Unable to launch Studio console. Error Id: XDDS:3680CBC1
"Failed to Validate the Central Configuration Service location. Valid Delivery Controller services were not found at the specific location. Reason: Database Stopped". 

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Check and correct the database connection strings

1. On the Delivery Controller, open the PowerShell.
2. Run the command "Get-Command Get-*DBConnection |select Name" to get all Database connection string commands.
3. Execute all the commands we got in step 2 one by one
4. Confirm  the database server hostname is valid for all the Services
5. Verify that the database server is running and reachable from Delivery Controller
6. If connection string is not valid, Nullify the connection string and reset it.

Connection String example  : 

For the standalone SQL Server connection string:
        "Server=<SQL Server Name or FQDN>;Initial Catalog=<Site Database Name>;Integrated Security=True"

For the database Mirroring connection string:
        "Server=<Primary SQL Server Name or FQDN>; Initial Catalog=<Site Database Name>;Integrated Security=True; Failover Partner=<Secondary SQL Server Name or FQDN>"

For Always on High Availability connection string:
        "Server=<Listener Name or FQDN>; Initial Catalog=<Site Database Name>;Integrated Security=True; MultiSubnetFailover=True"

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Problem Cause

Database connection strings not set properly

Update strings manually