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DorRamati-2602 asked ·

Sign an office addin

Hi
We have an old c# com excel addin. (not vsto )

We use signtool to sign the addin with extended Sectigo certificate.
But still Excel 2016 complains that the addin is not signed. ( when this option in trust center is enabled)

Is com addins are still supported? if yes - what is the way to sign the DLLS correctly
Thanks
Dror

office-addins-dev
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