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How to: Check the Version of Outlook

Last modified: October 16, 2012

Applies to: Outlook

This topic provides a code sample that checks version information of installed versions of Microsoft Outlook if the installed version is Microsoft Outlook 2013, Microsoft Outlook 2010, Microsoft Office Outlook 2007, or Microsoft Outlook 2003. Checking the version of Outlook is sometimes necessary to ensure that a MAPI application calls API elements that are supported by the currently running version of Outlook.

The following code sample, PrintOutlookVersionString, obtains full version strings by using the MsiProvideQualifiedComponent and MsiGetFileVersion functions, as declared in the Msi.h file in the Microsoft Windows Software Development Kit (SDK). PrintOutlookVersionString also returns a pointer to a Boolean variable that indicates whether a 64-bit version of Outlook is installed. For information about the expected values for the different parts of a version string for some released versions of Outlook, see How to determine Outlook version information.

void PrintOutlookVersionString()
{
TCHAR pszOutlookQualifiedComponents[][MAX_PATH] = {
TEXT("{E83B4360-C208-4325-9504-0D23003A74A5}"), // Outlook 2013
TEXT("{1E77DE88-BCAB-4C37-B9E5-073AF52DFD7A}"), // Outlook 2010
TEXT("{24AAE126-0911-478F-A019-07B875EB9996}"), // Outlook 2007
TEXT("{BC174BAD-2F53-4855-A1D5-0D575C19B1EA}")  // Outlook 2003
};
int nOutlookQualifiedComponents = _countof(pszOutlookQualifiedComponents);
int i = 0;
UINT ret = 0;

for (i = 0; i < nOutlookQualifiedComponents; i++)
{
DWORD dwValueBuf = 0;
LPTSTR pszTempPath = NULL;
LPTSTR pszTempVer = NULL;
bool b64 = false;

ret = pfnMsiProvideQualifiedComponent(
pszOutlookQualifiedComponents[i],
TEXT("outlook.x64.exe"),
(DWORD) INSTALLMODE_DEFAULT,
NULL,
&dwValueBuf);
if (ERROR_SUCCESS == ret)
{
b64 = true;
}
else
{
ret = pfnMsiProvideQualifiedComponent(
pszOutlookQualifiedComponents[i],
TEXT("outlook.exe"),
(DWORD) INSTALLMODE_DEFAULT,
NULL,
&dwValueBuf);
if (ERROR_SUCCESS == ret)
{
b64 = false;
}
}

if (ret == ERROR_SUCCESS)
{
dwValueBuf += 1;
pszTempPath = (LPTSTR) malloc(dwValueBuf * sizeof(TCHAR));
if (pszTempPath != NULL)
{
if (ERROR_SUCCESS == pfnMsiProvideQualifiedComponent(
pszOutlookQualifiedComponents[i],
TEXT("outlook.exe"),
(DWORD) INSTALLMODE_EXISTING,
pszTempPath,
&dwValueBuf))
{
pszTempVer = (LPTSTR) malloc(MAX_PATH * sizeof(TCHAR));
dwValueBuf = MAX_PATH;
if (ERROR_SUCCESS == pfnMsiGetFileVersion(pszTempPath,
pszTempVer,
&dwValueBuf,
NULL,
NULL))
{
printf("Path: %s\nVersion: %s\n64 bit: %s\n", pszTempPath, pszTempVer, b64?_T("true"):_T("false"));
}
}
}
free(pszTempVer);
free(pszTempPath);
}
}
}HRESULT GetOutlookVersionString(LPTSTR* ppszVer, BOOL* pf64Bit)
{
    HRESULT hr = E_FAIL;
    LPTSTR pszTempPath = NULL;
    LPTSTR pszTempVer = NULL;
    TCHAR pszOutlookQualifiedComponents[][MAX_PATH] = {
        TEXT("{E83B4360-C208-4325-9504-0D23003A74A5}"), // Outlook 2013
        TEXT("{1E77DE88-BCAB-4C37-B9E5-073AF52DFD7A}"), // Outlook 2010
        TEXT("{24AAE126-0911-478F-A019-07B875EB9996}"), // Outlook 2007
        TEXT("{BC174BAD-2F53-4855-A1D5-0D575C19B1EA}")  // Outlook 2003
    };
    int nOutlookQualifiedComponents = _countof(pszOutlookQualifiedComponents);
    int i = 0;
    DWORD dwValueBuf = 0;
    UINT ret = 0;

    *pf64Bit = FALSE;

    for (i = 0; i < nOutlookQualifiedComponents; i++)
    {
        ret = MsiProvideQualifiedComponent(
            pszOutlookQualifiedComponents[i],
            TEXT("outlook.x64.exe"),
            (DWORD) INSTALLMODE_DEFAULT,
            NULL,
            &dwValueBuf);
        if (ERROR_SUCCESS == ret) break;
    }

    if (ret != ERROR_SUCCESS)
    {
        for (i = 0; i < nOutlookQualifiedComponents; i++)
        {
            ret = MsiProvideQualifiedComponent(
                pszOutlookQualifiedComponents[i],
                TEXT("outlook.exe"),
                (DWORD) INSTALLMODE_DEFAULT,
                NULL,
                &dwValueBuf);
            if (ERROR_SUCCESS == ret) break;
        }
    }
    else
    {
        *pf64Bit = TRUE;
    }

    if (ret == ERROR_SUCCESS)
    {
        dwValueBuf += 1;
        pszTempPath = (LPTSTR) malloc(dwValueBuf * sizeof(TCHAR));
        if (pszTempPath != NULL)
        {
            if ((ret = MsiProvideQualifiedComponent(
                pszOutlookQualifiedComponents[i],
                TEXT("outlook.exe"),
                (DWORD) INSTALLMODE_EXISTING,
                pszTempPath,
                &dwValueBuf)) != ERROR_SUCCESS)
            {
                goto Error;
            }

            pszTempVer = (LPTSTR) malloc(MAX_PATH * sizeof(TCHAR));
            dwValueBuf = MAX_PATH;
            if ((ret = MsiGetFileVersion(pszTempPath,
                pszTempVer,
                &dwValueBuf,
                NULL,
                NULL))!= ERROR_SUCCESS)
            {
                goto Error;    
            }
            *ppszVer = pszTempVer;
            pszTempVer = NULL;
            hr = S_OK;
        }
    }

Error:
    free(pszTempVer);
    free(pszTempPath);
    return hr;
}


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