I tried to install Remote Server Administration Tools on my Windows 8 laptop and received an error stating:
Installer encountered an error: 0x80004005
However if I extracted the .msu file with the following command:
expand -f:* Windows6.2-KB2693643-x64.msu .
and installed the cab Windows6.2-KB2693643-x64.cab using pkgmgr:
pkgmgr /ip /m:Windows6.2-KB2693643-x64.cab /l:rsat.log
the tools installed successfully.
Note that the installation will run in background, check for pkgmgr on the Details tab in Task Manager, when the process terminates the installation is complete.