Detect whether Office is 32bit or 64bit via the re

Question

Now that Office also comes in a 64bit install, where in the registry do you find out if the version of Office installed is 32bit or 64bit?

Answer 1

Another way to detect the bitness of Office is to find out the typelib.

For example, to detect Outlook's bitness, write a .JS file as following:

function detectVersion()
    var outlooktlib = "TypeLib\\{00062FFF-0000-0000-C000-000000000046}";
    var HKCR = 0x80000000;

    var loc = new ActiveXObject("WbemScripting.SWbemLocator");
    var svc = loc.ConnectServer(null,"root\\default");
    var reg = svc.Get("StdRegProv");

    var method = reg.Methods_.Item("EnumKey");
    var inparam = method.InParameters.SpawnInstance_();
    inparam.hDefKey = HKCR;
    inparam.sSubKeyName = outlooktlib;
    var outparam = reg.ExecMethod_(method.Name,inparam);
    tlibver = outparam.sNames.toArray()[0];

    method = reg.Methods_.Item("GetStringValue");
    inparam = method.InParameters.SpawnInstance_();
    inparam.hDefKey = HKCR;
    inparam.sSubKeyName = outlooktlib + "\\" + tlibver + "\\0\\win32";
    inparam.sValueName = "";
    outparam = reg.ExecMethod_(method.Name,inparam);
    if(outparam.sValue) return "32 bit";

    method = reg.Methods_.Item("GetStringValue");
    inparam = method.InParameters.SpawnInstance_();
    inparam.hDefKey = HKCR;
    inparam.sSubKeyName = outlooktlib + "\\" + tlibver + "\\0\\win64";
    inparam.sValueName = "";
    outparam = reg.ExecMethod_(method.Name,inparam);
    if(outparam.sValue) return "64 bit";

    return "Not installed or unrecognizable";
}

You could find out other Office component's typelib id, and replace the first line of the function for it. Here is a brief list of interesting IDs:

{4AFFC9A0-5F99-101B-AF4E-00AA003F0F07} - Access
{00020905-0000-0000-C000-000000000046} - Word
{00020813-0000-0000-C000-000000000046} - Excel
{91493440-5A91-11CF-8700-00AA0060263B} - Powerpoint
{0002123C-0000-0000-C000-000000000046} - Publisher
{0EA692EE-BB50-4E3C-AEF0-356D91732725} - OneNote 2010+
{F2A7EE29-8BF6-4A6D-83F1-098E366C709C} - OneNote 2007

All above lib id were found through the Windows SDK tool OLE-COM Object Viewer, you could find out more lib id's by using it.

The benefit of this approach is that it works for all versions of office, and provides control on every single component in you interest. Furthermore, those keys are in the HKEY_CLASSES_ROOT and deeply integrated into the system, so it is highly unlikely they were not accessible even in a sandbox environment.

Answer 2

You can search the registry for {90140000-0011-0000-0000-0000000FF1CE}. If the bold numbers start with 0 its x86, 1 is x64

For me it was in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\14.0\Registration{90140000-0057-0000-0000-0000000FF1CE}

Source

Answer 3

I found this approach:

If HKLM\Software\WOW6432Node exists then Windows is 64-bit.

If HKLM\Software\WOW6432Node\Microsoft\Office exists, then Office is 32-bit.

If HKLM\Software\WOW6432Node\Microsoft\Office does not exist, but HKLM\Software\Microsoft\Office does exist, then Office is 64-bit.

If HKLM\Software\WOW6432Node does not exist, then Windows and Office are 32-bit.

Source: Technet Forums