Newly created JSS app when started in the disconnected mode as below, tries to consume layout service and fails to load the page

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what could be causing this. tried creating fresh app multiple times, but the same issue occurs.

tried another fresh app this morning below is the error.

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  • Please check your JSS version and Sitecore compatibility. Also, its not required but can you try setting up the API KEY , follow the jss docs for information on that.
    – Abhay Dhar
    Oct 21, 2019 at 7:46
  • @AbhayDhar - i just want to run the app in disconnected mode for now. I believe Sitecore is not required to run app in disconnected mode.
    – nari447
    Oct 21, 2019 at 8:22
  • what is your jss version ?
    – Abhay Dhar
    Oct 21, 2019 at 9:25
  • it is version 12.0.0
    – nari447
    Oct 22, 2019 at 6:09
  • for the second screenshot , please check if any errors are there during app creation. This looks like if you are behind corporate proxy/firewall , you need to set up npm with proxy and username/pswd information
    – Abhay Dhar
    Oct 22, 2019 at 6:40

1 Answer 1


From the first error screenshot, issue is more look like of the firewall or port related issue.

JSS is somehow unable to connect on localhost:3042 which is a proxy server (act as Sitecore server in disconnected mode). Please check if this port is already in use or whether any firewall rules are getting applied.

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