AC 300 Install
The Accelerator for Sage 300 client is installed as an Office 365 add-in only.
It requires an Office 365 subscription.
The url for the manifest is
In future the add-in will be available from the Office 365 add-in store.
For a user to add in the manifest just for themselves open outlook and click the Get Add-ins button
Click the Custom add in area
Select the "URL" option and add in the manifest link above.
Once added it will appear like this on the screen
Reload/Restart Outlook. It may take a few minutes for the add in to appear.
Thats it for Installing the client for a single user.
Office365 does allow you deploy centrally also. Please see Microsofts documentation on how to do this.