Disable all 3rd party add-ins and see if you continue to see the issue.
- On the Tools menu, click Trust Center, and then click Add-ins.
- In the Add-ins box, identify the add-in that you want to enable or disable and note the Add-in type located in the Type column.
- Select the Add-in type in the Manage box and then click Go.
- Select or clear the check box for the Add-in that you want enable or disable and then click OK.
If you continue to have issues, please don’t hesitate to contact our Support Team.