SYMPTOM
When installing Oracle 12.1.0.2 32bit client onto Windows Server 2012R2, the following error occurred.

SOLUTION
1) Click “..\winnt_12102_client32.zip\client32\stage\ext\bin\vcredist_x86.exe” and install “Microsoft Visual C++ 20xx Redistributable Package (x86)”. Then click “Retry again” to complete the installation successfully.
OR
2) Before installation, change “”..\winnt_12102_client32.zip\client32\install\oraparam.ini”. Then start the installation.
From :
MSVCREDIST_LOC=vcredist_x64.exe
TO;
MSVCREDIST_LOC=vcredist_x86.exe