# Cannot open designer

**URL:** <https://forum.inductiveautomation.com/t/cannot-open-designer/20818>\
**Category:** General Discussion\
**Created:** [November 13, 2018, 9:05pm UTC](https://forum.inductiveautomation.com/t/cannot-open-designer/20818 "2018-11-13T21:05:59Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![juliorosales](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@juliorosales](https://forum.inductiveautomation.com/u/juliorosales)\
**Post date:** [November 13, 2018, 9:05pm UTC](https://forum.inductiveautomation.com/t/cannot-open-designer/20818/1 "2018-11-13T21:05:59Z")

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Any ideas why Designer is not opening? all of my clients are working but I cannot open designer, the Java windows comes up, but it goes away without opening designer… no errors. I am running Java V8

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [November 13, 2018, 9:10pm UTC](https://forum.inductiveautomation.com/t/cannot-open-designer/20818/2 "2018-11-13T21:10:27Z")

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Almost guaranteed to be a memory problem:

> [@Java Upgrade to 8.171 not working with Designer](http://forum.inductiveautomation.com/t/java-upgrade-to-8-171-not-working-with-designer/18035/2):
>
> You probably got 32 bit Java (Oracle loves to do that, for some reason) and your designer is set to launch with more than 1.5gB of RAM, so 32-bit java is unable to allocate it. You can check Configure → Gateway Settings and reduce the max designer memory, or check your installed Java architecture (if Windows, then just searching for “Java” should give you ‘Configure Java’, which will bring up the Java control panel and let you check architecture):

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**Author:** ![juliorosales](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@juliorosales](https://forum.inductiveautomation.com/u/juliorosales)\
**Post date:** [November 13, 2018, 9:20pm UTC](https://forum.inductiveautomation.com/t/cannot-open-designer/20818/3 "2018-11-13T21:20:15Z")

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Thank you! lowering my designer memory to a 1GB done the trick, Thanks again!