Trouble checking JRE in installer

I've made an installer that makes use of the JRE checking script available here:


When I use this script, my installer produces the error "No Java Runtime Environment could be found on your computer" even though I have Java 1.8 installed. If I understand the logic of this script correctly, this should occur if my Java registry keys aren't set.

I've checked my registry keys, and the following are set:

HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment: CurrentVersion = 1.8
HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment\1.8: JavaHome = C:\Program Files\Java\jre1.8.0_40

I don't understand why I'm seeing the "No Java Runtime Environment" error - does anyone have any insight?

64-bit version of Windows?

64-bit version of Java (does that even exist)?

Are you using SetRegView in your script?

I ran into the same issue but didn't have time to actually check what caused it, instead a simple workaround did the trick for now...

!define JAVA_JRE_REGPATH  "SOFTWARE\JavaSoft\Java Runtime Environment"

!define JAVA_JRE_REGPATH2 "SOFTWARE\Wow6432Node\JavaSoft\Java Runtime Environment"

!define JAVA_JDK_REGPATH  "SOFTWARE\JavaSoft\Java Development Kit"

!define JAVA_JDK_REGPATH2 "SOFTWARE\Wow6432Node\JavaSoft\Java Development Kit"

!define JAVA_DOWNLOAD_URL "http://www.java.com/download"

   # Java Version/Installation Check

    SetRegView 32                                                  # Make sure we're checking x86 Registry

    !ifdef DEBUG

     StrCpy $RegPlatform "x86"

    !endif

    ReadRegStr $R0 HKLM "${JAVA_JRE_REGPATH}" "CurrentVersion"

    IfErrors 0 JavaCheckDone

    ReadRegStr $R0 HKLM "${JAVA_JDK_REGPATH}" "CurrentVersion"

    IfErrors 0 JavaCheckDone

    ReadRegStr $R0 HKLM "${JAVA_JRE_REGPATH2}" "CurrentVersion"

    IfErrors 0 JavaCheckDone

    ReadRegStr $R0 HKLM "${JAVA_JDK_REGPATH2}" "CurrentVersion"

    IfErrors 0 JavaCheckDone



    SetRegView 64                                                  # Make sure we're checking x64 Registry

    !ifdef DEBUG

     StrCpy $RegPlatform "x64"

    !endif

    ReadRegStr $R0 HKLM "${JAVA_JRE_REGPATH}" "CurrentVersion"

    IfErrors 0 JavaCheckDone

    ReadRegStr $R0 HKLM "${JAVA_JDK_REGPATH}" "CurrentVersion"

#    IfErrors 0 JavaCheckDone

#    ReadRegStr $R0 HKLM "${JAVA_JRE_REGPATH2}" "CurrentVersion"

#    IfErrors 0 JavaCheckDone

#    ReadRegStr $R0 HKLM "${JAVA_JDK_REGPATH2}" "CurrentVersion"



    JavaCheckDone:

   !ifdef DEBUG

    MessageBox MB_OK|MB_ICONINFORMATION "Java Version Detected: $R0 $RegPlatform"

   !endif



   IntCmp $R0 ${PRODUCT_MINJAVAVERSION} +3 0 +3

    MessageBox MB_YESNO|MB_ICONQUESTION "${MSG_NOJAVA}" /SD IDNO IDNO +2

     ExecShell "open" "${JAVA_DOWNLOAD_URL}"

   SetRegView 32                                                  # Make sure we're back to the x86 Registry

This used to work fine: