Graylog Web unreachable after update to 4

[ttsandrew]

This is most likely caused by CORS not being enabled. It’s something quite a few people have encountered.

4.0 upgrade - Browser access failure with DNS name but IP works

Hmmm, the only thing that I’m seeing in my config is: #### Enable CORS headers for HTTP interface # # This is necessary for JS-clients accessing the server directly. # If these are disabled, modern browsers will not be able to retrieve resources from the server. # This is enabled by default. Uncomment the next line to disable it. http_enable_cors = true Maybe try that if it’s not presently enabled?