How To Install Winword Exelon
This looks like the same proposed solution linked to by Longball27, except updated to handle Office 2010. There are two problems with this. The Microsoft.Office.Interop.Word dll may not be installed even if Word is installed, for example if Word was installed before.Net was installed or if a partial install of Office was done instead of a complete install.
This is perhaps most typical for partial installs of only Outlook - the corresponding Microsoft.Office.Interop.Outlook dll is typically not installed until the user downloads and installs the 'Primary Interop Assembly' for Outlook.–Feb 18 '12 at 17:39. A bonus would be if I can detect the specific version(s) of Excel that is(/are) installed.I know the question has been asked and answered a long time ago, but this same question has kept me busy until I made this observation:To get the build number (e.g. 15.0.4569.1506), probe HKLMSOFTWAREMicrosoftOfficeVERCommonProductVersion::LastProduct, where VER is the major version number (12.0 for Office 2007, 14.0 for Office 2010, 15.0 for Office 2013).On a 64-bit Windows, you need to insert Wow6432Node between the SOFTWARE and Microsoft crumbs, irrespective of the bitness of the Office installation.On my machines, this gives the version information of the originally installed version. For Office 2010 for instance, the numbers match the ones listed, and they differ from the version reported in File Help, which reflects patches applied by hotfixes. Despite the fact that this question has been answered long time ago, I found some interesting facts to add that are related to the answers above.As Dirk mentioned, there seems to be a weird fashion of version control from MS, starting from Office 365 / 2019.
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You cannot distinguish among the three(2016, 2019, O365), by seeing at the executable paths anymore. And just like he reputed himself, looking at the builds of the executable, as a mean of telling which is what, isn't quite effective either.After some researching, I found a feasible solution. The solution lies under the registry subkey ComputerHKEYCURRENTUSERSoftwareMicrosoftOffice16.0CommonLicensingLicensingNext.So, my logic follows below:Case 1: If the computer has the MSOffice 2016 installed, there is no subkeys under Licensing.Case 2: if the computer has MSOffice 2019 installed, there is the name of the value (which is one of the Office Product ID). Standard2019Volume)Case 3: if the computer has Office365 installed, there is a value called o365bussinessretail(which is also a product ID) along with some other values.The possible productIds are provided.To distinguish the three, I just opened the key and see if fails. If the open fails, its Office 2016. Then I enumerate LicensingNext and try to see if any name has a prefix o365, if it finds it then its O365.
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If it does not, then its Office 2019.Frankly speaking, I did not have enough time to test the logic under varying environment. So please, note that.Hope this will help whoever's interest.