest.md) · [Categories](https://help.ganttproject.biz/categories.md) · [Tags](https://help.ganttproject.biz/tags.md) **Page:** 2 --- ## [From email: Shift Plan](https://help.ganttproject.biz/t/from-email-shift-plan/12351)
**Author:** [@DmitryBarashev](https://help.ganttproject.biz/u/DmitryBarashev)\ **Replies:** 1\ **Last updated:** [March 25, 2026, 2:00pm UTC](https://help.ganttproject.biz/t/from-email-shift-plan/12351 "2026-03-25T14:00:38Z")
this came by email Great work your planning tool i like much - best which i used so far. I could alredy to many friends recommend and they use it since this time. One question: Would it be a big work to make it possib… --- ## [Questionable Download and Install](https://help.ganttproject.biz/t/questionable-download-and-install/12345)
**Author:** [@MaxYaffe](https://help.ganttproject.biz/u/MaxYaffe)\ **Replies:** 1\ **Last updated:** [March 12, 2026, 6:39pm UTC](https://help.ganttproject.biz/t/questionable-download-and-install/12345 "2026-03-12T18:39:01Z")
I downloaded (and purchased) the latest update from ganttproject.biz., However my Antivirus trapped the install as suspicious. There have been problems with bad guys intercepting open-source software and replacing it w… --- ## [Erreur à l'ouverture de GP failed to launch the UI :](https://help.ganttproject.biz/t/erreur-a-louverture-de-gp-failed-to-launch-the-ui/12343)
**Author:** [@rosoli](https://help.ganttproject.biz/u/rosoli)\ **Replies:** 2\ **Last updated:** [March 10, 2026, 8:56pm UTC](https://help.ganttproject.biz/t/erreur-a-louverture-de-gp-failed-to-launch-the-ui/12343 "2026-03-10T20:56:16Z")
Bonjour, j’ai installé la version GP 3.3.3316 sur un windows 11 pro. Je suis admin de l’ensemble du répertoire GP. Pas de Java oracle installé localement. ou lancement de GP, j’ai l’erreur Failed to launch the UI : … --- ## [Cost management: planned vs actual (EV management)](https://help.ganttproject.biz/t/cost-management-planned-vs-actual-ev-management/4021)
**Author:** [@malcaraz](https://help.ganttproject.biz/u/malcaraz)\ **Replies:** 9\ **Last updated:** [March 6, 2026, 9:51am UTC](https://help.ganttproject.biz/t/cost-management-planned-vs-actual-ev-management/4021 "2026-03-06T09:51:07Z")
Does GP calculate actual cost, related to the progress of a task? To get the actual cost ¿is it as simple as TotalCost x %completeness? --- ## [(best practice) AI-driven analysis from a GP file](https://help.ganttproject.biz/t/best-practice-ai-driven-analysis-from-a-gp-file/12342)
**Author:** [@malcaraz](https://help.ganttproject.biz/u/malcaraz)\ **Replies:** 1\ **Last updated:** [March 6, 2026, 9:49am UTC](https://help.ganttproject.biz/t/best-practice-ai-driven-analysis-from-a-gp-file/12342 "2026-03-06T09:49:55Z")
Hello! If .gan file is exported as MPX / MSPDI Project Schedule file, the info might be parsed by -let’s say- Microsoft Copilot for analysis. I sent the prompt: “which data would be useful to be added to the previous fi… --- ## [How to show the time range (delay) allowed to an activity become critical on critical patch chart?](https://help.ganttproject.biz/t/how-to-show-the-time-range-delay-allowed-to-an-activity-become-critical-on-critical-patch-chart/3024)
**Author:** [@gabrielstockler](https://help.ganttproject.biz/u/gabrielstockler)\ **Replies:** 12\ **Last updated:** [March 4, 2026, 11:15am UTC](https://help.ganttproject.biz/t/how-to-show-the-time-range-delay-allowed-to-an-activity-become-critical-on-critical-patch-chart/3024 "2026-03-04T11:15:04Z")
How can I show the time range highlighted in red on a column or in the chart? Thanks!! Doubt|684x158 --- ## [Why aren't the dates displaying?](https://help.ganttproject.biz/t/why-arent-the-dates-displaying/12339)
**Author:** [@duffaut](https://help.ganttproject.biz/u/duffaut)\ **Replies:** 1\ **Last updated:** [February 22, 2026, 10:44pm UTC](https://help.ganttproject.biz/t/why-arent-the-dates-displaying/12339 "2026-02-22T22:44:46Z")
Bonjour, Why aren’t the dates displaying? Thanks for help --- ## [Unable to verify signature: Bad signature length when updating from 3.3.3316 to 3.3.3320](https://help.ganttproject.biz/t/unable-to-verify-signature-bad-signature-length-when-updating-from-3-3-3316-to-3-3-3320/12340)
**Author:** [@nicobat](https://help.ganttproject.biz/u/nicobat)\ **Replies:** 0\ **Last updated:** [February 22, 2026, 5:08am UTC](https://help.ganttproject.biz/t/unable-to-verify-signature-bad-signature-length-when-updating-from-3-3-3316-to-3-3-3320/12340 "2026-02-22T05:08:10Z")
Unofficial solve for this issue below, run at your own peril (very dramatic music plays :slight\_smile: ) I couldn’t find an example of this issue in the posts and I think it was originally caused by installing 3.3.3316 … --- ## [Issue with the GanttProject scale](https://help.ganttproject.biz/t/issue-with-the-ganttproject-scale/12337)
**Author:** [@DmitryBarashev](https://help.ganttproject.biz/u/DmitryBarashev)\ **Replies:** 1\ **Last updated:** [February 20, 2026, 11:00am UTC](https://help.ganttproject.biz/t/issue-with-the-ganttproject-scale/12337 "2026-02-20T11:00:35Z")
This came by email I have a problem with GanttProject scale. The scale is so small that I can’t find the settup putton where I could change the scale to larger. Is there any keyboard commands how I could change the scal… --- ## [Tagging or Grouping](https://help.ganttproject.biz/t/tagging-or-grouping/12336)
**Author:** [@Ben\_Rottersman](https://help.ganttproject.biz/u/Ben_Rottersman)\ **Replies:** 3\ **Last updated:** [February 19, 2026, 9:58pm UTC](https://help.ganttproject.biz/t/tagging-or-grouping/12336 "2026-02-19T21:58:29Z")
I am looking for a way to ID tasks beyond color or assignment. Is there a way to have a development team tag so I can sort by all development team tasks beyond indenting or coloring them? Thinking about a task that is cr… --- ## [Ganttproject slow and unresponsive](https://help.ganttproject.biz/t/ganttproject-slow-and-unresponsive/12333)
**Author:** [@user1](https://help.ganttproject.biz/u/user1)\ **Replies:** 3\ **Last updated:** [February 11, 2026, 7:35pm UTC](https://help.ganttproject.biz/t/ganttproject-slow-and-unresponsive/12333 "2026-02-11T19:35:32Z")
Hi, Just stared using ganttproject desktop (windows 11, i5, 8GM ram) these days and I’m experiencing some issues. It becomes sluggish when creating a new task. When I delete a task, another one gets deleted as well. In… --- ## [Linked task does not 'move' to predecessor end](https://help.ganttproject.biz/t/linked-task-does-not-move-to-predecessor-end/12327)
**Author:** [@freiheitsgrad](https://help.ganttproject.biz/u/freiheitsgrad)\ **Replies:** 7\ **Last updated:** [February 11, 2026, 9:19am UTC](https://help.ganttproject.biz/t/linked-task-does-not-move-to-predecessor-end/12327 "2026-02-11T09:19:01Z")
Hi, I’m using 3.3.3316. I’ve noticed that when creating a new task (task2) and linking it to the predesessor (task1) via end/begin (hard link), task2’s start date does not change but stays at its creation date (project s… --- ## [Task font illegibile / aliasing in 3.2.3240](https://help.ganttproject.biz/t/task-font-illegibile-aliasing-in-3-2-3240/4742)
**Author:** [@wpong3](https://help.ganttproject.biz/u/wpong3)\ **Replies:** 17\ **Last updated:** [February 10, 2026, 10:29pm UTC](https://help.ganttproject.biz/t/task-font-illegibile-aliasing-in-3-2-3240/4742 "2026-02-10T22:29:26Z")
Greets – I’ve just updated to 3.2.3240, and now I can’t read the task font very well on my external monitor (3840 x 2160). It seems to be aliasing severely. I’ve tried adjusting font in ganttproject settings, but it’s … --- ## [Main task periode not adjusted to sub tasks](https://help.ganttproject.biz/t/main-task-periode-not-adjusted-to-sub-tasks/12330)
**Author:** [@Pohlo](https://help.ganttproject.biz/u/Pohlo)\ **Replies:** 1\ **Last updated:** [February 10, 2026, 10:29pm UTC](https://help.ganttproject.biz/t/main-task-periode-not-adjusted-to-sub-tasks/12330 "2026-02-10T22:29:06Z")
Hello, why the period of the main task identified by a red arow in the attachement are longer that the sub task identified by a red rectangle and Indented to it? Regards Patrick --- ## [Double-clicking .gan files does not open GP](https://help.ganttproject.biz/t/double-clicking-gan-files-does-not-open-gp/11260)
**Author:** [@Thoric](https://help.ganttproject.biz/u/Thoric)\ **Replies:** 3\ **Last updated:** [February 2, 2026, 9:57pm UTC](https://help.ganttproject.biz/t/double-clicking-gan-files-does-not-open-gp/11260 "2026-02-02T21:57:14Z")
My Windows 10 File Explorer shows .gan files without an icon: But the .gan suffix is associated with GanttProject app: If I double-click the project file, nothing happens. If I open GanttProject first, then go to … --- ## [Exporting in PDF is impossible](https://help.ganttproject.biz/t/exporting-in-pdf-is-impossible/12326)
**Author:** [@DML](https://help.ganttproject.biz/u/DML)\ **Replies:** 1\ **Last updated:** [January 29, 2026, 5:36pm UTC](https://help.ganttproject.biz/t/exporting-in-pdf-is-impossible/12326 "2026-01-29T17:36:51Z")
Hie, since few weaks, exporting in PDF is impossible. I work with MacOs Sequoia and my Ganttproject version is 3.3.3311. When I export a file, I have a proposition on the PDF them: Sortavala (iText), but it doesn’t wo… --- ## [Export failure on macOS](https://help.ganttproject.biz/t/export-failure-on-macos/12314)
**Author:** [@duffaut](https://help.ganttproject.biz/u/duffaut)\ **Replies:** 4\ **Last updated:** [January 29, 2026, 5:09pm UTC](https://help.ganttproject.biz/t/export-failure-on-macos/12314 "2026-01-29T17:09:27Z")
Is a solution exist ? thanks --- ## [It keeps loading when i try to choose resources for my gantt cloud project](https://help.ganttproject.biz/t/it-keeps-loading-when-i-try-to-choose-resources-for-my-gantt-cloud-project/12324)
**Author:** [@insjohns](https://help.ganttproject.biz/u/insjohns)\ **Replies:** 0\ **Last updated:** [January 28, 2026, 3:56pm UTC](https://help.ganttproject.biz/t/it-keeps-loading-when-i-try-to-choose-resources-for-my-gantt-cloud-project/12324 "2026-01-28T15:56:15Z")
when i try to just add the project without choosing resources they cant access the document --- ## [Send an email on nearing task completion](https://help.ganttproject.biz/t/send-an-email-on-nearing-task-completion/12320)
**Author:** [@TonV](https://help.ganttproject.biz/u/TonV)\ **Replies:** 0\ **Last updated:** [January 27, 2026, 8:54am UTC](https://help.ganttproject.biz/t/send-an-email-on-nearing-task-completion/12320 "2026-01-27T08:54:23Z")
Hey, Is it possible to send an email when a task nears the ending date (e.g. 14 days before that). Regards TonV --- ## [Task Delays and Dependencies](https://help.ganttproject.biz/t/task-delays-and-dependencies/12319)
**Author:** [@DmitryBarashev](https://help.ganttproject.biz/u/DmitryBarashev)\ **Replies:** 4\ **Last updated:** [January 26, 2026, 1:28pm UTC](https://help.ganttproject.biz/t/task-delays-and-dependencies/12319 "2026-01-26T13:28:14Z")
This came by email I am writing with regard the capabilities of the software. When the tasks are linked to each other, and one of the task is delayed, I can easily add a delay in the Predecessors section. However, if… --- ## [Norwegian Holidays - 2026 to 2030](https://help.ganttproject.biz/t/norwegian-holidays-2026-to-2030/12316)
**Author:** [@EloTunk](https://help.ganttproject.biz/u/EloTunk)\ **Replies:** 1\ **Last updated:** [January 20, 2026, 10:44am UTC](https://help.ganttproject.biz/t/norwegian-holidays-2026-to-2030/12316 "2026-01-20T10:44:55Z")
Here are the holidays for Norway (from present until 2030), preformatted for use in a project, and hopefully a simple fix for developer to include in source calendar! :smiley: \ **Author:** [@DandyMuster](https://help.ganttproject.biz/u/DandyMuster)\ **Replies:** 12\ **Last updated:** [January 17, 2026, 12:13am UTC](https://help.ganttproject.biz/t/problems-starting-ganttproject-3-3-on-windows-10/12309 "2026-01-17T00:13:03Z") Latest version of 3.3 cannot launch through the exe shortcut on Windows 10. The ganttproject.exe and javaw.exe appear in Task Manager but no UI is visible. Using the .bat file works and here is the output: .\\ganttproje… --- ## [Hello, is it possible to change the scale of the Gantt chart timeline to hours? I need to plan tasks with hourly precision rather than daily. If this is not natively supported, is there a workaround?"](https://help.ganttproject.biz/t/hello-is-it-possible-to-change-the-scale-of-the-gantt-chart-timeline-to-hours-i-need-to-plan-tasks-with-hourly-precision-rather-than-daily-if-this-is-not-natively-supported-is-there-a-workaround/12311)
**Author:** [@Danijel\_Filipovic](https://help.ganttproject.biz/u/Danijel_Filipovic)\ **Replies:** 1\ **Last updated:** [January 8, 2026, 3:42pm UTC](https://help.ganttproject.biz/t/hello-is-it-possible-to-change-the-scale-of-the-gantt-chart-timeline-to-hours-i-need-to-plan-tasks-with-hourly-precision-rather-than-daily-if-this-is-not-natively-supported-is-there-a-workaround/12311 "2026-01-08T15:42:50Z")
Hello, is it possible to change the scale of the Gantt chart timeline to hours? I need to plan tasks with hourly precision rather than daily. If this is not natively supported, is there a workaround?" --- ## [Adding a button to toggle list of tasks into "threads"](https://help.ganttproject.biz/t/adding-a-button-to-toggle-list-of-tasks-into-threads/12262)
**Author:** [@tjyderrien](https://help.ganttproject.biz/u/tjyderrien)\ **Replies:** 3\ **Last updated:** [January 5, 2026, 1:24pm UTC](https://help.ganttproject.biz/t/adding-a-button-to-toggle-list-of-tasks-into-threads/12262 "2026-01-05T13:24:34Z")
Hi, Some feature that would be saving a LOT of time to me would be to have possibility to toggle the list of tasks into grouped tasks. This would enable to avoid reorganizing tasks all the time. We can find such featur… --- ## [Compatibility MacOS Monterey](https://help.ganttproject.biz/t/compatibility-macos-monterey/12306)
**Author:** [@amyrtn](https://help.ganttproject.biz/u/amyrtn)\ **Replies:** 1\ **Last updated:** [December 29, 2025, 4:46pm UTC](https://help.ganttproject.biz/t/compatibility-macos-monterey/12306 "2025-12-29T16:46:53Z")
Before downloading the version for Mac, I wanted to know if it was still compatible with macOS Monterey ? Thank you --- ## [Adding and displaying costs fixed and variable)](https://help.ganttproject.biz/t/adding-and-displaying-costs-fixed-and-variable/12295)
**Author:** [@David\_Unwin](https://help.ganttproject.biz/u/David_Unwin)\ **Replies:** 6\ **Last updated:** [December 17, 2025, 10:37am UTC](https://help.ganttproject.biz/t/adding-and-displaying-costs-fixed-and-variable/12295 "2025-12-17T10:37:30Z")
I see that you can add a rate (cost against a resource) in a task. Is it possible to add a fixed cost to a task (ie Materials) and show that in the Gantt chart? Then combine the resource cost and fixed cost? Kind regard… --- ## [Problème export pdf](https://help.ganttproject.biz/t/probleme-export-pdf/12298)
**Author:** [@Zak](https://help.ganttproject.biz/u/Zak)\ **Replies:** 1\ **Last updated:** [December 12, 2025, 7:56pm UTC](https://help.ganttproject.biz/t/probleme-export-pdf/12298 "2025-12-12T19:56:43Z")
Bonjour à tous. J’ai un problème pour exporter en pdf les fichiers. cela sort un fichier avec les bonnes dates mais sans les taches dans le temps. --- ## [Email verification fail](https://help.ganttproject.biz/t/email-verification-fail/12294)
**Author:** [@r.zeegers](https://help.ganttproject.biz/u/r.zeegers)\ **Replies:** 1\ **Last updated:** [December 11, 2025, 4:47pm UTC](https://help.ganttproject.biz/t/email-verification-fail/12294 "2025-12-11T16:47:15Z")
I don’t recieve email, also not in spam --- ## [Access - message 'creating access token' keeps running](https://help.ganttproject.biz/t/access-message-creating-access-token-keeps-running/12292)
**Author:** [@Helena\_Hertsens](https://help.ganttproject.biz/u/Helena_Hertsens)\ **Replies:** 1\ **Last updated:** [December 5, 2025, 9:35pm UTC](https://help.ganttproject.biz/t/access-message-creating-access-token-keeps-running/12292 "2025-12-05T21:35:24Z")
Hi, I have a cloud project where I invited several persons to join. Some people got Authentication Validity for 999 hours. Some people only have access ‘until GanttProject is closed’. If they indicate ‘custom period’ … --- ## [Export pdf with assigned colors](https://help.ganttproject.biz/t/export-pdf-with-assigned-colors/7006)
**Author:** [@Damia](https://help.ganttproject.biz/u/Damia)\ **Replies:** 11\ **Last updated:** [December 4, 2025, 12:24pm UTC](https://help.ganttproject.biz/t/export-pdf-with-assigned-colors/7006 "2025-12-04T12:24:14Z")
Hello, first of all, thank you for your support. I would like to ask a question about exporting the pdf. When I export the pdf, the colors assigned to each of the tasks do not appear, and when I am on the desktop gant … [Previous page](https://help.ganttproject.biz/latest.md?no_subcategories=false) [Next page](https://help.ganttproject.biz/latest.md?no_subcategories=false&page=2)