Another tidbit I ran into recently that I hit once long ago, and don’t want to forget it again:
I have a VM who’s name I changed. Trying to develop a WCF webservice for an SOA initiative, I ran into a completely inexplicable authentication failure when I tried to authenticate with my own local user on the machine.
Turns out the quick & easy fix (identified in this post from MS http://support.microsoft.com/kb/926642 ) ended up pointing me to the solution of:
adding
REG_MULTI_SZ key “BackConnectionHostNames” to my registry at
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0 .
One alias per line…
I added a couple lines for various aliases that I use for the machine, enabling me to authenticate as {alias}\{userName}, locally, on the machine.