After installing Oracle Smart View for Office and launching Excel for the first time, you may get an error message similar to the following: "Unable to set the installed property of the add-in class."
Workarounds: Enable the Smart View Excel add-in using one of the following methods:
Trust Center Method
Perform the task appropriate for your Office version:
2013 and 2010: Go to File, then Options, and then Trust Center.
2007: Click the Office button in the top left corner of Excel, then select Excel Options, and then Trust Center.
Click the Trust Center Settings button.
In the left pane, select Trusted Locations.
Click Add new location to launch the Microsoft Office Trusted Location dialog box.
In Path, enter:
C:\Oracle
Click OK.
Click OK to close the Trust Center, and then click OK to close Excel Options.
COM Add-ins Method:
Perform the task appropriate for your Office version:
2013 and 2010: Go to File, then Options, and then Add-ins.
2007: Click the Office button in the top left corner of Excel, then select Excel Options, and then Add-ins.
From Manage, select COM Add-ins, and then Go.
In COM Add-ins, select the check box to enable the Oracle Smart View for Office add-in, and click OK.