Hi Savan. Thanks for the reply.

Didn't work I'm afraid. My results:

Step 1: I tried this with the "Downloads" folder. Obviously I had to do it from one of the other machines - if I right click to access Properties on the laptop then I have the same error message as above ("\MyNAS\Share\Download is not accessible. You might not have permission to use this network resource. The specified network name is no longer available.") When try to do Point 10 I get the message "Unable to set new owner on Downloads. Access is Denied." Is this because the folders are on the NAS and therefore I can't change permissions using Windows? Note: I do not have any passwords set up for any user accounts - could this be causing a problem?

Step 2: I get the same error "\MyNAS\Share\Download is not accessible. You might not have permission to use this network resource. The specified network name is no longer available."

Step 3: Still get the same error.

As I said, the other 2 PCs can access all the folders fine, and EVERY computer has a clean install of Windows 7 on. The only difference is that the laptop connects wirelessly, and it is running Windows 7 32-bit, but the other computers are running 64-bit. Surely the problem must be related to one of these things? Before, when the laptop was running Windows XP 32-bit I had no problems.

More info: I have just checked, and if I connect the laptop via a wired connection (instead of wireless) then it works perfectly.

OK, weird: I created a test folder and put one file in it, and could access the folder fine via wireless on the laptop. I gradually increased the number of files in the folder, and at about 8/9 I receive the same error as before. Could it really be to do with the size of the folder I'm trying to access? Or perhaps related to resolving names across the wireless network?

Hello Olly_S,

Welcome to Microsoft answers forums for Windows Vista community!

Step 1:

Try giving full permissions to the folder and then try accessing it.

To set folder permission, refer the below steps:

1. Right-click the folder and select Properties.
2. Click on the Security tab.
3. Click Advanced in the lower right.
4. In the Advanced Security Settings window that pops up, click on the Owner tab.
5. Click Edit.
6. Click Other users or groups.
7. Click Advanced in the lower left corner.
8. Click Find Now.
9. Scroll through the results and double-click on your current user account.
10. Click OK to all of the remaining windows except the first Properties window.
11. Select your user account from the list up top and click Edit.
12. Select your user account from the list up top again and then in the pane below, check Full control under Allow, or as much control as you need.
13. You’ll get a security warning, click Yes.

Step 2:

1.       Open ‘My computer’.

2.       On the tool bar, click on ‘Map Network Drive’.

3.       Then under folder, enter your network drive’s name followed by the folder name.

For example, if your network drive name is ‘STORAGE-0B74’ and the folder name is ‘Public’,

you need to enter as \STORAGE-0B74\Public

Step 3:

Temporary disable Windows Firewall service

=========================

1. Click "Start", go to run, type "services.msc" (without quotation marks) in the open box and press Enter.

Note: If you are prompted for an administrator password or confirmation, type your password, or click Continue.

2. Right click the "Windows Firewall" service and choose Properties.
3. Click "Startup type" option and click "Disabled".
4. Click OK and share the printer again.

If the issue persists, please proceed to the next steps to verify service.

Verify Network settings

=========================

1. Click start and click Control Panel.
2. Double click Network and Sharing Center.
3. Select "Change advanced sharing settings" option in the right panel.
4. Please turn on "Network discovery" and "File and printer sharing".

Hope this information is useful.

Regards,

Savan – Microsoft Support.