Server Error in '/' Application

Server Error in '/' Application.

Cannot connect to the configuration database. 

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: Microsoft.SharePoint.WebPartPages.WebPartPageUserException: Cannot connect to the configuration database.

Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Solution: Ensure to follow the below to get rid of the error.

1.   Ensure that the SQL services are up and running.

2.   Ensure that the SQL services configured with the correct credentials.

3.   Ensure that the Farm account has below roles in DB server.

·        DB creator

·        Security admin

 

I hope the above information will help you to resolve the issue, in case of any queries/questions regarding the above mentioned information then please let me know. I would be more than happy to help you as well as resolves your issues, Thank you.