I have developed an addin for Microsoft word and its working perfectly on 32 bit of office applications. Unfortunately I found that an installer for 64-bit Windows requires two registry paths because it’s possible for users to run 32-bit and 64-bit versions of Office on a computer that runs 64-bit Windows
On a 64 bit of windows:
HKEY_LOCAL_MACHINE\SOFTWARE(32-Bit)\Microsoft\Office\Excel\Addins\SampleCompany.WordAddIn
HKEY_LOCAL_MACHINE\SOFTWARE(64-Bit)\Microsoft\Office\Excel\Addins\SampleCompany.WordAddIn
I have developed a setup using Wix Installer, ut for me 32 bit works perfectly and for 64 bit my addin was not not loaded and I troubleshooted using this link. Atlast I found that my Addin was loaded under InActive Application Add-Ins in Microsoft word. I tried enabling it, thought it was not getting enabled and still remains in the same place!
What was the problem..?
My WIX project TargetPlatform was x86.