# Unable to install node-red-node-arduino

**URL:** <https://discourse.nodered.org/t/unable-to-install-node-red-node-arduino/46257>\
**Category:** General\
**Created:** [26 May 2021 06:56 UTC](https://discourse.nodered.org/t/unable-to-install-node-red-node-arduino/46257 "2021-05-26T06:56:39Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [26 May 2021 09:20 UTC](https://discourse.nodered.org/t/unable-to-install-node-red-node-arduino/46257/3 "2021-05-26T09:20:48Z")

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Hi  
To add to what @hardillb is saying, you need to install build tools first. From an elevated command prompt...

```auto
npm install --global windows-build-tools

```

... Then try installing the modbus node again.

NOTE: it can take quite some time to install build tools and might appear frozen, please wait it out.

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_[View the full topic](https://discourse.nodered.org/t/unable-to-install-node-red-node-arduino/46257)._