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Ashok Blog for SQL Learners and Beginners and Experts

Friday 14 February 2014

login failed for user Microsoft SQL Server, Error 4064

Error: 4064 – Cannot open user default database. Login failed. Login failed for user


Many users have received following error while connecting to the database. This error happens when database is dropped for which is default for some of the database user. When user try to login and their default database is dropped following error shows up.
Cannot open user default database. Login failed.
Login failed for user ‘UserName’. (Microsoft SQL Server, Error: 4064)
The fix for this problem is very simple.
Fix/Workaround/Solution:
First click on Option>> Button of “Connect to Server” Prompt.
Now change the connect to database to any existing database on your server like master or msdb.
Now click on connect and it will successfully log you in. Once you login in the system run following statement for your username and it should fix your problem. Make sure to replace [test] with your username and master with yourdatabase name.
ALTER LOGIN [test] WITH DEFAULT_DATABASE = master
GO

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