Add-In Error: Content is blocked because it isn't signed by a valid ...
Mar 28, 2022 · The easy solution that worked for me was remove .office-addin-dev-cer from User folder. Then by running my Add-Ins by npm start I got popped by a message box to remove …
How to troubleshoot a VSTO addin that does not load?
The addin was not starting due to this other excel application running (I was migrating an MSAccess application to VSTO), so Access had an automation app open hidden. In short, if …
How do you take a vba addin and make an installer?
I have written a vba module that installs an addin button to excel. I would like to deploy it on many computers as easy as possible. Currently, these are my steps. Save the excel as *.xlsm Open …
office js - Why is my addin working in outlook classic but not in …
May 28, 2025 · I created a outlook addin following the samples in the microsoft documentation with the unified manifest. The addin works perfectly in outlook classic but in the new outlook, …
How do you enable excel add-ins for all users using registry …
Jun 24, 2022 · I'm trying to enable an excel add-in for all users in a given lab (Office 2019 is installed). The path to the add-in's "OPEN" string in the registry is …
Outlook Add-In office 365 deployment > Add-In not visible
Dec 16, 2018 · I am trying to build my first Outlook Add-In (not VSTO) and followed the tutorial here. After setting up my Office 365 developer license/environment, I finally manage to …
How to force Microsoft Office Addin to use Edge Webview2 runtime
Oct 13, 2021 · I read this nice article from Microsoft explaining how the Addin runtime works. I am using Windows 10 Enterprise and the system has already Microsoft Edge WebView2: My …
Error deploying VSTO Office addin - Stack Overflow
I found a workaround by installing the addin using MSI. This Guide was a lot of help. Taken from the section about registry settings for the msi installation: It is important to note the ‘|vstolocal’ …
How to troubleshoot why Excel disables an add-in?
Nov 4, 2015 · Blocking calls in your addin or in code that you are calling that might lead to a user killing a non-responsive Excel? Good luck tracking down the issue. Edit: I apologise, there are …
What is the difference between a COM Add in and a VSTO Add in
Jan 26, 2012 · I have not personally found a need to use AddIn-Express, but you may find it helps you if you don't want to invest the time in learning the VSTO framework. This choice also …