These errors typically happens when Outlook was shutdown when the Folder HelpDesk client tool was still performing. It can be solved by removing the add-in from the COM Add-ins and then adding it again.
Outlook 2007: Tools > Options > Trust Center > Add-Ins
Outlook 2010, 2013 and 2016: File > Options >Add-Ins
Remove the ‘Folder HelpDesk Client Tool’ entry from the COM Add-ins dialog.
Restart Outlook.
In the COM Add-Ins dialog, click Add. This will prompt you to browse to a DLL.. Browse to Program Files\bizsolutions365.com/staging\FHD Client Tool and select ‘FHelpdeskClientTool.dll’ .
Restart Outlook.