I have developed an Outlook 2007 Add-in using Visual Studio 2010 (on Windows 7 64 bit Machine). Following is the properties window of my project:
This is working fine on all Windows 7 Machines, even if any machine does not have .net framework client then this is installed by setup & work correctly.
But now when I tried to install it on Windows XP (32 bit) machine, it installed successfully, also all registries were created as they are creating on other systems. But the Add-in is listed under Inactive Application Addins section on Trust Center -> Addins.
When I checked the COM Addins, I found following error:
Not Loaded. A runtime error occurred during the loading of the COM Add-in.
Then I selected x86 as Plateform target & build the setup but still the same output. I also installed full .net framework on that machine but no success at all.
EDIT 1: I performed following steps for debugging, but no success:
1) I have set the VSTO_SUPPRESSDISPLAYALERTS=0 to display alert message for any exception, but no message was displayed. as mentioned in following blog: Link to blog post. Note: there were alert messages for other previously Add-in(s) but not for mine.
2) I have Manually installed .NET Framework 3.5, .NET Framework 4.0, VSTO 3 Runtime, VSTO 4 Runtime.
3) I tried to write log file in my Add-in code, but that only worked on my development machine & not on windows XP machine. As that never triggered.
EDIT 2: I also installed Visual Studio on XP machine & created a new Outlook 2007 Addin project. When I ran the project it opened the outlook like on my development machine, but my Addin is listed in InActive Applications Addins section. No success.
I also tried to uninstall .net framework 4.0 & 3.5 & then installed .net framework 3.5, after that I also installed .net framework 3.5 sp1, as this was suggested in some posts, then installed my Addin Setup, that Installed .net client 4.0. But still the same result.
Thanks