Someone at my company was complaining about excel not opening in two windows to her second monitor, so I modified the registry. It was working fine. A couple weeks later I joined her to the domain since me and a coworker were setting up a subdomain for the new office.
After I moved her to the new subdomain, for some reason it wasn't prompting me for admin credentials when I attempted to change the network settings logged into her account, so being paranoid that I had inadvertently nuked her registry, I repaired the MS Office installation, restoring the Excel registry to normal tabbed window behavior.
It won't prompt me for admin credentials logged into her account for anything.
Can anyone help me as to why it's doing this? I already checked her dcomcnfg, and it's set to "Enable Distributed COM", "Connect" and "Identify." Thanks in advance!