Outlook integration: “An unexpected error occurred” in the Outlook Panel when trying to send an email

The Console logs from the Outlook Integration pane or browser can give useful information if accessed when the error happens.  Likewise the Salesforce Console and Console Logs can also shed light as to what may be executing at the time of the error.

To obtain the console logs from the Outlook Integration on Windows:

1. Right-click on the Outlook Integration add-in/side panel - Select Inspect
2. In the DevTools window, click on the Console tab
3. Check for errors and URLs references in the console
4. Also check the Network tab in the Dev tools

For MAC OS see: Get Console Logs for Outlook Integration on Mac OS