# Core won't connect, and the usual restore/reset methods aren't working

**URL:** <https://community.particle.io/t/core-wont-connect-and-the-usual-restore-reset-methods-arent-working/2323>\
**Category:** Troubleshooting\
**Created:** [January 24, 2014, 1:11am UTC](https://community.particle.io/t/core-wont-connect-and-the-usual-restore-reset-methods-arent-working/2323 "2014-01-24T01:11:17Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\
**Post date:** [March 26, 2014, 3:14am UTC](https://community.particle.io/t/core-wont-connect-and-the-usual-restore-reset-methods-arent-working/2323/20 "2014-03-26T03:14:19Z")

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Hmm try using sudo to install spark-cli or see this:

> **[I have trouble with spark-cli](https://community.particle.io/t/i-have-trouble-with-spark-cli/3447/8)**
>
> There’s a solution for npm on Mac in general. sudo npm config set registry http://registry.npmjs.org/ chown \[username\] .npm Anyone interested to debug more and solve the issue can try http://stackoverflow.com/a/22207869 I worked...

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