Jessek,
The url listed in the logs is correct. Thank you for the command line option using AeXSWDInstSvc.exe.
Matt,
Thanks for pointing me directly to the article.
I think I have figured out the issue. I have to wait till after our 4 am maint. window tonight to find out for sure, but I found this article:
www.altirigos.com/vbulletin/notification-server/8079-agent-installs-no-guid.html which directly listed the 401 error I was receiving. I did have the IUSR_ account in the guests local group and this might be most of my issue. I will try the command line installs again tomorrow after a server reboot and will see if this fixes my issue.
Thank you both for your help.
Marco