# Can I safely install both Processing 4 and Processing 3.5.4?

**URL:** <https://discourse.processing.org/t/can-i-safely-install-both-processing-4-and-processing-3-5-4/31700>\
**Category:** Processing\
**Created:** [August 12, 2021, 4:38pm UTC](https://discourse.processing.org/t/can-i-safely-install-both-processing-4-and-processing-3-5-4/31700 "2021-08-12T16:38:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![PhilHaw](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/philhaw/32/8221_2.png) [@PhilHaw](https://discourse.processing.org/u/PhilHaw)\
**Post date:** [August 12, 2021, 4:38pm UTC](https://discourse.processing.org/t/can-i-safely-install-both-processing-4-and-processing-3-5-4/31700/1 "2021-08-12T16:38:06Z")

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Can Processing 4 and Processing 3.5.4 co-exist on the same PC (Windows 10)?

I know I should create a new sketchbook folder for Processing 4 to avoid making unwanted changes to older sketches but what about Java 11 versus Java 8? Do I need to worry that installing Processing 4 will break my Processing 3 installation?

Regards, Phil.

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**Author:** ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)\
**Post date:** [August 12, 2021, 5:16pm UTC](https://discourse.processing.org/t/can-i-safely-install-both-processing-4-and-processing-3-5-4/31700/2 "2021-08-12T17:16:53Z")

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Hello,

I have both installed.

On startup:

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/3/387cf641ae3bf24fc06735e4f4181422e2905786.png)

`:)`

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<div class="post-metadata">

**Author:** ![PhilHaw](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/philhaw/32/8221_2.png) [@PhilHaw](https://discourse.processing.org/u/PhilHaw)\
**Post date:** [August 12, 2021, 5:52pm UTC](https://discourse.processing.org/t/can-i-safely-install-both-processing-4-and-processing-3-5-4/31700/3 "2021-08-12T17:52:41Z")

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Thanks @glv . I guess I’m just being ultra cautious!

Phil.