OAF: The program can't start because MSVCR71.dll is missing from your computer. In one of my project, in one machine we were not able to open the Jdeveloper (Version 10.1.3.5 - Patch 19170592 ) which we downloaded from the Metalink Note. This post is to help those who face this issue and don't know what to do to fix this. OA Framework - How to Find the Correct Version of JDeveloper for OA Extensions to Use with E-Business Suite 11i or Release 12.x (Doc ID 416708.1) After downloading p19170592_R12_GENERIC.zip , unzipped the contents into C:/oracle/Jdev10.1.3.5 . After that when we tried to open the Jdeveloper using C:/oracle/Jdev10.1.3.5/jdevbin/jdev/bin/jdevW.exe , we were getting the below error. " The program can't start because MSVCR71.dll is missing from your computer. Try reinstalling the program to fix this problem. " Fix: You just need to copy the msvcr71.dll file from C:/oracle/Jdev10.1.3.5/ jdevbin/ jdk /bin to C:/oracle/Jdev10.1.3.5/