To install properly across all nodes, OUI uses the temporary folders defined within Microsoft Windows.

The TEMP and TMP environment variables should point to the same local directory on all nodes in the cluster.

By default, these settings are defined as %USERPROFILE%\Local Settings\Temp and %USERPROFILE%\Local Settings\Tmp in the Environment Settings of My Computer. It is recommended to explicitly redefine these as %WINDIR%\temp and %WINDIR%\tmp.

For example, if Windows is installed on the C drive, then the temporary directories would be defined as C:\Windows\temp or C:\Windows\tmp for all nodes.