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In SQL Server, each user has a default database associated with the account. Whenever the user tries to log in without mentioning a database, the default database remains the active one. But, when the default database is not available, or the SQL Server does not find the database, then it gives an error message to showcase the problem.
Cannot open user default database. Login failed.
Login failed for user “RockySz.” (Microsoft SQL Server, Error: 4064)
SQL Server Error 4064
Here, the user ‘RockySz’ tries to log in to the SQL Server, but the Server does not find the default database and provides the error that it cannot open the default database, and the login is failed.
When the default database is not available during the connection, then it can be due to various reasons like the following:
There are two methods that you can use to rectify the error:
You can also run the T-SQL command to alter the default database of your SQL account. Follow the command:
You can follow any method from the above two and rectify the 4064 error. But, your default database can be inaccessible due to many other issues like MDF file corruption. That’s why you should try Kernel for SQL Database Recovery software to retrieve the information from the default database and save it to another database. This tool recovers all the SQL data from corrupt SQL databases and saves it to a live SQL Server or batch file with complete integrity. Moreover, it is a user-friendly tool that supports even the latest versions of SQL Server.
Kernel SQL Database Recovery is a unique software that can access the corrupt database files of SQL Server and recover them instantly. You do not need to manually identify the corruption in the SQL database as the tool can recover entire data from any kind of corruption. After recovering the file, you can save them to any database of any version of SQL Server. You can access the database file instantly after saving them to a live SQL Server. There is also an exclusive option to save data in an offline batch file at a safe location.