"User Not Recognized" when installing UPK with Windows Authentication

Question

Hi all,
When installing UPK Server with Windows Authentification mode, everything work fine until when the installer starts populating the Library. I get an error message saying "User is not recognized. Please enter a valid administrator user name and password. Click OK to enter another name or click Cancel to stop the upgrade process."
I tried using "my current Window account" and different Windows account when asking to give a default Developer admin login during the install but I still get the same message.
I might be forgeting something this time since I have installed UPK tones of times and never got this error.
Many thanks.

Answer 1

Hello,
Thank you!! After much testing and environment and OS changes, I found out that I totally forgot my Windows administration from over 7 years ago on a security feature that Microsoft put into their OS's. If you are using a friendly DNS name to publish to your clients (instead of them typing in the server name as the URL) and you want to utilize Windows authentication, a registry entry will need to be entered in order for the OS to be allowed to pass the windows auth through to that URL as well.
Example registry entry:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0]
"BackConnectionHostNames"=hex(7):
KB Article:
http://support.microsoft.com/kb/896861
In Registry Editor, locate and then click the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0
Right-click MSV1_0, point to New, and then click Multi-String Value.
Type BackConnectionHostNames, and then press ENTER.
Right-click BackConnectionHostNames, and then click Modify.
In the Value data box, type the host name or the host names for the sites that are on the local computer, and then click OK.