Steps:
1. Launch the “Server Manager”
2. Click Role, Click “Add Roles” in the right panel
3. Click Next, Select the checkbox of “File Services”, Click Next.
4. When the “Select Role Services” appears, select the checkbox of “Service for Network File System”
5. Click Next, Click install.
Important Note: Sorry for the wrong information at first, as the Microsoft document is actually missing!
NFS4 server uses port 2049 only, no port mapping
Run “startsrc -s nfsrgyd” on client and server
Must use public file system, list the available using “nfsd -getnodes”, or else you’ll get an error indicating “No such filesystem or directory”
Can export for version 3 and for version 4 simultaneously (2 versions of the same export), Windows services for Unix seem to support only V3
Just disable the “Offline Files”
Open Windows Explorer -> Tools -> Folder Options -> Offline Files
Remove the tick from “Enable Offline Files”
There you go!
Source: http://forums.virtualbox.org/viewtopic.php?f=2&t=27062&p=188821#p188821
In order to fix the problem, issue the following command at the Exchange shell, which allows Exchange POP to use plain text credentials:
Set-PopSettings -LoginType PlainTextLogin
Then restart the POP3 service, that’s it!
Source: http://support.qualityunit.com/knowledgebase/supportcenter/troubleshooting/user-error-command-is-not-valid-in-this-state..html
Just Some Techie Notes! 