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Persisting Settings across Outlook updates

Simon 1 Reputation point
2021-03-26T05:49:51.593+00:00

I have written and Outlook 365 Add-in in C# and have been using the Settings [Properties.Settings.Default.Save] method to persist those user settings across sessions.

However, every time the Outlook application is updated, a new version of the settings file is created from the original default, rather than copying the previous settings file.

The settings files live here. C:\Users*[User]*\AppData\Local\Microsoft_Corporation[Add-in]
Browsing this directory shows a folder for each Outlook version since the add-in was created.

How can these settings be persisted across the Outlook updates?

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