Description: Microsoft regularly releases updates to the services they offer, such as Windows and Outlook. These updates typically include vital security updates as well as some code updates that, if not installed promptly, can cause other programs to encounter issues.
To ensure your system is up to date, please reference the below steps to identify if this resolves the Delivery Trust Outlook Plugin issue you encountered:
Step 1: Ensure your Windows Operating System is Updated
Windows 7:Open Windows Update by clicking the Start button . In the search box, type Update, and then, in the list of results, click Windows Update. In the left pane, click Check forupdates, and then wait while Windows looks for the latest updates for your computer.
Step 2: Ensure your Outlook Email Client is Updated
Outlook 2007/2010/2016: Click Here to Navigate to Microsoft's Outlook Update Instructions
Step 3: Restart your computer
Step 4: Test your Add-On by Composing a New Email