I'm currently running exchange server 2003 standard on a windows server 2003 box.
I also have another box with exchange 2010 on windows server 2008R2.
I joined the domain (member server) and installed exchange 2010 without too much trouble.
Added the server to the site, and for a while was able to test/coexist.
A student i had, ran a command (not sure which one) that reset the permissions in AD for these servers.
I re-ran DomainPrep for the exchange 2003 server and all is well with it.
However, I cannot get any domain prep to re-run for 2010.
A DOS window opens and says copying files, then it just goes away.
I need to get the permissions reset and cannot seem to do so.