I know there has been some talk on this forum about this issue but, non of the answers I've found has helped to solve the problem I, and many other people, seem to be facing.I'm running the RC of Windows 7 on a Dell Inspiron 9300 Notebook which is connected to my network via it's Broadcomm 440x 10/100 NIC (Wired) directly to my LinkSys Router. Also connected directly to this is an Addonics NAS device with a Maxtor 320Gb HDD attached via the NAS's USB port. See this URL for more info on the NAS Adaptor; http://www.addonics.com/products/nas/nasu2.aspI have several User Accounts setup on the NAS device, all of which require a Username & Password combination to access the folders on the HDD. I have no problemsaccessing the folders and files on the NAS device, via the LAN on my Win Vista SP2 system, or my Win XP Pro SP3 System or a Win 2000 Pro Virtual Machine. When you open the NAS device from the Network Browser they all prompt for a Username and Password and then open the folders in Windows Explorer without any problem. It's only on the Win 7 system that this fails. The Username & Password Prompt comes up but every time it gives the Unknown Username / Bad Password Error message. In that error dialog it always prepends the Username with the machine name, eg. 'bilbo-win7\pqsanet' eventhough I only entered the UserName 'pqsanet'. I've even tried prepending the Host Name for the NAS device in the Username field, eg. 'n-15-nas01\pqsanet', but this still fails to allow me to log on!This Addonics NAS is only a couple of months old and has the latest Firmware installed from Addonics. It apparently uses some form of stripped down Linux as it's OS and therefore uses an SMB Server protocol to share the folders and files on the attached HDD. I've seen several posts suggesting creating a shortcut to the 'root' folder of the NAS, but that still fails as I'm not able to get authenticated to the NAS device.Thanks in advance for any suggestions or explanations of what is going on. I had 1st seen this problem with the Beta version of Windows 7 and assumed it was some sort of bug in the system that would be sorted out in the RC and RTM versions, but since I installed the RC version and I'm still having this issue I'm rather concerned that this issue has been over looked and that it will still be a problem in the RTM version, once it's released to the public on October 22nd. If this is a bug that I would say it should be classed as a 'Show Stopper' as NAS devices are very common these days and if people suddenly can't access their files they will be really annoyed and frustrated. Hence I hope and pray that this is fixed in the RTM release!!!Jonathan R. Portwood.Technical Director,PQSA Services."Assisting NGO's with IT Services."

Hi all,Well it's nice to be able to answer my own question!!After browsing throught some o the other questions on this forum, I found the answer to this NAS Authentication Issue in the following thread; "Networking with a MAC"http://social.technet.microsoft.com/Forums/en-CA/w7itpronetworking/thread/4606ad12-1f23-4231-8597-8e515422d57dSince both Mac OSX and the Linux based OS on the NAS Adaptor are Unix based I reasoned that similar problems for both OS's with Authentication and access of shares from Windows 7 would involve the same issues. My assumption turned out to be right!As mentioned in the above reference post the problem of accessing folders shared on an NAS adaptor involves the level of authentication that Windows 7, by default, uses. It's default is to use NTLMv2 for authentication, which I believe isn't supported in either Mac OSX or Linux yet. A second problem is the Minimum Session Security for NTVLM SSP based Clients, which in Windows 7 is "require 128 bit". To resolve these issues you need to follow the instructions shown in the above referenced post, which I've copied here below: 1. In Windows 7, open the Control Panel 2. Switch to "Classic" view 3. Double-click Administration Tools 4. Double-click Local Security Policy 5. Or Secpol.msc 6. Expand "Local Policies" and select "Security Options" 7. Alternate : Type secpol.msc to get editor up then 8. Locate "Network Security: LAN Manager Authentication Level" in the list and double-click it. 9. Change the setting from "Send NTMLv2 response only" to "Send LM & NTLM - use NTLMv2 session if negotiated" 10. Network Security: Minimum session security for NTLM SSP Based (including secure RPC) Clients 11. Change the setting from "require 128 bit" to unchecked (No Minimum) 12. Click OKI firstly tried just changing the item '9' on it's own and got an RPC Error message saying I didn't have access to the network resourse. After then changing item '11' I was, for the 1st time, able to access the folders on my Addonics NAS Share.After changing these Policies in the Local Security Policy Editor it's not necessary to reboot your system for them to take effect. Also you need to have Administrator Privilages to be able to make these changes to your system.I hope this helps others with the same NAS Access issues that I've experienced.Jonathan R. Portwood.Technical Director,PQSA Services."Assisting NGO's with IT Services."

Well, from other forums I have tried things like this and now have tried the one above, but no luck. I put back the setting to original everytime. the unchecked step 11 was never checked for me. There is probably another setting or something.I think we just need a darn update. It worked, now it does not.

I have a Iomega storcenter 750 which worked fine with XP. Changed to Win 7 and could only access the drive from the Win user profile i set the drive up in, with all other users i kept getting asked for a network username and PW.I setup a new user on the NAS drive with a password. Went to one of the Win users where i kept getting the network user/pw prompt. Enter the NAS username and password and checked the ' remember pw' box.I can now access the NAS from any user without having to input a User or PW, works after a reboot also.Hope this helps.

JontyRP, Thanks for the great information. I have a CoolMax CN-550 that I fought with for half of a day. I found your post, completed the steps above and it worked like a charm on all three Windows 7 machines. I was able to map the drives from the Computer window immediately after I made the changes. Now we are able to share files throughout the house. Thanks again, Jeff