Used below commands but all gave same error 
mongo “mongodb+srv://sandbox.1ytl4.mongodb.net/” --username m001-student
mongo “mongodb+srv://sandbox.1ytl4.mongodb.net/admin” --username m001-student
mongo “mongodb+srv://sandbox.1ytl4.mongodb.net/test” --username m001-student
After you press enter it will prompt you for the password.
Then type in the password. And hit enter again.
Yes, I did the same and entered pwd “m001-student”
Oops. Double check the uri string is correct, and try a couple of times.
Let us know if it still cause issues.
Hi @Avnish_Kumar,
The password is m001-mongodb-basics
I was able to connect to your cluster using this connection string 
mongo "mongodb+srv://sandbox.1ytl4.mongodb.net/admin" --username m001-student -p m001-mongodb-basics
Let us know if you are still facing any issue.
~ Shubham
