# Cura doesn't run

**URL:** <https://forum.lulzbot.com/t/cura-doesnt-run/24270>\
**Category:** Software\
**Created:** [March 1, 2022, 7:13pm UTC](https://forum.lulzbot.com/t/cura-doesnt-run/24270 "2022-03-01T19:13:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![cmmodeler](https://avatars.discourse-cdn.com/v4/letter/c/b19c9b/32.png) [@cmmodeler](https://forum.lulzbot.com/u/cmmodeler)\
**Post date:** [March 1, 2022, 7:13pm UTC](https://forum.lulzbot.com/t/cura-doesnt-run/24270/1 "2022-03-01T19:13:26Z")

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I’ve been running Cura version 3.6.31 and earlier versions for years on my windows 10 computer. Suddenly it would not run anymore. I finally gave up and uninstalled it and re-installed it (I have repeated this process 4 times). Since the original installed version was working and suddenly stopped working, I suspect that something else is going on.

The Cura rocktopus window opens and runs to “loading interfaces” and then disappears. Nothing else ever appears. I looked in task manager and “Slicing engine for Cura” is a background process. Nothing else Cura related is running.

Does anyone have any ideas on how to get this to run?

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**Author:** ![cdsmith](https://avatars.discourse-cdn.com/v4/letter/c/22d042/32.png) [@cdsmith](https://forum.lulzbot.com/u/cdsmith)\
**Post date:** [March 3, 2022, 2:57am UTC](https://forum.lulzbot.com/t/cura-doesnt-run/24270/2 "2022-03-03T02:57:52Z")

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Could try deleting the cache directories. Follow the instructions on this page under “Upgrading? Clear Your Cache!”

> **[Cura LulzBot Edition Installation: Windows](https://www.lulzbot.com/learn/tutorials/cura-lulzbot-edition-installation-windows#cache)**
>
> Cura LulzBot Edition is a Free Software 3D printing solution offered through our code repositories. System requirements and the End User License Agreement can be found on LulzBot.com/Cura.

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**Author:** ![Jtec2](https://avatars.discourse-cdn.com/v4/letter/j/439d5e/32.png) [@Jtec2](https://forum.lulzbot.com/u/Jtec2)\
**Post date:** [March 3, 2022, 7:31pm UTC](https://forum.lulzbot.com/t/cura-doesnt-run/24270/3 "2022-03-03T19:31:30Z")

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Usually I run my dedicated win 10 laptop off-line so Microsoft doesn’t interrupt my prints with their update crap. One day Cura was running fine and then I made the mistake of going on-line.  
Cura would not start again. I tried everything. What I found out is Microsoft just wants you to upgrade to win 11. So any/all “non-approved” software stopped working. Although the upgrade was “free”, they take every opportunity to up-sell you. I am seriously looking at Linux distributions to get away from MS.

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**Author:** ![cmmodeler](https://avatars.discourse-cdn.com/v4/letter/c/b19c9b/32.png) [@cmmodeler](https://forum.lulzbot.com/u/cmmodeler)\
**Post date:** [March 3, 2022, 8:05pm UTC](https://forum.lulzbot.com/t/cura-doesnt-run/24270/4 "2022-03-03T20:05:45Z")

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I got it to finally run. I skimmed over the part of the instructions the say to clear Cura directories in %appdata% and %localappdata%. My bad.

BTW, the latest Cura LE version has changed from 3.6.31 to 3.6.33. I don’t know what changed.