Well having upgraded my MacBook/MacPro to OS X 10.7 I did notice one thing immediately. I was unable to access my Windows shares on my NAS box (a ReadyNAS Duo by Netgear)

Annoyed, been as all my install apps I needed were on the NAS and my main laptop and desktop both run MacOS now….

I kept getting the error below…

I didn’t really know what was causing it – so I decided that I would do some digging – turns out Apple disabled a certain type of access to Windows shares – namely used on NAS boxes people use a home – due to a security issue (however this does not stop you connecting using this work around)…

You can begin to get round the issue by opening up the Connect to Server box in Finder (Apple + K) or as shown below:

Next your should be presented with a connection options screen – this will allow you to connect to the server you used to be able to before you installed OS X Lion.

Simply use the format of:

smb://SERVERNAME/SHARENAME

You can also add the connection to your favourites using the + button to the right of the text field…