Hi @bering!
Let me get some additional information. Do you have any error messages in the kibana.log? Also, if the report diagnostic shows a problem with screen capture it might be related to how the kibana service is started. How are you starting the Kibana service on windows? If there are no useful error message in the Kibana log, we may need to also get some additional debug by doing env DEBUG="puppeteer:*" ./bin/kibana from the Puppeteer Debug Log section of the troubleshooting guide.
Thanks,
Liza