A) Verify /tmp is not Full

1. Verify /tmp file system is not full

$ df /tmp
 Filesystem    512-blocks      Free %Used    Iused %Iused Mounted on
 Global            655360         0  100%     3677    43% /tmp

2. Clear out space from /tmp and make sure enough space is available.

3. Verify that Oracle user from which installation is getting done has permissions to write in /tmp location

4. Retry Installation

B )Verify the Mount option of /tmp and Software Media File System

1. Mount the source filesystem (where software medea exist) and the filesystem on which /tmp resides with the same ACL options.

or

2. Copy the installation software to /tmp and retry the installation.

A) Verify if c$ Admin share is enabled

1. Enable administrative share for C$ (Please check with your System Admin to do this or See Microsoft document http://support.microsoft.com/kb/314984)

2. Check that it is ok:
- net use \\<hostname>\c$ should work
- the current user (i.e. user in administrator group) should have all privileges on the default share

3. Retry the installation

4. Remove the administrative share again

B) Check if Windows services "OracleRemExecService" is running

Check if Windows services "OracleRemExecService" is running , this service gets created during installtion of 32 bit 64 client ,  if its running then follow below process:

Remove the OracleRemExecService before doing the Oracle Client 12c Release 1  32-bit or 64-bit installation on the same Microsoft Windows x64 (64-bit) server after installing the Oracle Client 64-bit or 32-bit software .

- Go to the  Windows 'Services'

- Stop OracleRemExecServiceV2

( This service is having a intelligence .Once someone tries to stop it this service gets deleted.
This is due to the  fact ,that this service is not running  from the Oracle Home like other oracle services ,but from temp .
For example : C:\Users\AppData\Local\Temp\\oraremservicev2\RemoteExecService.exe
)

- Then try to install the Oracle Client 32-bit or 64-bit on the same Microsoft Windows x64 (64-bit) server

C) Check if Windows Service “Server” is not running

Check if Windows Service “Server” is started on the system, if not started then start it and try again installation.