PSExec “доступ отклонен” на WS '03?

I would suggest disabling Simple File Sharing on the target machine. Tools > Folder options > View tab, scroll to bottom and uncheck Simple File Sharing.

http://forum.sysinternals.com/topic3698_page1&TPN=1.html

Try doing it like this:

psexec \\LOC-Server -u **DOMAIN**\AdminUser -p AdminPW cmd

Or, it could be due to:

psexec \\LOC-Server -u AdminUser -p AdminPW **cmd.exe**