Error Fixing SQLDeveloper MSVCR71.DLL Not Found Error on windows 8 or windows 7

The Solution

To fix it, properly, you need to install SQLDeveloper yourself. Fortunately, this is simple.

• Run regedit as the Administrator
• Expand HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths
• Add a new Key to App Paths called sqldeveloper.exe
• Set the (Default) value to the full path to the executable (including the executable name).
• Create a new String value for sqldeveloper.exe called Path and set its value to the jre / bin folder in the SQLDeveloper files.