We had a major network issue where our secondary domain controller (responsible for Win2k3 boxes) died and had to be rebuilt (I beleive this is what happened, I am a developer not network admin).

Anyway, I am working remotely via VPN at the moment and since this happened, I am getting an authentication box when trying to access certain areas of SDL Tridion via IE (Tridion 2009 SP1 is IE only) it seems like somewhere my credentials are not being passed correctly or the ones cached on my laptop do not match the ones the Domain Controller has.

This only seems to affect Windows 2003 servers. Our IT support thinks that the only way to sort it out is to connect my laptop directly to the network. I am not planned to go to the office for a few weeks at least and this issue means I have to work with Tridion via Remote Desktop. We thought changing the password on my account might work but this didn't help.

So basically my question is, is there any way I can reset my credential cache without having to reconnect to the network? Or is it IE that is causing the problem perhaps, since I can RDP to servers and use Tridion 2011 instances in other browsers fine?

I am on Windows 7 using SonicWall VPN client.