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Windows 7: Win 7 Pro x64 PC can't see NAS; Win 7 Home x32, XP, iMac, Linux can ?

22 Dec 2011   #1
robardin

Windows 7 Professional x64
 
 
Win 7 Pro x64 PC can't see NAS; Win 7 Home x32, XP, iMac, Linux can ?

Hi there,

I have what is surely a Win 7 Pro security configuration "problem", but I can't figure out what it is. I've searched this very helpful forum for a day or so and have done things like changing the local security policy option for LAN Manager authentication to LM /NTLM with NTLMv2 "if negotiated", and so on, but still have no luck.

My home network has a NAS device, an HP MediaVault MV5150 to be precise, where I store all my documents, pictures, videos and music. I have the files on the NAS publicly shared so there is not supposed to be a need to enter a login/password to see them, basically if you're in my home network you should see the files there. It's assigned the workgroup name MSHOME, which was the default for some old version of Windows that I habitually use for my home network which is behind a router firewall anyway.

I have 7 PCs in my home, plus iPhones and whatnot, and they can all connect to the device either as a shared file system or as a media server. 3 computers are running Windows XP Pro, 3 others are running Windows 7 Home x32, and also one iMac. Oh, and one RedHat Linux system too, one of the XP laptops is a dual booter. On the non-Windows systems I had to configure seeing the NAS by IP address - 192.168.1.4 - but other than that, piece o' cake. In the Windows file browsers I can enter either "\\hpmediavault\documents" or "\\192.168.1.4\pictures", for example, to access the shared folders "documents" or "pictures" (or "music" or "videos"), map a network drive for each shared folder, and forget about it.

Of the 3 Win 7 PCs, one of them is a computer which I just did a completely clean installation on earlier this week, flattening a Win XP box with a Win 7 x32 home install in order to hand it off to my Dad. This PC is able to see my NAS right after installation. Yesterday, I got its replacement unit running, this one my first PC running Windows 7 Pro x64 with 8GB of RAM. I then ran the recommended updates and rebooted.

The first thing I noticed is that my login screen on bootup does not show the menu of configured logins with the mini-icons, as all my other Windows computers have, it has textbox prompts for login and password. So I can tell security defaults are different. (On a separate but much less urgent note, I did the local policies "Interactive logon: Do not require CTRL+ALT+DEL" change to "Enabled" but I still get presented with the text boxes on reboot.)

The second thing I noticed is that despite joining that MSHOME workgroup, I don't see my hpmediavault in my listing of Network devices. And even if I enter \\192.168.1.4\music, I can't connect to the files either. It does show up under "Media Devices" (this would be the uPnP server built-in to the MV5150 that my iPhone and Roku can stream from as well), but it doesn't talk to the device even as a media server.

This Win 7 Pro x64 box is definitely otherwise a good citizen of my home network though, it found my network printer and I can even login to the NAS device via HTTP to check its configuration and whatnot. It's just the file server and media server aspects that are closed off.


I have already checked and changed the following Local Policies / Security Options:

Network access: Let Everyone permissions apply to anonymous users = ENABLED
Network access: Allow anonymous SID/Name translation = ENABLED
Network access: Do not allow anonymous enumeration of SAM accounts and shares = DISABLED
Network access: Restrict anonymous access to Named Pipes and Shares = DISABLED

Network security: LAN Manager authentication level = Send LM & NTLM - use NTLMv2 session security if negotiated


Any suggestions on what I should look at and do next?


My System SpecsSystem Spec
.
22 Dec 2011   #2
robardin

Windows 7 Professional x64
 
 

BTW, I disabled my Windows Firewall on this PC to see if that had any effect - nope, file browsing to "\\192.168.1.4\documents" or somesuch still does not work.
My System SpecsSystem Spec
22 Dec 2011   #3
robardin

Windows 7 Professional x64
 
 

Some more things I've tried:

- Changing both NAS device and XP Pro x64 to workgroup WORKGROUP
- Disabling IPv6
- Enabling WINS / NetBIOS over TCP/IP in Advanced settings of network controller

No dice.

I installed and ran a virtual Windows XP machine in Win 7 Pro x64; interestingly, this virtual XP machine cannot access the workgroup WORKGROUP (as it is now called), giving an error "Workgroup is not accessible. You might not have permission to use this network resource", but if I enter "\\192.168.1.4" into the Explorer bar, I can see all the shared folders and files and map network drives.

So ... now what? I can transfer files to and from my NAS on my most awesome computer running Windows 7 x64 right now only via the virtual Windows XP session running on it! Muy estupido!
My System SpecsSystem Spec
.

22 Dec 2011   #4
robardin

Windows 7 Professional x64
 
 

OK, I gave up. This Windows 7 Pro x64 installation came with a pre-assembled custom barebones system I got online, and after 24 hours of fighting various quirks of its configuration, I just flattened the hard drive with a clean installation. And now everything works and looks the way I wanted it to. Go figure. All the computers are visible on the network, I can access the NAS from the workgroup or by IP address, and even things like Autoplay on inserting installation CD-ROMs and DVDs are happening where they hadn't been before.
My System SpecsSystem Spec
22 Dec 2011   #5
writhziden

Windows 7 Home Premium 64 Bit
 
 

Quote   Quote: Originally Posted by robardin View Post
OK, I gave up. This Windows 7 Pro x64 installation came with a pre-assembled custom barebones system I got online, and after 24 hours of fighting various quirks of its configuration, I just flattened the hard drive with a clean installation. And now everything works and looks the way I wanted it to. Go figure. All the computers are visible on the network, I can access the NAS from the workgroup or by IP address, and even things like Autoplay on inserting installation CD-ROMs and DVDs are happening where they hadn't been before.
Nice job troubleshooting it yourself. This is an issue that many people have buying computers with Windows already installed. The Sevenforums gurus often do a clean install as soon as they buy a pre-built computer for this reason. It gets rid of configuration changes and bloatware that likes to be added by vendors (probably not in your case with the bloatware, but you get my meaning).

Congrats on finding a fix, though. Well done!
My System SpecsSystem Spec
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 Win 7 Pro x64 PC can't see NAS; Win 7 Home x32, XP, iMac, Linux can ?




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