mongo enters error

Problem: In cmd, an error is reported when the command mongo is entered

couldn't connect to server 127.0.0.1:27017

It should be the reason that the service is not started, open the service, and did not find the service MongoDB

Workaround

Or in cmd, enter the following two commands

(1) Delete service

sc delete MongoDB

(2) Create a service, pay attention to where it is created

sc create MongoDB binPath= “C:\Program Files\MongoDB\Server\4.0\bin\mongod.exe --service --config=D:\mongodb\mongo.config”

Finally open the service, start the service

Enter againmongo, successful