Earlier this week, we raised our domain functional level from 2000 to 2003. That appeared to go without a hitch, but several days later strange events began to occur.
1) Windows 7 machines stopped getting DHCP. We found a work around for that by doing the following:
net localgroup Administrators /add networkservice
press enter then type:
net localgroup Administrators /add localservice
After a reboot, that allowed machines to get an IP address again. Users, however, can no longer ping. and receive an error message that states:
PING: transmit failed. General failure.
In addition to this, an IIS server in our domain blocks access to temp files, and causes a web page to error out. The work around there is to add full access to authenticated users. However after about 12-24 hours, the error re-occurs, and our work-around needs to be applied again.
It's acting like Network Service account was removed from local machines administrators domain wide.
I'm wondering if anyone has seen anything like this, and if they have any suggestions on what might be causing this problem. It's driving my help desk (and users) completely mad.
Thanks in advance.