Hi,
We have MOSS 2007 and we are running lot of out of box workflows and users clicking "Open this task" to approve the workflow, its working for outlook 2007 and outlook 2010 but we are getting below error on outlook 2013 version when clicking Open this task from outlook 2013 version both 32 bit and 64 bit.
Error Message: Outlook cannot open a new form one or more required custom controls in this form cannot be created.
Its a straight out of box no custom control nothing. the same action is working from Outlook 2007 and 2010 versions.
Ratna