Hello i get this error after i removed a virus from my computer and know i lost all my emails and contacts...

System.Data.SQLite.SQLiteException: The database file is locked
database is locked
at System.Data.SQLite.SQLite3.Step(SQLiteStatement stmt)
at System.Data.SQLite.SQLiteDataReader.NextResult()
at System.Data.SQLite.SQLiteDataReader…ctor(SQLiteCommand cmd, CommandBehavior behave)
at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.SQLite.SQLiteCommand.ExecuteNonQuery()
at System.Data.SQLite.SQLiteConnection.Open()
at DbRepair.DbTools.OpenConnection(String fileName)
at DbRepair.Form1.CheckCorruption()
at DbRepair.Form1.Check(Object state)

it has soemthing to do with the “user folder”\em client\ folder there is a bug or error in this folder

Have you checked your permissions on that folder? Right-click on it in Explorer, select Properties and then switch to the Security tab. Make sure you have both Read and Write permissions on it.