# Strange Powershell related error

**URL:** <https://discourse.julialang.org/t/strange-powershell-related-error/23029>\
**Category:** General Usage\
**Created:** [April 11, 2019, 10:42am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029 "2019-04-11T10:42:30Z")\
**Posts on this page:** 15\
**Page:** 1

<div class="post-metadata">

**Author:** ![IljaK91](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iljak91/32/44301_2.png) [@IljaK91](https://discourse.julialang.org/u/IljaK91)\
**Post date:** [April 11, 2019, 10:42am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/1 "2019-04-11T10:42:31Z")

</div>

I am getting the following error when I start Atom with Juno installed:

```julia
We tried to start Julia with the `powershell` wrapper but could not find `powershell` or `where` on your 
 `PATH` . Please make sure `%SYSTEMROOT%\System32\WindowsPowerShell\v1.0` and  
`%SYSTEMROOT%\System32` are on your `PATH` and restart Juno.

```

Both are in my PATH. The Julia REPL works without problems. How can I fix this?

```julia
julia> versioninfo()
Julia Version 1.1.0
Commit 80516ca202 (2019-01-21 21:24 UTC)
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.1 (ORCJIT, broadwell)

(v1.1) pkg> status
    Status `C:\Users\Ilja\.julia\environments\v1.1\Project.toml`
  [c52e3926] Atom v0.8.4
  [6e4b80f9] BenchmarkTools v0.4.2
  [336ed68f] CSV v0.4.3
  [5d742f6a] CSVFiles v0.15.0
  [1375f997] CompEcon v0.4.0
  [8f4d0f93] Conda v1.2.0
  [a93c6f00] DataFrames v0.17.1
  [31a5f54b] Debugger v0.4.0
  [31c24e10] Distributions v0.17.0
  [d872a56f] ElectronDisplay v0.7.0
  [2fe49d83] Expectations v1.1.0
  [442a2c76] FastGaussQuadrature v0.3.3
  [f6369f11] ForwardDiff v0.10.3
  [38e38edf] GLM v1.1.1
  [c91e804a] Gadfly v1.0.1
  [7073ff75] IJulia v1.18.0
  [a98d9a8b] Interpolations v0.11.2
  [682c06a0] JSON v0.20.0
  [e5e0dc1b] Juno v0.7.0
  [b964fa9f] LaTeXStrings v1.0.3
  [ee78f7c6] Makie v0.9.3
  [2774e3e8] NLsolve v4.0.0
  [5fb14364] OhMyREPL v0.5.1
  [429524aa] Optim v0.18.1
  [9b87118b] PackageCompiler v0.6.3
  [d96e819e] Parameters v0.10.3
  [58dd65bb] Plotly v0.2.0
  [91a5bcdd] Plots v0.24.0
  [438e738f] PyCall v1.91.1
  [d330b81b] PyPlot v2.8.1
  [1fd47b50] QuadGK v2.0.3
  [fcd29c91] QuantEcon v0.15.0
  [295af30f] Revise v2.1.2
  [f2b01f46] Roots v0.8.0
  [90137ffa] StaticArrays v0.10.3
  [f3b207a7] StatsPlots v0.10.2
  [40c74d1a] TableView v0.2.0
  [37b6cedf] Traceur v0.3.0
  [37e2e46d] LinearAlgebra
  [9a3f8284] Random
  [10745b16] Statistics
  [8dfed614] Test

```

---

<div class="post-metadata">

**Author:** ![pfitzseb](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pfitzseb/32/45566_2.png) [@pfitzseb](https://discourse.julialang.org/u/pfitzseb)\
**Post date:** [April 11, 2019, 10:45am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/2 "2019-04-11T10:45:18Z")

</div>

Does `where powershell` work in a `cmd` prompt?

---

<div class="post-metadata">

**Author:** ![IljaK91](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iljak91/32/44301_2.png) [@IljaK91](https://discourse.julialang.org/u/IljaK91)\
**Post date:** [April 11, 2019, 10:46am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/3 "2019-04-11T10:46:54Z")

</div>

Nope, do you know why this can be the case and how I can fix this?

```julia
C:\Users\Username>where powershell
INFORMATION: Es konnten keine Dateien mit dem angegebenen
Muster gefunden werden.

```

---

<div class="post-metadata">

**Author:** ![pfitzseb](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pfitzseb/32/45566_2.png) [@pfitzseb](https://discourse.julialang.org/u/pfitzseb)\
**Post date:** [April 11, 2019, 10:48am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/4 "2019-04-11T10:48:15Z")

</div>

So if you’re certain that `C:\Windows\System32\WindowsPowerShell\v1.0` is on your `PATH` – is there a `powershell.exe` in there?

---

<div class="post-metadata">

**Author:** ![IljaK91](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iljak91/32/44301_2.png) [@IljaK91](https://discourse.julialang.org/u/IljaK91)\
**Post date:** [April 11, 2019, 10:50am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/5 "2019-04-11T10:50:06Z")

</div>

![grafik](https://global.discourse-cdn.com/julialang/original/3X/0/b/0bad0c1b2831a7bb70e29eaceed4fb3985a77bff.png)

And yes, there is a powershell.exe there

---

<div class="post-metadata">

**Author:** ![pfitzseb](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pfitzseb/32/45566_2.png) [@pfitzseb](https://discourse.julialang.org/u/pfitzseb)\
**Post date:** [April 11, 2019, 10:51am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/6 "2019-04-11T10:51:51Z")

</div>

![grafik](https://global.discourse-cdn.com/julialang/original/3X/4/a/4a55adbb82fa70d81c7516539761b84f54bfbd8e.png)

That path needs to be in a env variable called `Path` (or `PATH` or whatever, it seems to be case insensitive), not in one named `Powershell1` or anything else.

---

<div class="post-metadata">

**Author:** ![IljaK91](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iljak91/32/44301_2.png) [@IljaK91](https://discourse.julialang.org/u/IljaK91)\
**Post date:** [April 11, 2019, 10:53am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/7 "2019-04-11T10:53:48Z")

</div>

It is also there:

![grafik](https://global.discourse-cdn.com/julialang/original/3X/3/d/3de3f9f641526771a41128fd1c5b3c68cceca3e1.png)

---

<div class="post-metadata">

**Author:** ![IljaK91](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iljak91/32/44301_2.png) [@IljaK91](https://discourse.julialang.org/u/IljaK91)\
**Post date:** [April 11, 2019, 10:56am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/8 "2019-04-11T10:56:58Z")

</div>

If this information is any useful, Julia starts and works normally inside VSCode.

---

<div class="post-metadata">

**Author:** ![pfitzseb](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pfitzseb/32/45566_2.png) [@pfitzseb](https://discourse.julialang.org/u/pfitzseb)\
**Post date:** [April 11, 2019, 10:59am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/9 "2019-04-11T10:59:03Z")

</div>

Not really 🙂

Juno should work fine if you disable the powershell wrapper, I think, but it’d still be interesting to figure out why `where powershell` doesn’t work for you. Do any of the following work?

```julia
C:\Users\you>where powershell
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

C:\Users\you>where where
C:\Windows\System32\where.exe

C:\Users\you>where cmd
C:\Windows\System32\cmd.exe

```

---

<div class="post-metadata">

**Author:** ![IljaK91](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iljak91/32/44301_2.png) [@IljaK91](https://discourse.julialang.org/u/IljaK91)\
**Post date:** [April 11, 2019, 11:00am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/10 "2019-04-11T11:00:23Z")

</div>

Only where powershell does not work, the other two work as in your example.

---

<div class="post-metadata">

**Author:** ![pfitzseb](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pfitzseb/32/45566_2.png) [@pfitzseb](https://discourse.julialang.org/u/pfitzseb)\
**Post date:** [April 11, 2019, 11:10am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/11 "2019-04-11T11:10:35Z")

</div>

And can you execute `C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe`?

---

<div class="post-metadata">

**Author:** ![IljaK91](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iljak91/32/44301_2.png) [@IljaK91](https://discourse.julialang.org/u/IljaK91)\
**Post date:** [April 11, 2019, 11:41am UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/12 "2019-04-11T11:41:45Z")

</div>

Yes:

```julia
C:\Users\Username>C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
Windows PowerShell
Copyright (C) Microsoft Corporation. Alle Rechte vorbehalten.

PS C:\Users\Username>

```

---

<div class="post-metadata">

**Author:** ![IljaK91](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iljak91/32/44301_2.png) [@IljaK91](https://discourse.julialang.org/u/IljaK91)\
**Post date:** [April 11, 2019, 2:51pm UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/13 "2019-04-11T14:51:25Z")

</div>

I was able to get it working again by moving powershell.exe directly to C:\Windows\System32\

---

<div class="post-metadata">

**Author:** ![musm](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/musm/32/3675_2.png) [@musm](https://discourse.julialang.org/u/musm)\
**Post date:** [April 11, 2019, 3:25pm UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/14 "2019-04-11T15:25:29Z")

</div>

> [@pfitzseb](#):
>
> `where powershell`

Why is `where` being used to detect powershell location? It should always point to %SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe

---

<div class="post-metadata">

**Author:** ![IljaK91](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/iljak91/32/44301_2.png) [@IljaK91](https://discourse.julialang.org/u/IljaK91)\
**Post date:** [April 12, 2019, 1:15pm UTC](https://discourse.julialang.org/t/strange-powershell-related-error/23029/15 "2019-04-12T13:15:37Z")

</div>

Nevermind, for some reason “where powershell” works now as expected and Julia starts normally after updating Atom to 1.36 (probably unrelatedly).