Question

I am using sql server 2008 R2. There is a login with

Username:dev Password:***

This was working fine from last 10 days but I dont know why suddenly it stopped working and showing an error message when trying to login :

TITLE: Connect to Server
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Cannot connect to ASHI-PC\SQLEXPRESS.
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ADDITIONAL INFORMATION:
Login failed for user 'dev'. (Microsoft SQL Server, Error: 18456)

Please help me. I have set the TCP port 1433 by using sql server configuration manager but thats also not working, I have checked my firewall and it is disabled, I have checked the sql browser it is in running mode I have restarted it but not getting the solution.

Answer 1

problem resolved by connect the db using windows authentication and after that

rightclick>select restart
also check that it is in running mode in configuration manager and click on stop and then again start .
in my case it helped me .