As a member of the Microsoft Partners program I have downloaded the 64bit RTM version of Windows 7 and have had it installed for a coupled of weeks. I currently have this system configured as part of a Domain using Windows Server 2008 as the Domain Controller - again everything seems to be going pretty well. Only problem I have noticed here is with the log out screen - when a user logs out the little Red Control Icon in the lower right of the screen disappears so the user cannot send the system into "Sleep" mode. If you do "Ctrl+Alt+Del" the sign-in screen appears and the Icon comes back - then you can send the system into a "Sleep" mode - not sure this is a bug, could be the way it was supposed to work.Here is my big problem. I have a WHS on my home network - my music is on that server in a shared folder. The folder appears on my Win7 desktop but requires a sign in each time I try to use the folder with Windows Media Player - I also have movies on that system. Right or wrong, I tried mapping a drive directly to that folder so I could play music without having to provide a User ID and Password each time. It seemed to work as long as the system wasn't turned off, when it was turned off the drive wasunable to re-connect. In an effort to remove the drive or expose its "Properties"so I could try to remove or re-connect the drive I "Right-Clicked" the drive which started the littleblue ring spinning, andspinning and spinning.......until a window finally appeared (5 minutes) that said "Windows Explorer was no longer responding" and I was given three choices: Stop theProgram, Wait longer, or (can't remember) - anyway I chose to Stop Explorer, that window disappeared and another appeared that said "Windows was searching for a Solution" - this lasted for about 10 seconds at which point everything on my desktop disappeared to include the unresponsive window, the start button,the whole systray and all the Icons - I was left with a senic background, a mouse pointer and nothing to click on. I waited for several minutes before I finally did a hard kill and restarted the system.I tried this process three times, allwith the same result - I would very much like to"Un-map" the drive as it is effecting the time it takes to start-up the system. Before I mapped this drive it simply "snapped" into the desktop, now I have to wait for a minute or two while it tries to re-connect. I think we have a bug here - unless somone knows how to "Un-map" a drive without"right clicking".Thoughts....LJ

I suggest that you change the authentication level on the Windows 7 computer. Please refer the following article. Network security: LAN Manager authentication level In Windows 7, please change the level to Send LM & NTLM - use NTLMv2 session security if negotiated.Arthur Xie - MSFT

I just looked for the proper place to make this change - so far I don't see a location to check or change this setting - why would this change correct the issue with Windows Explorer becoming inactive when I "right click" on a mapped drive I am trying to remove?I just tried removing the drive again - same result, except I chose to "Restart Program" and while everything on the desk top disappeared, it did come back but I still can't remove my mapped drive.I will continue to look for the proper place to change the setting you suggest, but for now I can't find it.LJ

To change the setting, please open gpedit.msc and change related policy. It seems that the mapped drive disconnects and cannot re-connect automatically when you access it. If the authentication level is not matching, the re-connection may be failed. The way to change the setting is introduced in the above article.Arthur Xie - MSFT

Arthur;Have done a little more research and part of the problem is that the PC I want to use the mapped drive on is part of a Windows Server 2008 Domain and the WHS is not a member of that Domain. Apparently there is no reliable way to map a non-domain drive to a domain system. WHS is also written to prevent it from joining a Domain - which now isolates all my "shared" music to a system I cannot access. I have read a posting or two that tells one how to join WHS to a Domain - just not sure that that will do to my EULA.When I open Windows Media Player all the music stored on WHS is listed, but the files will not play. Clicking on the files simply sets the little Windows 7 "loop" spinning and eventually it tells you that the program has stopped responding. I was finally able to disconnect the mapped drive by "right clicking" and simply waiting for about 10 minutes while it did something, then a menu appeared that included a disconnect option - the system now boots normally, but I cannot access the music at all.I have looked at the article you suggested, but I cannot locate the proper location to change authentication.LJ

You can open gpedit.msc, locate to the branch Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options\. Then make the change on the policy Network security: LAN Manager authentication level. Change to Send LM & NTLM - use NTLMv2 session security if negotiated. If your system is Windows 7 Home Premium, you need to modify it via Registry. 1. Launch regedit from Start Search box.2. Find the following branch. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa 3. Create a DWORD key under Lsa and set: Name: LmCompatibilityLevel Value: 1 4. Restart.Arthur Xie - MSFT