# Installation error message

**URL:** <https://discourse.nodered.org/t/installation-error-message/30558>\
**Category:** General\
**Created:** [22 July 2020 15:24 UTC](https://discourse.nodered.org/t/installation-error-message/30558 "2020-07-22T15:24:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![noclue](https://avatars.discourse-cdn.com/v4/letter/n/7feea3/32.png) [@noclue](https://discourse.nodered.org/u/noclue)\
**Post date:** [22 July 2020 15:24 UTC](https://discourse.nodered.org/t/installation-error-message/30558/1 "2020-07-22T15:24:25Z")

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88Hello--

What's going on here? I'm a newbie and have no idea how to fix this. I'm  
running Windows 7 and plan on experimenting with node-RED on a Raspberry Pi.

Thanks in advance for your help

* * *

Exception calling "DownloadString" with "1" argument(s): "The underlying connection was closed: An unexpected error occurred on a send."

At line:1 char:54

- iex ((New-Object System.Net.WebClient).DownloadString \<\<\<\< ('[https://chocolatey.org/install.ps1](https://chocolatey.org/install.ps1)')); choco upgrade -y python visualstudio2017-workload-vctools; Read-Host 'Type ENTER to exit'
  - CategoryInfo : NotSpecified: (🙂 , MethodInvocationException
  - FullyQualifiedErrorId : DotNetMethodException

The term 'choco' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.

At line:1 char:100

- iex ((New-Object System.Net.WebClient).DownloadString('[https://chocolatey.org](https://chocolatey.org)  
/install.ps1')); choco \<\<\<\< upgrade -y python visualstudio2017-workload-vctool  
s; Read-Host 'Type ENTER to exit'
  - CategoryInfo : ObjectNotFound: (choco:String) , CommandNotFoundException
  - FullyQualifiedErrorId : CommandNotFoundException

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<div class="post-metadata">

**Author:** ![knolleary](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/knolleary/32/3_2.png) [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Post date:** [22 July 2020 15:25 UTC](https://discourse.nodered.org/t/installation-error-message/30558/2 "2020-07-22T15:25:27Z")

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What command did you run to get these errors?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [20 September 2020 15:25 UTC](https://discourse.nodered.org/t/installation-error-message/30558/3 "2020-09-20T15:25:39Z")

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Closed on 20 September 2020 15:25 UTC

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