Product Family: Act!
Product: Act! Pro, Premium (access via web)
Version: v18, v19
Third Party: Microsoft Outlook 2016, Office 365
This issue occurs due to Microsoft Office updates in Office 2016 Click-to-Run based installations in versions 16.0.6965.2058 or later versions.
You can verify your version in Outlook by Clicking File > Outlook Account (or Office Account), then by clicking About Outlook
To resolve this, apply the Act! Update that corresponds to your version of Act!:
|Act! version||Update to apply|
|Act! v19.2||Update 3|
|Act! v19.1||Update 5|
|Act! v19.0||Update 7|
|Act! v18.2||Update 6|
You can download these updates by going to the Act! Download Center
Additionally, while it is not required in order to receive support, it is recommended by both Microsoft and Swiftpage that you set your Microsoft Office Update Channel to Semi-Annual Channel (formerly Deferred Channel (DC)). For more information regarding this recommendation, refer to the following knowledgebase article:
Recommended Microsoft Office update channel settings when using Act! with Office 2016 or Office 365