Debugging Excel Office Add-in with Visual Studio now requires Administrator mode

Question

We can no longer run our Excel Add-ins in debug mode.

This can be replicated by creating a new project in Visual Studio from the template: "Excel Web Add-in"

When the solution is run, the Add-in does not load, there is a loading spinner in the Task Pane, see image below.

Until perhaps the past 2 weeks this was not the case.

If Visual Studio is launched in Administrator mode then the Add-in runs as expected and the Task Pane loads.

Has something changed recently and if so how can we fix this?

Thank you.

Andrew Sinclair

Coderun Technologies

Answer 1

Hi @Andrew Sinclair

Until perhaps the past 2 weeks this was not the case.

From an Office perspective, I suggest you check the Office version name and version number. If you have Office updated recently, I suggest you rollback Office version to have a check.

To get earlier Office version number, you may refer to 'Update history for Microsoft 365 Apps (listed by date)'.

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