CODEWITHSUNDEEP
outlookvstooffice-addins
Salim
Salim

Reputation: 505

Outlook Add-In manual load > Not a valid Office Add-In

I am working on an Outlook Add-in which works perfectly when loaded from the registry but it seems impossible to load it manually. When trying from the Outlook File > Options > Add-Ins > "Manage -> Go..." and manually select the dll or Vsto file, I receive the message "MyAddIn is not a valid Office Add-In". I tried with admin right on the machine. Any idea why?

Upvotes: 0

Views: 1241

Answers (1)

Eugene Astafiev
Eugene Astafiev

Reputation: 49397

You need to add windows registry keys before. See Registry entries for VSTO Add-ins for more information.

If you want to add and load your add-in manually make sure the assembly you point implements the IDTExtensibility2 interface. Otherwise, you will end up with an error message. In the case of VSTO add-ins, you may try to point to the .vsto file.

Upvotes: 1

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