There's nothing to do. I've never heard of the problem, nor can I duplicate it in any of my sandbox apps for Drag & Drop.
Of course, I don't run UAC and always run as an admin anyways.
But, 5 seconds in Google revealed
this little blog post[
^] and the method to fix the problem.
Basically, you cannot drag from a lower privilege process into one running as an admin for security reasons. The only work around is to disable UAC or prevent UAC prompting for credentials if the user account is in the administrators group, thereby forcing everything an admin user runs to launch with admin level priv's.