server selection error: context deadline exceeded, current topology: { Type: Unknown, Servers: [{ Addr: localhost:27017, Type: Unknown }, ] } I get the above error when I try to save & test . I have a mongodb instance running on local and grafana-server local. I am on windows 11. I tried with mongodb://localhost , 127.0.0.1 , mongodb://127.0.0.1 in the Host textbox. Any ideas?