I am getting the 404 error while trying to populate the schema from "Populate Solr Managed Schema".

Job started: Index_Update_Collection=sitecore_core_index|#Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> SolrNet.Exceptions.SolrConnectionException:

Error 404 Not Found
Problem accessing /solr/sitecore_core_index/schema. Reason: Not Found

I am using Sitecore 9.0 update 1 and Solr 6.6.2. Please let me know if I am missing any setting.

Thanks, Alok...

  • Is the schema.xml available on the solr server for the core sitecore_core_index? Commented May 1, 2018 at 7:12
  • This looks like a Solr issue. Check your Solr admin if the core sitecore_core_index exists or if there are any errors. Also try calling yoursolrserver:port/solr/sitecore_core_index/schema and see what it returns if you have access.
    – Mark Lowe
    Commented Oct 29, 2018 at 13:57

1 Answer 1


This may indicate that you have an index name specified in a patch config that doesn't exist in Solr. If it's a local install, try:

  1. Duplicating an existing core directory (ex. C:\Solr\solr-x.x.x\server\solr\some_index)
  2. Renaming the dir to the index name you're seeing in the logs
  3. Updating the name var in some_index\core.properties file to match the index name
  4. Restarting the Solr service
  5. Restarting IIS

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