when i was restore database in sql server 2012 this error happend
Msg 3241, Level 16, State 0, Line 3 The media family on device 'D:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\Backup\Test.bak' is incorrectly formed. SQL Server cannot process this media family. Msg 3013, Level 16, State 1, Line 3 RESTORE HEADERONLY is terminating abnormally.
what should i do?