Device activation error, physical filename may be incorrect

Error Tip:

Device activation error. The physical filename ' e:/databasefiles/app.mdf ' may be incorrect.
File ' App_Data ' cannot be restored to ' e:/databasefiles/app.mdf '. Use the WITH MOVE option to identify a valid location for the file.
Device activation error. The physical file name ' E:/databasefiles/app.mdf ' may be incorrect.
The file ' App_log ' cannot be restored to the name ' E:/databasefiles/app.log '. Use the WITH MOVE option to identify a valid location for the file.
The RESTORE DATABASE operation terminated abnormally.

A similar error was encountered while restoring the database.

Quite simply, it is obvious that the destination directory error (because of the path to the data stored before the backup may not have this directory on restore). Choose a directory to store the database files you want to restore, or create a good directory by that destination address to restore smoothly.