SSMS unable to read/find .bak files or .mdf or .ldf files

Problem:

I have a problem this morning, SQL Server.Bak,.ldf, .mdf files available when I see physically, but SSMS can't read this files from the navigation bar.


Solution:

"The reason it won't "open" the folder is that the service account running the SQL Server Engine service does not have read permission on the folder in question. Assign the windows user group for that SQL Server instance the rights to read and list contents at the WINDOWS level. Then you should see the files that you want to attach inside of the folder."

or else

Change SQL Server Service account to Local windows admin account, your problem will be solved.