Outlook add-in installs on Office Professional but not on Office 365

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Outlook add-in installs on Office Professional but not on Office 365
 
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Steve Faleiro




Posts: 15
 Joined: 2024-09-12
I developed an add-in that I tested on my PC with Outlook 2021 Professional 64-bits running on Windows 10. The same add-in does not work on another PC with Outlook 365 (desktop application) 64-bits running on Windows 11. After installation, I also manually registered the addin in a Administrator command prompt with regsvr32. Still it did not show up in Outlook. Then I manually tried to add the add-in from Outlook COM Addins dialog, and when doing that, it gave an access violation.

Can you provide some clues as to what is wrong and how I can fix this issue?
Posted 27 Sep, 2024 14:53:09 Top
Dmitry Kostochko


Add-in Express team


Posts: 2887
 Joined: 2004-04-05
Hello Steve,

I may assume that in your add-in you use some third-party components/libraries which are absent on the target PC. Please check this. Also, please make sure you registered the 64-bit version (DLL) of your add-in.

If it is not the case, could you please send your add-in project (or some demo project with the same behavior) to me for testing? I will try to find the cause.
Posted 27 Sep, 2024 15:57:57 Top
Steve Faleiro




Posts: 15
 Joined: 2024-09-12
Hi Dmitry,

The add-in is using JVCL and ICS components. I have sent the add-in source code to you via the website's Contact Support submission form.
Posted 27 Sep, 2024 16:35:05 Top
Dmitry Kostochko


Add-in Express team


Posts: 2887
 Joined: 2004-04-05
Hello Steve,

It is a bit odd but we did not receive any emails from you. I have just emailed to you, please check your Inbox.
Posted 30 Sep, 2024 12:13:45 Top
Steve Faleiro




Posts: 15
 Joined: 2024-09-12
Hi Dmitry,

Its odd, because I used the website Contact Support submission form and the form submission worked okay. In any case, I have received and responded to your email with the add-in source code.
Posted 30 Sep, 2024 14:30:08 Top
Dmitry Kostochko


Add-in Express team


Posts: 2887
 Joined: 2004-04-05
Hello Steve,

I received your message, thank you. I would suggest that we continue our investigations via email.
Posted 01 Oct, 2024 10:58:31 Top