# CORS Problem at REST API

**URL:** <https://community.openhab.org/t/cors-problem-at-rest-api/3712>\
**Category:** Runtime\
**Tags:** rest, openhab2, cors\
**Created:** [October 27, 2015, 3:39pm UTC](https://community.openhab.org/t/cors-problem-at-rest-api/3712 "2015-10-27T15:39:41Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Kai](https://community.openhab.org/user_avatar/community.openhab.org/kai/32/116281_2.png) [@Kai](https://community.openhab.org/u/Kai)\
**Post date:** [October 28, 2015, 1:34pm UTC](https://community.openhab.org/t/cors-problem-at-rest-api/3712/8 "2015-10-28T13:34:08Z")

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> [@Stratehm](#):
>
> Is there some prerequisites or configuration to use the openHAB\_with\_ESH launcher ?

This launch config can only be used if you used “openHAB 2 with ESH” as an installation option in the Eclipse Installer and thus you have the ESH bundles as sources in your workspace.  
But for testing this, you do not need them in your workspace. Simply use the normal “openHAB Runtime” launch config and it all should start up.

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