(The database is on my PC)
My database worked just fine for a month, and then this error came. It is not related to a specific file, nor a specific project (Even if I’ll create a new website and try to add a new database file, this error will pop)
I guess it happens because the sql server is not running on my PC, and it is true that I don’t see any sql related process running.
How the I fix it?
P.S. I know this error has a lot of threads on the internet and even here in SO. But most of them solve the problem for a complicated, secured connection with a remote server. All I want is to create a new empty ASP.NET website and add a new .mdf file for it on my PC.
It may be related with the SQL Service authentication which you have to verify from the control panel->Administrative tools->Services. Locate SQL Server(Express) Try changing the Log on As Network Service instead of local system.