
Hi @Tolppa ,
Please check as following to for basic troubleshooting:
- Make sure Application Pools and sites are running properly via IIS.
- Check if admin component in search topology is up and running via Central Administration > Search Service Application.
- Make sure Search Service application related services are running via Services.msc. Stop and restart the services if necessary.
- Make sure your web application is properly associated the search service via Central Administration > Manage web applications > select the web app > Service Connections. Check if search service application is selected here.
You could also configure proxy server settings for Search in SharePoint Server.
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