Restoring SQL backup fails - Access is denied

The solution was to make sure that the database was created in the MSSQL11.MSSQLSERVER folder (as opposed to the MSSQL10_50.SQLEXPRESS folder). Then SSMS succeeded in 'restoring' the database.

I just got this error with SQLSERVER14 .All I did is just checking the "Relocate all files to folder" checkbox in files tab of the restoration wizard.

The database got restored successfully.

Faced the similar problem. windows security is preventing to Restore the DB to 'Target' location. Fixing security settings can resolve this issue.

Right click on the Target folder-> Properties -> Security -> Select appropriate user and then Edit the permissions ( I have given Full Access to the user). Hope this would fix the problem.