Why Can't SQL Server Management Studio Access The "My Documents" Folder in Windows 7?

I found more information here:

"To give your SQL Server account access to this folder, we first have to verify the account used to login to SQL Server. Open SQL Server Configuration Manager and navigate to SQL Server Services. Right-click SQL Server (MSSQLSERVER) and select properties. On the Log On tab, you should see where the account to login as is specified."

Once you know the account being used by SQL Server, give that account the needed permissions on your directory.

Try giving the "Network Service" permissions on the folder. Worked for me.