# Can I have two different Julia versions simultaneously?

**URL:** <https://discourse.julialang.org/t/can-i-have-two-different-julia-versions-simultaneously/17988>\
**Category:** New to Julia\
**Created:** [November 25, 2018, 6:40pm UTC](https://discourse.julialang.org/t/can-i-have-two-different-julia-versions-simultaneously/17988 "2018-11-25T18:40:48Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Juan](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/juan/32/7657_2.png) [@Juan](https://discourse.julialang.org/u/Juan)\
**Post date:** [November 25, 2018, 6:40pm UTC](https://discourse.julialang.org/t/can-i-have-two-different-julia-versions-simultaneously/17988/1 "2018-11-25T18:40:49Z")

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I’m using Julia v1.0 on Windows and want to use also v1.1 too, and maybe v0.7 to test which one works better (with different versions of Visual Code or Jupyter)

Is it safe to do it?  
Or when I change settings or install packages on any of them it could produce errors on the other one?

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**Author:** ![PetrKryslUCSD](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/petrkryslucsd/32/215825_2.png) [@PetrKryslUCSD](https://discourse.julialang.org/u/PetrKryslUCSD)\
**Post date:** [November 25, 2018, 6:42pm UTC](https://discourse.julialang.org/t/can-i-have-two-different-julia-versions-simultaneously/17988/2 "2018-11-25T18:42:51Z")

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They are totally separate AFAICT. I do it all the time.

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**Author:** ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Post date:** [November 25, 2018, 7:25pm UTC](https://discourse.julialang.org/t/can-i-have-two-different-julia-versions-simultaneously/17988/3 "2018-11-25T19:25:01Z")

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julia-repl in Emacs even has support for [switching between executables](https://github.com/tpapp/julia-repl#buffer-local-inferior-repl-and-julia-executable) (`C-c C-v`) and multiple instances for each (`C-c C-s`).

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**Author:** ![roi.holtzman](https://avatars.discourse-cdn.com/v4/letter/r/f05b48/32.png) [@roi.holtzman](https://discourse.julialang.org/u/roi.holtzman)\
**Post date:** [March 13, 2020, 1:28pm UTC](https://discourse.julialang.org/t/can-i-have-two-different-julia-versions-simultaneously/17988/4 "2020-03-13T13:28:58Z")

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Can the two versions of Julia be run on the same computer even for the old version 0.6.4?  
I read somewhere that maybe below 0.7 is a problem. I have now julia 1.3, and 1.1 and all is ok. Can I safely install 0.6.4?

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**Author:** ![carstenbauer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/carstenbauer/32/4981_2.png) [@carstenbauer](https://discourse.julialang.org/u/carstenbauer)\
**Post date:** [March 13, 2020, 2:31pm UTC](https://discourse.julialang.org/t/can-i-have-two-different-julia-versions-simultaneously/17988/5 "2020-03-13T14:31:46Z")

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Yes, you can.